From a0dd6773038f3fd2bd1b4f7ec193887cffc49046 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 23 Nov 2017 11:10:47 +0000 Subject: [PATCH 01/56] phy: tegra: remove redundant self assignment of 'map' The assignment of map to itself is redundant and can be removed. Detected with Coccinelle. Signed-off-by: Colin Ian King Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/tegra/xusb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c index 63e916d4d069..11aa5902a9ac 100644 --- a/drivers/phy/tegra/xusb.c +++ b/drivers/phy/tegra/xusb.c @@ -418,7 +418,7 @@ tegra_xusb_port_find_lane(struct tegra_xusb_port *port, { struct tegra_xusb_lane *lane, *match = ERR_PTR(-ENODEV); - for (map = map; map->type; map++) { + for (; map->type; map++) { if (port->index != map->port) continue; From f3d96f8d23d8e6d0b7642ee946b9b2ac3418fb4d Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Wed, 3 Jan 2018 16:49:44 +0800 Subject: [PATCH 02/56] phy: sun4i-usb: add support for R40 USB PHY Allwinner R40 features a USB PHY like the one in A64, but with 3 PHYs. Add support for it. Signed-off-by: Icenowy Zheng Acked-by: Maxime Ripard Acked-by: Rob Herring Tested-by: Hermann Lauer Signed-off-by: Kishon Vijay Abraham I --- .../devicetree/bindings/phy/sun4i-usb-phy.txt | 1 + drivers/phy/allwinner/phy-sun4i-usb.c | 12 ++++++++++++ 2 files changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt index c1ce5a0a652e..07ca4ec4a745 100644 --- a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt +++ b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt @@ -11,6 +11,7 @@ Required properties: * allwinner,sun8i-a33-usb-phy * allwinner,sun8i-a83t-usb-phy * allwinner,sun8i-h3-usb-phy + * allwinner,sun8i-r40-usb-phy * allwinner,sun8i-v3s-usb-phy * allwinner,sun50i-a64-usb-phy - reg : a list of offset + length pairs diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c index aa857be692cf..bee798892b21 100644 --- a/drivers/phy/allwinner/phy-sun4i-usb.c +++ b/drivers/phy/allwinner/phy-sun4i-usb.c @@ -112,6 +112,7 @@ enum sun4i_usb_phy_type { sun8i_a33_phy, sun8i_a83t_phy, sun8i_h3_phy, + sun8i_r40_phy, sun8i_v3s_phy, sun50i_a64_phy, }; @@ -919,6 +920,16 @@ static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = { .phy0_dual_route = true, }; +static const struct sun4i_usb_phy_cfg sun8i_r40_cfg = { + .num_phys = 3, + .type = sun8i_r40_phy, + .disc_thresh = 3, + .phyctl_offset = REG_PHYCTL_A33, + .dedicated_clocks = true, + .enable_pmu_unk1 = true, + .phy0_dual_route = true, +}; + static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg = { .num_phys = 1, .type = sun8i_v3s_phy, @@ -948,6 +959,7 @@ static const struct of_device_id sun4i_usb_phy_of_match[] = { { .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg }, { .compatible = "allwinner,sun8i-a83t-usb-phy", .data = &sun8i_a83t_cfg }, { .compatible = "allwinner,sun8i-h3-usb-phy", .data = &sun8i_h3_cfg }, + { .compatible = "allwinner,sun8i-r40-usb-phy", .data = &sun8i_r40_cfg }, { .compatible = "allwinner,sun8i-v3s-usb-phy", .data = &sun8i_v3s_cfg }, { .compatible = "allwinner,sun50i-a64-usb-phy", .data = &sun50i_a64_cfg}, From 94ccae556741b3b1e2e526ee41426ed890500cd5 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Wed, 24 Jan 2018 13:47:35 +0800 Subject: [PATCH 03/56] dt-bindings: hisilicon: add doc for Hi3798CV200 peripheral controller It adds bindings doc for Hi3798CV200 peripheral controller. Signed-off-by: Shawn Guo Signed-off-by: Kishon Vijay Abraham I --- .../bindings/arm/hisilicon/hisilicon.txt | 23 +++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt index 7111fbc82a4e..199cd36fe1ba 100644 --- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt @@ -74,6 +74,29 @@ Example: reboot-offset = <0x4>; }; +----------------------------------------------------------------------- +Hisilicon Hi3798CV200 Peripheral Controller + +The Hi3798CV200 Peripheral Controller controls peripherals, queries +their status, and configures some functions of peripherals. + +Required properties: +- compatible: Should contain "hisilicon,hi3798cv200-perictrl", "syscon" + and "simple-mfd". +- reg: Register address and size of Peripheral Controller. +- #address-cells: Should be 1. +- #size-cells: Should be 1. + +Examples: + + perictrl: peripheral-controller@8a20000 { + compatible = "hisilicon,hi3798cv200-perictrl", "syscon", + "simple-mfd"; + reg = <0x8a20000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + }; + ----------------------------------------------------------------------- Hisilicon Hi6220 system controller From 5669f91a086ca377a5f5b15885d03482435006d6 Mon Sep 17 00:00:00 2001 From: Jianguo Sun Date: Wed, 24 Jan 2018 13:47:36 +0800 Subject: [PATCH 04/56] dt-bindings: add bindings doc for hi3798cv200 combphy It adds the device tree bindings for PCIE/SATA/USB3 combo PHY found on HiSilicon STB SoCs. Signed-off-by: Jianguo Sun Signed-off-by: Shawn Guo Acked-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- .../bindings/phy/phy-hi3798cv200-combphy.txt | 59 +++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-hi3798cv200-combphy.txt diff --git a/Documentation/devicetree/bindings/phy/phy-hi3798cv200-combphy.txt b/Documentation/devicetree/bindings/phy/phy-hi3798cv200-combphy.txt new file mode 100644 index 000000000000..17b0c761370a --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-hi3798cv200-combphy.txt @@ -0,0 +1,59 @@ +HiSilicon STB PCIE/SATA/USB3 PHY + +Required properties: +- compatible: Should be "hisilicon,hi3798cv200-combphy" +- reg: Should be the address space for COMBPHY configuration and state + registers in peripheral controller, e.g. PERI_COMBPHY0_CFG and + PERI_COMBPHY0_STATE for COMBPHY0 Hi3798CV200 SoC. +- #phy-cells: Should be 1. The cell number is used to select the phy mode + as defined in . +- clocks: The phandle to clock provider and clock specifier pair. +- resets: The phandle to reset controller and reset specifier pair. + +Refer to phy/phy-bindings.txt for the generic PHY binding properties. + +Optional properties: +- hisilicon,fixed-mode: If the phy device doesn't support mode select + but a fixed mode setting, the property should be present to specify + the particular mode. +- hisilicon,mode-select-bits: If the phy device support mode select, + this property should be present to specify the register bits in + peripheral controller, as a 3 integers tuple: + . + +Notes: +- Between hisilicon,fixed-mode and hisilicon,mode-select-bits, one and only + one of them should be present. +- The device node should be a child of peripheral controller that contains + COMBPHY configuration/state and PERI_CTRL register used to select PHY mode. + Refer to arm/hisilicon/hisilicon.txt for the parent peripheral controller + bindings. + +Examples: + +perictrl: peripheral-controller@8a20000 { + compatible = "hisilicon,hi3798cv200-perictrl", "syscon", + "simple-mfd"; + reg = <0x8a20000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x8a20000 0x1000>; + + combphy0: phy@850 { + compatible = "hisilicon,hi3798cv200-combphy"; + reg = <0x850 0x8>; + #phy-cells = <1>; + clocks = <&crg HISTB_COMBPHY0_CLK>; + resets = <&crg 0x188 4>; + hisilicon,fixed-mode = ; + }; + + combphy1: phy@858 { + compatible = "hisilicon,hi3798cv200-combphy"; + reg = <0x858 0x8>; + #phy-cells = <1>; + clocks = <&crg HISTB_COMBPHY1_CLK>; + resets = <&crg 0x188 12>; + hisilicon,mode-select-bits = <0x0008 11 (0x3 << 11)>; + }; +}; From d0bffd17a3fc49396518591eae42580530aecd25 Mon Sep 17 00:00:00 2001 From: Jianguo Sun Date: Wed, 24 Jan 2018 13:47:37 +0800 Subject: [PATCH 05/56] phy: add combo phy driver for HiSilicon STB SoCs Add combo phy driver for HiSilicon STB SoCs. This phy can be used as pcie-phy, sata-phy or usb-phy. Changes for v5: - Add bindings doc for Hi3798CV200 peripheral controller, and refer to the bindings of this parent node in combphy bindings doc. Changes for v4: - Instead of relying on device id, add a new property hisilicon,fixed-mode for combphy device that doesn't support mode select but a fixed phy mode. - Move combphy mode select register bits definition to device tree, as it may vary from one device to another. Changes for v3: - Make combphy device be child of peripheral controller and use 'reg' property for mapping combphy configuration registers. - Kill "hisilicon,peripheral-syscon" property, since parent node is just the syscon controller now. - Check combphy id to handle the quirk that combphy0 can not configure mode but always works in USB3 mode. - Unify phy .init and .exit hooks for different combphy instances and work modes, as the only quirk we need to handle is that combphy0 can only work in USB3 mode. - Better naming for clock and reset, 'ref' to 'ref_clk', 'por' to 'por_rst'. Changes for v2: - Move DT bindings into a separate patch. - Drop the spurious newline from drivers/phy/Makefile. - Use the phy type defines in dt-bindings/phy/phy.h. - Use PTR_ERR_OR_ZERO() for checking return from devm_of_phy_provider_register(). - Add USB3 phy support. Signed-off-by: Jianguo Sun Signed-off-by: Shawn Guo Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/hisilicon/Kconfig | 9 + drivers/phy/hisilicon/Makefile | 1 + drivers/phy/hisilicon/phy-histb-combphy.c | 289 ++++++++++++++++++++++ 3 files changed, 299 insertions(+) create mode 100644 drivers/phy/hisilicon/phy-histb-combphy.c diff --git a/drivers/phy/hisilicon/Kconfig b/drivers/phy/hisilicon/Kconfig index 6164c4cd0f65..d9afe2b12827 100644 --- a/drivers/phy/hisilicon/Kconfig +++ b/drivers/phy/hisilicon/Kconfig @@ -11,6 +11,15 @@ config PHY_HI6220_USB To compile this driver as a module, choose M here. +config PHY_HISTB_COMBPHY + tristate "HiSilicon STB SoCs COMBPHY support" + depends on (ARCH_HISI && ARM64) || COMPILE_TEST + select GENERIC_PHY + select MFD_SYSCON + help + Enable this to support the HISILICON STB SoCs COMBPHY. + If unsure, say N. + config PHY_HIX5HD2_SATA tristate "HIX5HD2 SATA PHY Driver" depends on ARCH_HIX5HD2 && OF && HAS_IOMEM diff --git a/drivers/phy/hisilicon/Makefile b/drivers/phy/hisilicon/Makefile index 541b348187a8..5e8e2dfa8c37 100644 --- a/drivers/phy/hisilicon/Makefile +++ b/drivers/phy/hisilicon/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_PHY_HI6220_USB) += phy-hi6220-usb.o +obj-$(CONFIG_PHY_HISTB_COMBPHY) += phy-histb-combphy.o obj-$(CONFIG_PHY_HIX5HD2_SATA) += phy-hix5hd2-sata.o diff --git a/drivers/phy/hisilicon/phy-histb-combphy.c b/drivers/phy/hisilicon/phy-histb-combphy.c new file mode 100644 index 000000000000..5777b3120017 --- /dev/null +++ b/drivers/phy/hisilicon/phy-histb-combphy.c @@ -0,0 +1,289 @@ +/* + * COMBPHY driver for HiSilicon STB SoCs + * + * Copyright (C) 2016-2017 HiSilicon Co., Ltd. http://www.hisilicon.com + * + * Authors: Jianguo Sun + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define COMBPHY_MODE_PCIE 0 +#define COMBPHY_MODE_USB3 1 +#define COMBPHY_MODE_SATA 2 + +#define COMBPHY_CFG_REG 0x0 +#define COMBPHY_BYPASS_CODEC BIT(31) +#define COMBPHY_TEST_WRITE BIT(24) +#define COMBPHY_TEST_DATA_SHIFT 20 +#define COMBPHY_TEST_DATA_MASK GENMASK(23, 20) +#define COMBPHY_TEST_ADDR_SHIFT 12 +#define COMBPHY_TEST_ADDR_MASK GENMASK(16, 12) +#define COMBPHY_CLKREF_OUT_OEN BIT(0) + +struct histb_combphy_mode { + int fixed; + int select; + u32 reg; + u32 shift; + u32 mask; +}; + +struct histb_combphy_priv { + void __iomem *mmio; + struct regmap *syscon; + struct reset_control *por_rst; + struct clk *ref_clk; + struct phy *phy; + struct histb_combphy_mode mode; +}; + +static void nano_register_write(struct histb_combphy_priv *priv, + u32 addr, u32 data) +{ + void __iomem *reg = priv->mmio + COMBPHY_CFG_REG; + u32 val; + + /* Set up address and data for the write */ + val = readl(reg); + val &= ~COMBPHY_TEST_ADDR_MASK; + val |= addr << COMBPHY_TEST_ADDR_SHIFT; + val &= ~COMBPHY_TEST_DATA_MASK; + val |= data << COMBPHY_TEST_DATA_SHIFT; + writel(val, reg); + + /* Flip strobe control to trigger the write */ + val &= ~COMBPHY_TEST_WRITE; + writel(val, reg); + val |= COMBPHY_TEST_WRITE; + writel(val, reg); +} + +static int is_mode_fixed(struct histb_combphy_mode *mode) +{ + return (mode->fixed != PHY_NONE) ? true : false; +} + +static int histb_combphy_set_mode(struct histb_combphy_priv *priv) +{ + struct histb_combphy_mode *mode = &priv->mode; + struct regmap *syscon = priv->syscon; + u32 hw_sel; + + if (is_mode_fixed(mode)) + return 0; + + switch (mode->select) { + case PHY_TYPE_SATA: + hw_sel = COMBPHY_MODE_SATA; + break; + case PHY_TYPE_PCIE: + hw_sel = COMBPHY_MODE_PCIE; + break; + case PHY_TYPE_USB3: + hw_sel = COMBPHY_MODE_USB3; + break; + default: + return -EINVAL; + } + + return regmap_update_bits(syscon, mode->reg, mode->mask, + hw_sel << mode->shift); +} + +static int histb_combphy_init(struct phy *phy) +{ + struct histb_combphy_priv *priv = phy_get_drvdata(phy); + u32 val; + int ret; + + ret = histb_combphy_set_mode(priv); + if (ret) + return ret; + + /* Clear bypass bit to enable encoding/decoding */ + val = readl(priv->mmio + COMBPHY_CFG_REG); + val &= ~COMBPHY_BYPASS_CODEC; + writel(val, priv->mmio + COMBPHY_CFG_REG); + + ret = clk_prepare_enable(priv->ref_clk); + if (ret) + return ret; + + reset_control_deassert(priv->por_rst); + + /* Enable EP clock */ + val = readl(priv->mmio + COMBPHY_CFG_REG); + val |= COMBPHY_CLKREF_OUT_OEN; + writel(val, priv->mmio + COMBPHY_CFG_REG); + + /* Need to wait for EP clock stable */ + mdelay(5); + + /* Configure nano phy registers as suggested by vendor */ + nano_register_write(priv, 0x1, 0x8); + nano_register_write(priv, 0xc, 0x9); + nano_register_write(priv, 0x1a, 0x4); + + return 0; +} + +static int histb_combphy_exit(struct phy *phy) +{ + struct histb_combphy_priv *priv = phy_get_drvdata(phy); + u32 val; + + /* Disable EP clock */ + val = readl(priv->mmio + COMBPHY_CFG_REG); + val &= ~COMBPHY_CLKREF_OUT_OEN; + writel(val, priv->mmio + COMBPHY_CFG_REG); + + reset_control_assert(priv->por_rst); + clk_disable_unprepare(priv->ref_clk); + + return 0; +} + +static const struct phy_ops histb_combphy_ops = { + .init = histb_combphy_init, + .exit = histb_combphy_exit, + .owner = THIS_MODULE, +}; + +static struct phy *histb_combphy_xlate(struct device *dev, + struct of_phandle_args *args) +{ + struct histb_combphy_priv *priv = dev_get_drvdata(dev); + struct histb_combphy_mode *mode = &priv->mode; + + if (args->args_count < 1) { + dev_err(dev, "invalid number of arguments\n"); + return ERR_PTR(-EINVAL); + } + + mode->select = args->args[0]; + + if (mode->select < PHY_TYPE_SATA || mode->select > PHY_TYPE_USB3) { + dev_err(dev, "invalid phy mode select argument\n"); + return ERR_PTR(-EINVAL); + } + + if (is_mode_fixed(mode) && mode->select != mode->fixed) { + dev_err(dev, "mode select %d mismatch fixed phy mode %d\n", + mode->select, mode->fixed); + return ERR_PTR(-EINVAL); + } + + return priv->phy; +} + +static int histb_combphy_probe(struct platform_device *pdev) +{ + struct phy_provider *phy_provider; + struct device *dev = &pdev->dev; + struct histb_combphy_priv *priv; + struct device_node *np = dev->of_node; + struct histb_combphy_mode *mode; + struct resource *res; + u32 vals[3]; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->mmio = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->mmio)) { + ret = PTR_ERR(priv->mmio); + return ret; + } + + priv->syscon = syscon_node_to_regmap(np->parent); + if (IS_ERR(priv->syscon)) { + dev_err(dev, "failed to find peri_ctrl syscon regmap\n"); + return PTR_ERR(priv->syscon); + } + + mode = &priv->mode; + mode->fixed = PHY_NONE; + + ret = of_property_read_u32(np, "hisilicon,fixed-mode", &mode->fixed); + if (ret == 0) + dev_dbg(dev, "found fixed phy mode %d\n", mode->fixed); + + ret = of_property_read_u32_array(np, "hisilicon,mode-select-bits", + vals, ARRAY_SIZE(vals)); + if (ret == 0) { + if (is_mode_fixed(mode)) { + dev_err(dev, "found select bits for fixed mode phy\n"); + return -EINVAL; + } + + mode->reg = vals[0]; + mode->shift = vals[1]; + mode->mask = vals[2]; + dev_dbg(dev, "found mode select bits\n"); + } else { + if (!is_mode_fixed(mode)) { + dev_err(dev, "no valid select bits found for non-fixed phy\n"); + return -ENODEV; + } + } + + priv->ref_clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->ref_clk)) { + dev_err(dev, "failed to find ref clock\n"); + return PTR_ERR(priv->ref_clk); + } + + priv->por_rst = devm_reset_control_get(dev, NULL); + if (IS_ERR(priv->por_rst)) { + dev_err(dev, "failed to get poweron reset\n"); + return PTR_ERR(priv->por_rst); + } + + priv->phy = devm_phy_create(dev, NULL, &histb_combphy_ops); + if (IS_ERR(priv->phy)) { + dev_err(dev, "failed to create combphy\n"); + return PTR_ERR(priv->phy); + } + + dev_set_drvdata(dev, priv); + phy_set_drvdata(priv->phy, priv); + + phy_provider = devm_of_phy_provider_register(dev, histb_combphy_xlate); + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct of_device_id histb_combphy_of_match[] = { + { .compatible = "hisilicon,hi3798cv200-combphy" }, + { }, +}; +MODULE_DEVICE_TABLE(of, histb_combphy_of_match); + +static struct platform_driver histb_combphy_driver = { + .probe = histb_combphy_probe, + .driver = { + .name = "combphy", + .of_match_table = histb_combphy_of_match, + }, +}; +module_platform_driver(histb_combphy_driver); + +MODULE_DESCRIPTION("HiSilicon STB COMBPHY driver"); +MODULE_LICENSE("GPL v2"); From f8ba22a39e985c93e278709b1d5f20857a26b49b Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 16 Jan 2018 16:26:56 +0530 Subject: [PATCH 06/56] phy: qcom-qmp: Fix phy pipe clock gating Pipe clock comes out of the phy and is available as long as the phy is turned on. Clock controller fails to gate this clock after the phy is turned off and generates a warning. / # [ 33.048561] gcc_usb3_phy_pipe_clk status stuck at 'on' [ 33.048585] ------------[ cut here ]------------ [ 33.052621] WARNING: CPU: 1 PID: 18 at ../drivers/clk/qcom/clk-branch.c:97 clk_branch_wait+0xf0/0x108 [ 33.057384] Modules linked in: [ 33.066497] CPU: 1 PID: 18 Comm: kworker/1:0 Tainted: G W 4.12.0-rc7-00024-gfe926e34c36d-dirty #96 [ 33.069451] Hardware name: Qualcomm Technologies, Inc. DB820c (DT) ... [ 33.278565] [] clk_branch_wait+0xf0/0x108 [ 33.286375] [] clk_branch2_disable+0x28/0x34 [ 33.291761] [] clk_core_disable+0x5c/0x88 [ 33.297660] [] clk_core_disable_lock+0x20/0x34 [ 33.303129] [] clk_disable+0x1c/0x24 [ 33.309384] [] qcom_qmp_phy_poweroff+0x20/0x48 [ 33.314328] [] phy_power_off+0x80/0xdc [ 33.320492] [] dwc3_core_exit+0x94/0xa0 [ 33.325784] [] dwc3_suspend_common+0x50/0x60 [ 33.331080] [] dwc3_runtime_suspend+0x48/0x6c [ 33.336810] [] pm_generic_runtime_suspend+0x28/0x38 [ 33.342627] [] __rpm_callback+0x150/0x254 [ 33.349222] [] rpm_callback+0x24/0x78 [ 33.354604] [] rpm_suspend+0xe0/0x4e4 [ 33.359813] [] pm_runtime_work+0xdc/0xf0 [ 33.365028] [] process_one_work+0x12c/0x28c [ 33.370576] [] worker_thread+0x58/0x3b8 [ 33.376393] [] kthread+0x100/0x12c [ 33.381776] [] ret_from_fork+0x10/0x50 Fix this by disabling it as the first thing in phy_exit(). Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets") Signed-off-by: Vivek Gautam Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index e17f0351ccc2..2526971f9929 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -751,8 +751,6 @@ static int qcom_qmp_phy_poweroff(struct phy *phy) struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; - clk_disable_unprepare(qphy->pipe_clk); - regulator_bulk_disable(qmp->cfg->num_vregs, qmp->vregs); return 0; @@ -936,6 +934,8 @@ static int qcom_qmp_phy_exit(struct phy *phy) const struct qmp_phy_cfg *cfg = qmp->cfg; int i = cfg->num_clks; + clk_disable_unprepare(qphy->pipe_clk); + /* PHY reset */ qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); From 10939b10741d2f022d5fc01915b264160395f32e Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 16 Jan 2018 16:26:57 +0530 Subject: [PATCH 07/56] phy: qcom-qmp: Adapt to clk_bulk_* APIs Move from using array of clocks to clk_bulk_* APIs that are available now. Signed-off-by: Vivek Gautam Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 50 +++++++++-------------------- 1 file changed, 16 insertions(+), 34 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 2526971f9929..5fed1aed019c 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -555,7 +555,7 @@ struct qcom_qmp { struct device *dev; void __iomem *serdes; - struct clk **clks; + struct clk_bulk_data *clks; struct reset_control **resets; struct regulator_bulk_data *vregs; @@ -857,22 +857,19 @@ static int qcom_qmp_phy_init(struct phy *phy) void __iomem *pcs = qphy->pcs; void __iomem *status; unsigned int mask, val; - int ret, i; + int ret; dev_vdbg(qmp->dev, "Initializing QMP phy\n"); - for (i = 0; i < qmp->cfg->num_clks; i++) { - ret = clk_prepare_enable(qmp->clks[i]); - if (ret) { - dev_err(qmp->dev, "failed to enable %s clk, err=%d\n", - qmp->cfg->clk_list[i], ret); - goto err_clk; - } + ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); + if (ret) { + dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); + return ret; } ret = qcom_qmp_phy_com_init(qmp); if (ret) - goto err_clk; + goto err_com_init; if (cfg->has_lane_rst) { ret = reset_control_deassert(qphy->lane_rst); @@ -920,9 +917,8 @@ static int qcom_qmp_phy_init(struct phy *phy) reset_control_assert(qphy->lane_rst); err_lane_rst: qcom_qmp_phy_com_exit(qmp); -err_clk: - while (--i >= 0) - clk_disable_unprepare(qmp->clks[i]); +err_com_init: + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); return ret; } @@ -932,7 +928,6 @@ static int qcom_qmp_phy_exit(struct phy *phy) struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; const struct qmp_phy_cfg *cfg = qmp->cfg; - int i = cfg->num_clks; clk_disable_unprepare(qphy->pipe_clk); @@ -950,8 +945,7 @@ static int qcom_qmp_phy_exit(struct phy *phy) qcom_qmp_phy_com_exit(qmp); - while (--i >= 0) - clk_disable_unprepare(qmp->clks[i]); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); return 0; } @@ -1000,29 +994,17 @@ static int qcom_qmp_phy_reset_init(struct device *dev) static int qcom_qmp_phy_clk_init(struct device *dev) { struct qcom_qmp *qmp = dev_get_drvdata(dev); - int ret, i; + int num = qmp->cfg->num_clks; + int i; - qmp->clks = devm_kcalloc(dev, qmp->cfg->num_clks, - sizeof(*qmp->clks), GFP_KERNEL); + qmp->clks = devm_kcalloc(dev, num, sizeof(*qmp->clks), GFP_KERNEL); if (!qmp->clks) return -ENOMEM; - for (i = 0; i < qmp->cfg->num_clks; i++) { - struct clk *_clk; - const char *name = qmp->cfg->clk_list[i]; + for (i = 0; i < num; i++) + qmp->clks[i].id = qmp->cfg->clk_list[i]; - _clk = devm_clk_get(dev, name); - if (IS_ERR(_clk)) { - ret = PTR_ERR(_clk); - if (ret != -EPROBE_DEFER) - dev_err(dev, "failed to get %s clk, %d\n", - name, ret); - return ret; - } - qmp->clks[i] = _clk; - } - - return 0; + return devm_clk_bulk_get(dev, num, qmp->clks); } /* From 717dab9d670eb0015c40f91e105c89537abd5f6a Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:26:58 +0530 Subject: [PATCH 08/56] phy: qcom-qmp: Power-on PHY before initialization PHY regulators which are enabled from power_on() must be ON before turning-on clocks and initializing it as part of init(). As most of the core drivers perform power_on() after init(), move PHY regulators enable to com_init() and use power_on() to only enable pipe_clk. This pipe_clk is output from PHY and some core drivers e.g. PCIe follow specific sequence after phy_init() that mandates pipe_clk to be enabled from power_on() only. On similar lines move clk_enable from init() to com_init() which executes once for multi lane PHYs. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 61 ++++++++++++----------------- 1 file changed, 24 insertions(+), 37 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 5fed1aed019c..1b82cea7a79b 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -724,36 +724,13 @@ static int qcom_qmp_phy_poweron(struct phy *phy) { struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; - int num = qmp->cfg->num_vregs; int ret; - dev_vdbg(&phy->dev, "Powering on QMP phy\n"); - - /* turn on regulator supplies */ - ret = regulator_bulk_enable(num, qmp->vregs); - if (ret) { - dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret); - return ret; - } - ret = clk_prepare_enable(qphy->pipe_clk); - if (ret) { + if (ret) dev_err(qmp->dev, "pipe_clk enable failed, err=%d\n", ret); - regulator_bulk_disable(num, qmp->vregs); - return ret; - } - return 0; -} - -static int qcom_qmp_phy_poweroff(struct phy *phy) -{ - struct qmp_phy *qphy = phy_get_drvdata(phy); - struct qcom_qmp *qmp = qphy->qmp; - - regulator_bulk_disable(qmp->cfg->num_vregs, qmp->vregs); - - return 0; + return ret; } static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) @@ -768,6 +745,19 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) return 0; } + /* turn on regulator supplies */ + ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs); + if (ret) { + dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret); + goto err_reg_enable; + } + + ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); + if (ret) { + dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); + goto err_clk_enable; + } + for (i = 0; i < cfg->num_resets; i++) { ret = reset_control_deassert(qmp->resets[i]); if (ret) { @@ -812,6 +802,10 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) err_rst: while (--i >= 0) reset_control_assert(qmp->resets[i]); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); +err_clk_enable: + regulator_bulk_disable(cfg->num_vregs, qmp->vregs); +err_reg_enable: mutex_unlock(&qmp->phy_mutex); return ret; @@ -841,6 +835,10 @@ static int qcom_qmp_phy_com_exit(struct qcom_qmp *qmp) while (--i >= 0) reset_control_assert(qmp->resets[i]); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); + + regulator_bulk_disable(cfg->num_vregs, qmp->vregs); + mutex_unlock(&qmp->phy_mutex); return 0; @@ -861,15 +859,9 @@ static int qcom_qmp_phy_init(struct phy *phy) dev_vdbg(qmp->dev, "Initializing QMP phy\n"); - ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); - if (ret) { - dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); - return ret; - } - ret = qcom_qmp_phy_com_init(qmp); if (ret) - goto err_com_init; + return ret; if (cfg->has_lane_rst) { ret = reset_control_deassert(qphy->lane_rst); @@ -917,8 +909,6 @@ static int qcom_qmp_phy_init(struct phy *phy) reset_control_assert(qphy->lane_rst); err_lane_rst: qcom_qmp_phy_com_exit(qmp); -err_com_init: - clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); return ret; } @@ -945,8 +935,6 @@ static int qcom_qmp_phy_exit(struct phy *phy) qcom_qmp_phy_com_exit(qmp); - clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); - return 0; } @@ -1060,7 +1048,6 @@ static const struct phy_ops qcom_qmp_phy_gen_ops = { .init = qcom_qmp_phy_init, .exit = qcom_qmp_phy_exit, .power_on = qcom_qmp_phy_poweron, - .power_off = qcom_qmp_phy_poweroff, .owner = THIS_MODULE, }; From 937e17f36a32fc2ec01b9f99bac5b80acf22923c Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:26:59 +0530 Subject: [PATCH 09/56] phy: qcom-qusb2: Power-on PHY before initialization PHY must be powered on before turning ON clocks and attempting to initialize it. Driver is exposing separate init and power_on routines for this. Apparently USB dwc3 core driver performs power-on after init. Also, poweron and init for QUSB2 PHY need to be executed together always, hence remove poweron callback from phy_ops and explicitly perform this from init, similar changes needed for poweroff. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qusb2.c | 57 ++++++++++----------------- 1 file changed, 20 insertions(+), 37 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index 6c575244c0fb..4a5b2a1d2bba 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -195,40 +195,6 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) qusb2_setbits(qphy->base, QUSB2PHY_PORT_TUNE2, val[0] << 0x4); } -static int qusb2_phy_poweron(struct phy *phy) -{ - struct qusb2_phy *qphy = phy_get_drvdata(phy); - int num = ARRAY_SIZE(qphy->vregs); - int ret; - - dev_vdbg(&phy->dev, "%s(): Powering-on QUSB2 phy\n", __func__); - - /* turn on regulator supplies */ - ret = regulator_bulk_enable(num, qphy->vregs); - if (ret) - return ret; - - ret = clk_prepare_enable(qphy->iface_clk); - if (ret) { - dev_err(&phy->dev, "failed to enable iface_clk, %d\n", ret); - regulator_bulk_disable(num, qphy->vregs); - return ret; - } - - return 0; -} - -static int qusb2_phy_poweroff(struct phy *phy) -{ - struct qusb2_phy *qphy = phy_get_drvdata(phy); - - clk_disable_unprepare(qphy->iface_clk); - - regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs); - - return 0; -} - static int qusb2_phy_init(struct phy *phy) { struct qusb2_phy *qphy = phy_get_drvdata(phy); @@ -238,11 +204,22 @@ static int qusb2_phy_init(struct phy *phy) dev_vdbg(&phy->dev, "%s(): Initializing QUSB2 phy\n", __func__); + /* turn on regulator supplies */ + ret = regulator_bulk_enable(ARRAY_SIZE(qphy->vregs), qphy->vregs); + if (ret) + return ret; + + ret = clk_prepare_enable(qphy->iface_clk); + if (ret) { + dev_err(&phy->dev, "failed to enable iface_clk, %d\n", ret); + goto poweroff_phy; + } + /* enable ahb interface clock to program phy */ ret = clk_prepare_enable(qphy->cfg_ahb_clk); if (ret) { dev_err(&phy->dev, "failed to enable cfg ahb clock, %d\n", ret); - return ret; + goto disable_iface_clk; } /* Perform phy reset */ @@ -344,6 +321,11 @@ static int qusb2_phy_init(struct phy *phy) reset_control_assert(qphy->phy_reset); disable_ahb_clk: clk_disable_unprepare(qphy->cfg_ahb_clk); +disable_iface_clk: + clk_disable_unprepare(qphy->iface_clk); +poweroff_phy: + regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs); + return ret; } @@ -361,6 +343,9 @@ static int qusb2_phy_exit(struct phy *phy) reset_control_assert(qphy->phy_reset); clk_disable_unprepare(qphy->cfg_ahb_clk); + clk_disable_unprepare(qphy->iface_clk); + + regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs); return 0; } @@ -368,8 +353,6 @@ static int qusb2_phy_exit(struct phy *phy) static const struct phy_ops qusb2_phy_gen_ops = { .init = qusb2_phy_init, .exit = qusb2_phy_exit, - .power_on = qusb2_phy_poweron, - .power_off = qusb2_phy_poweroff, .owner = THIS_MODULE, }; From c6549f0eefc4d492954af11421d359265c155a91 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:00 +0530 Subject: [PATCH 10/56] phy: qcom-qmp: Fix PHY block reset sequence PHY block or asynchronous reset requires signal to be asserted before de-asserting. Driver is only de-asserting signal which is already low, hence reset operation is a no-op. Fix this by asserting signal first. Also, resetting requires PHY clocks to be turned ON only after reset is finished. Fix that as well. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 30 +++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 1b82cea7a79b..ecff2616dc84 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -752,13 +752,16 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) goto err_reg_enable; } - ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); - if (ret) { - dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); - goto err_clk_enable; + for (i = 0; i < cfg->num_resets; i++) { + ret = reset_control_assert(qmp->resets[i]); + if (ret) { + dev_err(qmp->dev, "%s reset assert failed\n", + cfg->reset_list[i]); + goto err_rst_assert; + } } - for (i = 0; i < cfg->num_resets; i++) { + for (i = cfg->num_resets - 1; i >= 0; i--) { ret = reset_control_deassert(qmp->resets[i]); if (ret) { dev_err(qmp->dev, "%s reset deassert failed\n", @@ -767,6 +770,12 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) } } + ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); + if (ret) { + dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); + goto err_rst; + } + if (cfg->has_phy_com_ctrl) qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL], SW_PWRDN); @@ -791,7 +800,7 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) if (ret) { dev_err(qmp->dev, "phy common block init timed-out\n"); - goto err_rst; + goto err_com_init; } } @@ -799,11 +808,12 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) return 0; -err_rst: - while (--i >= 0) - reset_control_assert(qmp->resets[i]); +err_com_init: clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); -err_clk_enable: +err_rst: + while (++i < cfg->num_resets) + reset_control_assert(qmp->resets[i]); +err_rst_assert: regulator_bulk_disable(cfg->num_vregs, qmp->vregs); err_reg_enable: mutex_unlock(&qmp->phy_mutex); From 76ddd300892a7e7c957c3ce0db5958c1c4866139 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:01 +0530 Subject: [PATCH 11/56] phy: qcom-qmp: Move SERDES/PCS START after PHY reset Driver is currently performing PHY reset after starting SERDES/PCS. As per hardware datasheet reset must be done before starting PHY. Hence, update the sequence. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index ecff2616dc84..edb6bbe95558 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -896,12 +896,12 @@ static int qcom_qmp_phy_init(struct phy *phy) if (cfg->has_pwrdn_delay) usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max); - /* start SerDes and Phy-Coding-Sublayer */ - qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); - /* Pull PHY out of reset state */ qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); + /* start SerDes and Phy-Coding-Sublayer */ + qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); + status = pcs + cfg->regs[QPHY_PCS_READY_STATUS]; mask = cfg->mask_pcs_ready; From c71dabf27c3ac124c87a96681e4df5d49ea59dc4 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:02 +0530 Subject: [PATCH 12/56] phy: qcom-qusb2: Add support for different register layouts New version of QUSB2 PHY has some registers offset changed. Add support to have register layout for a target and update the same in phy_configuration. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qusb2.c | 149 +++++++++++++++++++------- 1 file changed, 109 insertions(+), 40 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index 4a5b2a1d2bba..b65635fba0e7 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -37,17 +37,10 @@ #define QUSB2PHY_PLL_AUTOPGM_CTL1 0x1c #define QUSB2PHY_PLL_PWR_CTRL 0x18 -#define QUSB2PHY_PLL_STATUS 0x38 +/* QUSB2PHY_PLL_STATUS register bits */ #define PLL_LOCKED BIT(5) -#define QUSB2PHY_PORT_TUNE1 0x80 -#define QUSB2PHY_PORT_TUNE2 0x84 -#define QUSB2PHY_PORT_TUNE3 0x88 -#define QUSB2PHY_PORT_TUNE4 0x8c -#define QUSB2PHY_PORT_TUNE5 0x90 -#define QUSB2PHY_PORT_TEST2 0x9c - -#define QUSB2PHY_PORT_POWERDOWN 0xb4 +/* QUSB2PHY_PORT_POWERDOWN register bits */ #define CLAMP_N_EN BIT(5) #define FREEZIO_N BIT(1) #define POWER_DOWN BIT(0) @@ -59,6 +52,11 @@ struct qusb2_phy_init_tbl { unsigned int offset; unsigned int val; + /* + * register part of layout ? + * if yes, then offset gives index in the reg-layout + */ + int in_layout; }; #define QUSB2_PHY_INIT_CFG(o, v) \ @@ -67,15 +65,50 @@ struct qusb2_phy_init_tbl { .val = v, \ } +#define QUSB2_PHY_INIT_CFG_L(o, v) \ + { \ + .offset = o, \ + .val = v, \ + .in_layout = 1, \ + } + +/* set of registers with offsets different per-PHY */ +enum qusb2phy_reg_layout { + QUSB2PHY_PLL_STATUS, + QUSB2PHY_PORT_TUNE1, + QUSB2PHY_PORT_TUNE2, + QUSB2PHY_PORT_TUNE3, + QUSB2PHY_PORT_TUNE4, + QUSB2PHY_PORT_TUNE5, + QUSB2PHY_PORT_TEST1, + QUSB2PHY_PORT_TEST2, + QUSB2PHY_PORT_POWERDOWN, + QUSB2PHY_INTR_CTRL, +}; + +static const unsigned int msm8996_regs_layout[] = { + [QUSB2PHY_PLL_STATUS] = 0x38, + [QUSB2PHY_PORT_TUNE1] = 0x80, + [QUSB2PHY_PORT_TUNE2] = 0x84, + [QUSB2PHY_PORT_TUNE3] = 0x88, + [QUSB2PHY_PORT_TUNE4] = 0x8c, + [QUSB2PHY_PORT_TUNE5] = 0x90, + [QUSB2PHY_PORT_TEST2] = 0x9c, + [QUSB2PHY_PORT_POWERDOWN] = 0xb4, +}; + static const struct qusb2_phy_init_tbl msm8996_init_tbl[] = { - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE1, 0xf8), - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE2, 0xb3), - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE3, 0x83), - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE4, 0xc0), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE1, 0xf8), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE2, 0xb3), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE3, 0x83), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE4, 0xc0), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_TUNE, 0x30), QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_USER_CTL1, 0x79), QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_USER_CTL2, 0x21), - QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TEST2, 0x14), + + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TEST2, 0x14), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_AUTOPGM_CTL1, 0x9f), QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_PWR_CTRL, 0x00), }; @@ -86,11 +119,27 @@ struct qusb2_phy_cfg { unsigned int tbl_num; /* offset to PHY_CLK_SCHEME register in TCSR map */ unsigned int clk_scheme_offset; + + /* array of registers with different offsets */ + const unsigned int *regs; + unsigned int mask_core_ready; + unsigned int disable_ctrl; + + /* true if PHY has PLL_TEST register to select clk_scheme */ + bool has_pll_test; + + /* true if TUNE1 register must be updated by fused value, else TUNE2 */ + bool update_tune1_with_efuse; }; static const struct qusb2_phy_cfg msm8996_phy_cfg = { - .tbl = msm8996_init_tbl, - .tbl_num = ARRAY_SIZE(msm8996_init_tbl), + .tbl = msm8996_init_tbl, + .tbl_num = ARRAY_SIZE(msm8996_init_tbl), + .regs = msm8996_regs_layout, + + .has_pll_test = true, + .disable_ctrl = (CLAMP_N_EN | FREEZIO_N | POWER_DOWN), + .mask_core_ready = PLL_LOCKED, }; static const char * const qusb2_phy_vreg_names[] = { @@ -160,26 +209,32 @@ static inline void qusb2_clrbits(void __iomem *base, u32 offset, u32 val) static inline void qcom_qusb2_phy_configure(void __iomem *base, + const unsigned int *regs, const struct qusb2_phy_init_tbl tbl[], int num) { int i; - for (i = 0; i < num; i++) - writel(tbl[i].val, base + tbl[i].offset); + for (i = 0; i < num; i++) { + if (tbl[i].in_layout) + writel(tbl[i].val, base + regs[tbl[i].offset]); + else + writel(tbl[i].val, base + tbl[i].offset); + } } /* * Fetches HS Tx tuning value from nvmem and sets the - * QUSB2PHY_PORT_TUNE2 register. + * QUSB2PHY_PORT_TUNE1/2 register. * For error case, skip setting the value and use the default value. */ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) { struct device *dev = &qphy->phy->dev; + const struct qusb2_phy_cfg *cfg = qphy->cfg; u8 *val; /* - * Read efuse register having TUNE2 parameter's high nibble. + * Read efuse register having TUNE2/1 parameter's high nibble. * If efuse register shows value as 0x0, or if we fail to find * a valid efuse register settings, then use default value * as 0xB for high nibble that we have already set while @@ -191,14 +246,21 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) return; } - /* Fused TUNE2 value is the higher nibble only */ - qusb2_setbits(qphy->base, QUSB2PHY_PORT_TUNE2, val[0] << 0x4); + /* Fused TUNE1/2 value is the higher nibble only */ + if (cfg->update_tune1_with_efuse) + qusb2_setbits(qphy->base, cfg->regs[QUSB2PHY_PORT_TUNE1], + val[0] << 0x4); + else + qusb2_setbits(qphy->base, cfg->regs[QUSB2PHY_PORT_TUNE2], + val[0] << 0x4); + } static int qusb2_phy_init(struct phy *phy) { struct qusb2_phy *qphy = phy_get_drvdata(phy); - unsigned int val; + const struct qusb2_phy_cfg *cfg = qphy->cfg; + unsigned int val = 0; unsigned int clk_scheme; int ret; @@ -239,20 +301,23 @@ static int qusb2_phy_init(struct phy *phy) } /* Disable the PHY */ - qusb2_setbits(qphy->base, QUSB2PHY_PORT_POWERDOWN, - CLAMP_N_EN | FREEZIO_N | POWER_DOWN); + qusb2_setbits(qphy->base, cfg->regs[QUSB2PHY_PORT_POWERDOWN], + qphy->cfg->disable_ctrl); - /* save reset value to override reference clock scheme later */ - val = readl(qphy->base + QUSB2PHY_PLL_TEST); + if (cfg->has_pll_test) { + /* save reset value to override reference clock scheme later */ + val = readl(qphy->base + QUSB2PHY_PLL_TEST); + } - qcom_qusb2_phy_configure(qphy->base, qphy->cfg->tbl, - qphy->cfg->tbl_num); + qcom_qusb2_phy_configure(qphy->base, cfg->regs, cfg->tbl, + cfg->tbl_num); /* Set efuse value for tuning the PHY */ qusb2_phy_set_tune2_param(qphy); /* Enable the PHY */ - qusb2_clrbits(qphy->base, QUSB2PHY_PORT_POWERDOWN, POWER_DOWN); + qusb2_clrbits(qphy->base, cfg->regs[QUSB2PHY_PORT_POWERDOWN], + POWER_DOWN); /* Required to get phy pll lock successfully */ usleep_range(150, 160); @@ -285,27 +350,31 @@ static int qusb2_phy_init(struct phy *phy) } if (!qphy->has_se_clk_scheme) { - val &= ~CLK_REF_SEL; ret = clk_prepare_enable(qphy->ref_clk); if (ret) { dev_err(&phy->dev, "failed to enable ref clk, %d\n", ret); goto assert_phy_reset; } - } else { - val |= CLK_REF_SEL; } - writel(val, qphy->base + QUSB2PHY_PLL_TEST); + if (cfg->has_pll_test) { + if (!qphy->has_se_clk_scheme) + val &= ~CLK_REF_SEL; + else + val |= CLK_REF_SEL; - /* ensure above write is through */ - readl(qphy->base + QUSB2PHY_PLL_TEST); + writel(val, qphy->base + QUSB2PHY_PLL_TEST); + + /* ensure above write is through */ + readl(qphy->base + QUSB2PHY_PLL_TEST); + } /* Required to get phy pll lock successfully */ usleep_range(100, 110); - val = readb(qphy->base + QUSB2PHY_PLL_STATUS); - if (!(val & PLL_LOCKED)) { + val = readb(qphy->base + cfg->regs[QUSB2PHY_PLL_STATUS]); + if (!(val & cfg->mask_core_ready)) { dev_err(&phy->dev, "QUSB2PHY pll lock failed: status reg = %x\n", val); ret = -EBUSY; @@ -334,8 +403,8 @@ static int qusb2_phy_exit(struct phy *phy) struct qusb2_phy *qphy = phy_get_drvdata(phy); /* Disable the PHY */ - qusb2_setbits(qphy->base, QUSB2PHY_PORT_POWERDOWN, - CLAMP_N_EN | FREEZIO_N | POWER_DOWN); + qusb2_setbits(qphy->base, qphy->cfg->regs[QUSB2PHY_PORT_POWERDOWN], + qphy->cfg->disable_ctrl); if (!qphy->has_se_clk_scheme) clk_disable_unprepare(qphy->ref_clk); From ecf66ac2a06b16c7de00361c659b123b541e5f6a Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:03 +0530 Subject: [PATCH 13/56] dt-bindings: phy-qcom-qusb2: Update binding for QUSB2 V2 version Update generic compatible string for QUSB2 V2 PHY. This will allow all targets using QUSB2 V2 use same string. Acked-by: Rob Herring Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt index aa0fcb05acb3..42c97426836e 100644 --- a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt +++ b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt @@ -4,7 +4,10 @@ Qualcomm QUSB2 phy controller QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets. Required properties: - - compatible: compatible list, contains "qcom,msm8996-qusb2-phy". + - compatible: compatible list, contains + "qcom,msm8996-qusb2-phy" for 14nm PHY on msm8996, + "qcom,qusb2-v2-phy" for QUSB2 V2 PHY. + - reg: offset and length of the PHY register set. - #phy-cells: must be 0. From 4a705d9b3ea0947ac1e9c55830f72aaf65c17027 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:04 +0530 Subject: [PATCH 14/56] phy: qcom-qusb2: Add support for QUSB2 V2 version Use register layout to add additional registers present on QUSB2 PHY V2 version for PHY initialization. Other than new registers on V2, following two register's offset and bit definitions are different: POWERDOWN control and PLL_STATUS. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qusb2.c | 64 +++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index b65635fba0e7..9b0d1ff89f97 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -40,15 +40,34 @@ /* QUSB2PHY_PLL_STATUS register bits */ #define PLL_LOCKED BIT(5) +/* QUSB2PHY_PLL_COMMON_STATUS_ONE register bits */ +#define CORE_READY_STATUS BIT(0) + /* QUSB2PHY_PORT_POWERDOWN register bits */ #define CLAMP_N_EN BIT(5) #define FREEZIO_N BIT(1) #define POWER_DOWN BIT(0) +/* QUSB2PHY_PWR_CTRL1 register bits */ +#define PWR_CTRL1_VREF_SUPPLY_TRIM BIT(5) +#define PWR_CTRL1_CLAMP_N_EN BIT(1) + #define QUSB2PHY_REFCLK_ENABLE BIT(0) #define PHY_CLK_SCHEME_SEL BIT(0) +#define QUSB2PHY_PLL_ANALOG_CONTROLS_TWO 0x04 +#define QUSB2PHY_PLL_CLOCK_INVERTERS 0x18c +#define QUSB2PHY_PLL_CMODE 0x2c +#define QUSB2PHY_PLL_LOCK_DELAY 0x184 +#define QUSB2PHY_PLL_DIGITAL_TIMERS_TWO 0xb4 +#define QUSB2PHY_PLL_BIAS_CONTROL_1 0x194 +#define QUSB2PHY_PLL_BIAS_CONTROL_2 0x198 +#define QUSB2PHY_PWR_CTRL2 0x214 +#define QUSB2PHY_IMP_CTRL1 0x220 +#define QUSB2PHY_IMP_CTRL2 0x224 +#define QUSB2PHY_CHG_CTRL2 0x23c + struct qusb2_phy_init_tbl { unsigned int offset; unsigned int val; @@ -113,6 +132,38 @@ static const struct qusb2_phy_init_tbl msm8996_init_tbl[] = { QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_PWR_CTRL, 0x00), }; +static const unsigned int qusb2_v2_regs_layout[] = { + [QUSB2PHY_PLL_STATUS] = 0x1a0, + [QUSB2PHY_PORT_TUNE1] = 0x240, + [QUSB2PHY_PORT_TUNE2] = 0x244, + [QUSB2PHY_PORT_TUNE3] = 0x248, + [QUSB2PHY_PORT_TUNE4] = 0x24c, + [QUSB2PHY_PORT_TUNE5] = 0x250, + [QUSB2PHY_PORT_TEST2] = 0x258, + [QUSB2PHY_PORT_POWERDOWN] = 0x210, +}; + +static const struct qusb2_phy_init_tbl qusb2_v2_init_tbl[] = { + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_ANALOG_CONTROLS_TWO, 0x03), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_CLOCK_INVERTERS, 0x7c), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_CMODE, 0x80), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_LOCK_DELAY, 0x0a), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_DIGITAL_TIMERS_TWO, 0x19), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_BIAS_CONTROL_1, 0x40), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_BIAS_CONTROL_2, 0x20), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PWR_CTRL2, 0x21), + QUSB2_PHY_INIT_CFG(QUSB2PHY_IMP_CTRL1, 0x0), + QUSB2_PHY_INIT_CFG(QUSB2PHY_IMP_CTRL2, 0x58), + + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE1, 0x30), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE2, 0x29), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE3, 0xca), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE4, 0x04), + QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE5, 0x03), + + QUSB2_PHY_INIT_CFG(QUSB2PHY_CHG_CTRL2, 0x0), +}; + struct qusb2_phy_cfg { const struct qusb2_phy_init_tbl *tbl; /* number of entries in the table */ @@ -142,6 +193,16 @@ static const struct qusb2_phy_cfg msm8996_phy_cfg = { .mask_core_ready = PLL_LOCKED, }; +static const struct qusb2_phy_cfg qusb2_v2_phy_cfg = { + .tbl = qusb2_v2_init_tbl, + .tbl_num = ARRAY_SIZE(qusb2_v2_init_tbl), + .regs = qusb2_v2_regs_layout, + + .disable_ctrl = (PWR_CTRL1_VREF_SUPPLY_TRIM | PWR_CTRL1_CLAMP_N_EN | + POWER_DOWN), + .mask_core_ready = CORE_READY_STATUS, +}; + static const char * const qusb2_phy_vreg_names[] = { "vdda-pll", "vdda-phy-dpdm", }; @@ -429,6 +490,9 @@ static const struct of_device_id qusb2_phy_of_match_table[] = { { .compatible = "qcom,msm8996-qusb2-phy", .data = &msm8996_phy_cfg, + }, { + .compatible = "qcom,qusb2-v2-phy", + .data = &qusb2_v2_phy_cfg, }, { }, }; From e2248617ec157061131c69a54e896d6a298bfe2c Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:05 +0530 Subject: [PATCH 15/56] phy: qcom-qmp: Move register offsets to header file New revision (v3) of QMP PHY uses different offsets for almost all of the registers. Hence, move these definitions to header file so that updated offsets can be added for QMP v3. Signed-off-by: Manu Gautam Reviewed-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 119 +------------------------- drivers/phy/qualcomm/phy-qcom-qmp.h | 128 ++++++++++++++++++++++++++++ 2 files changed, 129 insertions(+), 118 deletions(-) create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp.h diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index edb6bbe95558..2a1117b1abeb 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -31,124 +31,7 @@ #include -/* QMP PHY QSERDES COM registers */ -#define QSERDES_COM_BG_TIMER 0x00c -#define QSERDES_COM_SSC_EN_CENTER 0x010 -#define QSERDES_COM_SSC_ADJ_PER1 0x014 -#define QSERDES_COM_SSC_ADJ_PER2 0x018 -#define QSERDES_COM_SSC_PER1 0x01c -#define QSERDES_COM_SSC_PER2 0x020 -#define QSERDES_COM_SSC_STEP_SIZE1 0x024 -#define QSERDES_COM_SSC_STEP_SIZE2 0x028 -#define QSERDES_COM_BIAS_EN_CLKBUFLR_EN 0x034 -#define QSERDES_COM_CLK_ENABLE1 0x038 -#define QSERDES_COM_SYS_CLK_CTRL 0x03c -#define QSERDES_COM_SYSCLK_BUF_ENABLE 0x040 -#define QSERDES_COM_PLL_IVCO 0x048 -#define QSERDES_COM_LOCK_CMP1_MODE0 0x04c -#define QSERDES_COM_LOCK_CMP2_MODE0 0x050 -#define QSERDES_COM_LOCK_CMP3_MODE0 0x054 -#define QSERDES_COM_LOCK_CMP1_MODE1 0x058 -#define QSERDES_COM_LOCK_CMP2_MODE1 0x05c -#define QSERDES_COM_LOCK_CMP3_MODE1 0x060 -#define QSERDES_COM_BG_TRIM 0x070 -#define QSERDES_COM_CLK_EP_DIV 0x074 -#define QSERDES_COM_CP_CTRL_MODE0 0x078 -#define QSERDES_COM_CP_CTRL_MODE1 0x07c -#define QSERDES_COM_PLL_RCTRL_MODE0 0x084 -#define QSERDES_COM_PLL_RCTRL_MODE1 0x088 -#define QSERDES_COM_PLL_CCTRL_MODE0 0x090 -#define QSERDES_COM_PLL_CCTRL_MODE1 0x094 -#define QSERDES_COM_BIAS_EN_CTRL_BY_PSM 0x0a8 -#define QSERDES_COM_SYSCLK_EN_SEL 0x0ac -#define QSERDES_COM_RESETSM_CNTRL 0x0b4 -#define QSERDES_COM_RESTRIM_CTRL 0x0bc -#define QSERDES_COM_RESCODE_DIV_NUM 0x0c4 -#define QSERDES_COM_LOCK_CMP_EN 0x0c8 -#define QSERDES_COM_LOCK_CMP_CFG 0x0cc -#define QSERDES_COM_DEC_START_MODE0 0x0d0 -#define QSERDES_COM_DEC_START_MODE1 0x0d4 -#define QSERDES_COM_DIV_FRAC_START1_MODE0 0x0dc -#define QSERDES_COM_DIV_FRAC_START2_MODE0 0x0e0 -#define QSERDES_COM_DIV_FRAC_START3_MODE0 0x0e4 -#define QSERDES_COM_DIV_FRAC_START1_MODE1 0x0e8 -#define QSERDES_COM_DIV_FRAC_START2_MODE1 0x0ec -#define QSERDES_COM_DIV_FRAC_START3_MODE1 0x0f0 -#define QSERDES_COM_INTEGLOOP_GAIN0_MODE0 0x108 -#define QSERDES_COM_INTEGLOOP_GAIN1_MODE0 0x10c -#define QSERDES_COM_INTEGLOOP_GAIN0_MODE1 0x110 -#define QSERDES_COM_INTEGLOOP_GAIN1_MODE1 0x114 -#define QSERDES_COM_VCO_TUNE_CTRL 0x124 -#define QSERDES_COM_VCO_TUNE_MAP 0x128 -#define QSERDES_COM_VCO_TUNE1_MODE0 0x12c -#define QSERDES_COM_VCO_TUNE2_MODE0 0x130 -#define QSERDES_COM_VCO_TUNE1_MODE1 0x134 -#define QSERDES_COM_VCO_TUNE2_MODE1 0x138 -#define QSERDES_COM_VCO_TUNE_TIMER1 0x144 -#define QSERDES_COM_VCO_TUNE_TIMER2 0x148 -#define QSERDES_COM_BG_CTRL 0x170 -#define QSERDES_COM_CLK_SELECT 0x174 -#define QSERDES_COM_HSCLK_SEL 0x178 -#define QSERDES_COM_CORECLK_DIV 0x184 -#define QSERDES_COM_CORE_CLK_EN 0x18c -#define QSERDES_COM_C_READY_STATUS 0x190 -#define QSERDES_COM_CMN_CONFIG 0x194 -#define QSERDES_COM_SVS_MODE_CLK_SEL 0x19c -#define QSERDES_COM_DEBUG_BUS0 0x1a0 -#define QSERDES_COM_DEBUG_BUS1 0x1a4 -#define QSERDES_COM_DEBUG_BUS2 0x1a8 -#define QSERDES_COM_DEBUG_BUS3 0x1ac -#define QSERDES_COM_DEBUG_BUS_SEL 0x1b0 -#define QSERDES_COM_CORECLK_DIV_MODE1 0x1bc - -/* QMP PHY TX registers */ -#define QSERDES_TX_RES_CODE_LANE_OFFSET 0x054 -#define QSERDES_TX_DEBUG_BUS_SEL 0x064 -#define QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN 0x068 -#define QSERDES_TX_LANE_MODE 0x094 -#define QSERDES_TX_RCV_DETECT_LVL_2 0x0ac - -/* QMP PHY RX registers */ -#define QSERDES_RX_UCDR_SO_GAIN_HALF 0x010 -#define QSERDES_RX_UCDR_SO_GAIN 0x01c -#define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN 0x040 -#define QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE 0x048 -#define QSERDES_RX_RX_TERM_BW 0x090 -#define QSERDES_RX_RX_EQ_GAIN1_LSB 0x0c4 -#define QSERDES_RX_RX_EQ_GAIN1_MSB 0x0c8 -#define QSERDES_RX_RX_EQ_GAIN2_LSB 0x0cc -#define QSERDES_RX_RX_EQ_GAIN2_MSB 0x0d0 -#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2 0x0d8 -#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3 0x0dc -#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4 0x0e0 -#define QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x108 -#define QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2 0x10c -#define QSERDES_RX_SIGDET_ENABLES 0x110 -#define QSERDES_RX_SIGDET_CNTRL 0x114 -#define QSERDES_RX_SIGDET_LVL 0x118 -#define QSERDES_RX_SIGDET_DEGLITCH_CNTRL 0x11c -#define QSERDES_RX_RX_BAND 0x120 -#define QSERDES_RX_RX_INTERFACE_MODE 0x12c - -/* QMP PHY PCS registers */ -#define QPHY_POWER_DOWN_CONTROL 0x04 -#define QPHY_TXDEEMPH_M6DB_V0 0x24 -#define QPHY_TXDEEMPH_M3P5DB_V0 0x28 -#define QPHY_ENDPOINT_REFCLK_DRIVE 0x54 -#define QPHY_RX_IDLE_DTCT_CNTRL 0x58 -#define QPHY_POWER_STATE_CONFIG1 0x60 -#define QPHY_POWER_STATE_CONFIG2 0x64 -#define QPHY_POWER_STATE_CONFIG4 0x6c -#define QPHY_LOCK_DETECT_CONFIG1 0x80 -#define QPHY_LOCK_DETECT_CONFIG2 0x84 -#define QPHY_LOCK_DETECT_CONFIG3 0x88 -#define QPHY_PWRUP_RESET_DLY_TIME_AUXCLK 0xa0 -#define QPHY_LP_WAKEUP_DLY_TIME_AUXCLK 0xa4 -#define QPHY_PLL_LOCK_CHK_DLY_TIME_AUXCLK_LSB 0x1A8 -#define QPHY_OSC_DTCT_ACTIONS 0x1AC -#define QPHY_RX_SIGDET_LVL 0x1D8 -#define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_LSB 0x1DC -#define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_MSB 0x1E0 +#include "phy-qcom-qmp.h" /* QPHY_SW_RESET bit */ #define SW_RESET BIT(0) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.h b/drivers/phy/qualcomm/phy-qcom-qmp.h new file mode 100644 index 000000000000..84d7038dcc09 --- /dev/null +++ b/drivers/phy/qualcomm/phy-qcom-qmp.h @@ -0,0 +1,128 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2017, The Linux Foundation. All rights reserved. + */ + +#ifndef QCOM_PHY_QMP_H_ +#define QCOM_PHY_QMP_H_ + +/* Only for QMP V2 PHY - QSERDES COM registers */ +#define QSERDES_COM_BG_TIMER 0x00c +#define QSERDES_COM_SSC_EN_CENTER 0x010 +#define QSERDES_COM_SSC_ADJ_PER1 0x014 +#define QSERDES_COM_SSC_ADJ_PER2 0x018 +#define QSERDES_COM_SSC_PER1 0x01c +#define QSERDES_COM_SSC_PER2 0x020 +#define QSERDES_COM_SSC_STEP_SIZE1 0x024 +#define QSERDES_COM_SSC_STEP_SIZE2 0x028 +#define QSERDES_COM_BIAS_EN_CLKBUFLR_EN 0x034 +#define QSERDES_COM_CLK_ENABLE1 0x038 +#define QSERDES_COM_SYS_CLK_CTRL 0x03c +#define QSERDES_COM_SYSCLK_BUF_ENABLE 0x040 +#define QSERDES_COM_PLL_IVCO 0x048 +#define QSERDES_COM_LOCK_CMP1_MODE0 0x04c +#define QSERDES_COM_LOCK_CMP2_MODE0 0x050 +#define QSERDES_COM_LOCK_CMP3_MODE0 0x054 +#define QSERDES_COM_LOCK_CMP1_MODE1 0x058 +#define QSERDES_COM_LOCK_CMP2_MODE1 0x05c +#define QSERDES_COM_LOCK_CMP3_MODE1 0x060 +#define QSERDES_COM_BG_TRIM 0x070 +#define QSERDES_COM_CLK_EP_DIV 0x074 +#define QSERDES_COM_CP_CTRL_MODE0 0x078 +#define QSERDES_COM_CP_CTRL_MODE1 0x07c +#define QSERDES_COM_PLL_RCTRL_MODE0 0x084 +#define QSERDES_COM_PLL_RCTRL_MODE1 0x088 +#define QSERDES_COM_PLL_CCTRL_MODE0 0x090 +#define QSERDES_COM_PLL_CCTRL_MODE1 0x094 +#define QSERDES_COM_BIAS_EN_CTRL_BY_PSM 0x0a8 +#define QSERDES_COM_SYSCLK_EN_SEL 0x0ac +#define QSERDES_COM_RESETSM_CNTRL 0x0b4 +#define QSERDES_COM_RESTRIM_CTRL 0x0bc +#define QSERDES_COM_RESCODE_DIV_NUM 0x0c4 +#define QSERDES_COM_LOCK_CMP_EN 0x0c8 +#define QSERDES_COM_LOCK_CMP_CFG 0x0cc +#define QSERDES_COM_DEC_START_MODE0 0x0d0 +#define QSERDES_COM_DEC_START_MODE1 0x0d4 +#define QSERDES_COM_DIV_FRAC_START1_MODE0 0x0dc +#define QSERDES_COM_DIV_FRAC_START2_MODE0 0x0e0 +#define QSERDES_COM_DIV_FRAC_START3_MODE0 0x0e4 +#define QSERDES_COM_DIV_FRAC_START1_MODE1 0x0e8 +#define QSERDES_COM_DIV_FRAC_START2_MODE1 0x0ec +#define QSERDES_COM_DIV_FRAC_START3_MODE1 0x0f0 +#define QSERDES_COM_INTEGLOOP_GAIN0_MODE0 0x108 +#define QSERDES_COM_INTEGLOOP_GAIN1_MODE0 0x10c +#define QSERDES_COM_INTEGLOOP_GAIN0_MODE1 0x110 +#define QSERDES_COM_INTEGLOOP_GAIN1_MODE1 0x114 +#define QSERDES_COM_VCO_TUNE_CTRL 0x124 +#define QSERDES_COM_VCO_TUNE_MAP 0x128 +#define QSERDES_COM_VCO_TUNE1_MODE0 0x12c +#define QSERDES_COM_VCO_TUNE2_MODE0 0x130 +#define QSERDES_COM_VCO_TUNE1_MODE1 0x134 +#define QSERDES_COM_VCO_TUNE2_MODE1 0x138 +#define QSERDES_COM_VCO_TUNE_TIMER1 0x144 +#define QSERDES_COM_VCO_TUNE_TIMER2 0x148 +#define QSERDES_COM_BG_CTRL 0x170 +#define QSERDES_COM_CLK_SELECT 0x174 +#define QSERDES_COM_HSCLK_SEL 0x178 +#define QSERDES_COM_CORECLK_DIV 0x184 +#define QSERDES_COM_CORE_CLK_EN 0x18c +#define QSERDES_COM_C_READY_STATUS 0x190 +#define QSERDES_COM_CMN_CONFIG 0x194 +#define QSERDES_COM_SVS_MODE_CLK_SEL 0x19c +#define QSERDES_COM_DEBUG_BUS0 0x1a0 +#define QSERDES_COM_DEBUG_BUS1 0x1a4 +#define QSERDES_COM_DEBUG_BUS2 0x1a8 +#define QSERDES_COM_DEBUG_BUS3 0x1ac +#define QSERDES_COM_DEBUG_BUS_SEL 0x1b0 +#define QSERDES_COM_CORECLK_DIV_MODE1 0x1bc + +/* Only for QMP V2 PHY - TX registers */ +#define QSERDES_TX_RES_CODE_LANE_OFFSET 0x054 +#define QSERDES_TX_DEBUG_BUS_SEL 0x064 +#define QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN 0x068 +#define QSERDES_TX_LANE_MODE 0x094 +#define QSERDES_TX_RCV_DETECT_LVL_2 0x0ac + +/* Only for QMP V2 PHY - RX registers */ +#define QSERDES_RX_UCDR_SO_GAIN_HALF 0x010 +#define QSERDES_RX_UCDR_SO_GAIN 0x01c +#define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN 0x040 +#define QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE 0x048 +#define QSERDES_RX_RX_TERM_BW 0x090 +#define QSERDES_RX_RX_EQ_GAIN1_LSB 0x0c4 +#define QSERDES_RX_RX_EQ_GAIN1_MSB 0x0c8 +#define QSERDES_RX_RX_EQ_GAIN2_LSB 0x0cc +#define QSERDES_RX_RX_EQ_GAIN2_MSB 0x0d0 +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2 0x0d8 +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3 0x0dc +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4 0x0e0 +#define QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x108 +#define QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2 0x10c +#define QSERDES_RX_SIGDET_ENABLES 0x110 +#define QSERDES_RX_SIGDET_CNTRL 0x114 +#define QSERDES_RX_SIGDET_LVL 0x118 +#define QSERDES_RX_SIGDET_DEGLITCH_CNTRL 0x11c +#define QSERDES_RX_RX_BAND 0x120 +#define QSERDES_RX_RX_INTERFACE_MODE 0x12c + +/* Only for QMP V2 PHY - PCS registers */ +#define QPHY_POWER_DOWN_CONTROL 0x04 +#define QPHY_TXDEEMPH_M6DB_V0 0x24 +#define QPHY_TXDEEMPH_M3P5DB_V0 0x28 +#define QPHY_ENDPOINT_REFCLK_DRIVE 0x54 +#define QPHY_RX_IDLE_DTCT_CNTRL 0x58 +#define QPHY_POWER_STATE_CONFIG1 0x60 +#define QPHY_POWER_STATE_CONFIG2 0x64 +#define QPHY_POWER_STATE_CONFIG4 0x6c +#define QPHY_LOCK_DETECT_CONFIG1 0x80 +#define QPHY_LOCK_DETECT_CONFIG2 0x84 +#define QPHY_LOCK_DETECT_CONFIG3 0x88 +#define QPHY_PWRUP_RESET_DLY_TIME_AUXCLK 0xa0 +#define QPHY_LP_WAKEUP_DLY_TIME_AUXCLK 0xa4 +#define QPHY_PLL_LOCK_CHK_DLY_TIME_AUXCLK_LSB 0x1A8 +#define QPHY_OSC_DTCT_ACTIONS 0x1AC +#define QPHY_RX_SIGDET_LVL 0x1D8 +#define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_LSB 0x1DC +#define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_MSB 0x1E0 + +#endif From 9c7761a360df08451bf61a5ea8a7b131c611ffd2 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:06 +0530 Subject: [PATCH 16/56] phy: qcom-qmp: Add register offsets for QMP V3 PHY Registers offsets for QMP V3 PHY are changed from previous versions (1/2), update same in header file. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.h | 149 ++++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.h b/drivers/phy/qualcomm/phy-qcom-qmp.h index 84d7038dcc09..944269a62761 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.h +++ b/drivers/phy/qualcomm/phy-qcom-qmp.h @@ -125,4 +125,153 @@ #define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_LSB 0x1DC #define QPHY_L1SS_WAKEUP_DLY_TIME_AUXCLK_MSB 0x1E0 +/* Only for QMP V3 PHY - DP COM registers */ +#define QPHY_V3_DP_COM_PHY_MODE_CTRL 0x00 +#define QPHY_V3_DP_COM_SW_RESET 0x04 +#define QPHY_V3_DP_COM_POWER_DOWN_CTRL 0x08 +#define QPHY_V3_DP_COM_SWI_CTRL 0x0c +#define QPHY_V3_DP_COM_TYPEC_CTRL 0x10 +#define QPHY_V3_DP_COM_TYPEC_PWRDN_CTRL 0x14 +#define QPHY_V3_DP_COM_RESET_OVRD_CTRL 0x1c + +/* Only for QMP V3 PHY - QSERDES COM registers */ +#define QSERDES_V3_COM_BG_TIMER 0x00c +#define QSERDES_V3_COM_SSC_EN_CENTER 0x010 +#define QSERDES_V3_COM_SSC_ADJ_PER1 0x014 +#define QSERDES_V3_COM_SSC_ADJ_PER2 0x018 +#define QSERDES_V3_COM_SSC_PER1 0x01c +#define QSERDES_V3_COM_SSC_PER2 0x020 +#define QSERDES_V3_COM_SSC_STEP_SIZE1 0x024 +#define QSERDES_V3_COM_SSC_STEP_SIZE2 0x028 +#define QSERDES_V3_COM_BIAS_EN_CLKBUFLR_EN 0x034 +#define QSERDES_V3_COM_CLK_ENABLE1 0x038 +#define QSERDES_V3_COM_SYS_CLK_CTRL 0x03c +#define QSERDES_V3_COM_SYSCLK_BUF_ENABLE 0x040 +#define QSERDES_V3_COM_PLL_IVCO 0x048 +#define QSERDES_V3_COM_LOCK_CMP1_MODE0 0x098 +#define QSERDES_V3_COM_LOCK_CMP2_MODE0 0x09c +#define QSERDES_V3_COM_LOCK_CMP3_MODE0 0x0a0 +#define QSERDES_V3_COM_LOCK_CMP1_MODE1 0x0a4 +#define QSERDES_V3_COM_LOCK_CMP2_MODE1 0x0a8 +#define QSERDES_V3_COM_LOCK_CMP3_MODE1 0x0ac +#define QSERDES_V3_COM_CLK_EP_DIV 0x05c +#define QSERDES_V3_COM_CP_CTRL_MODE0 0x060 +#define QSERDES_V3_COM_CP_CTRL_MODE1 0x064 +#define QSERDES_V3_COM_PLL_RCTRL_MODE0 0x068 +#define QSERDES_V3_COM_PLL_RCTRL_MODE1 0x06c +#define QSERDES_V3_COM_PLL_CCTRL_MODE0 0x070 +#define QSERDES_V3_COM_PLL_CCTRL_MODE1 0x074 +#define QSERDES_V3_COM_SYSCLK_EN_SEL 0x080 +#define QSERDES_V3_COM_RESETSM_CNTRL 0x088 +#define QSERDES_V3_COM_RESETSM_CNTRL2 0x08c +#define QSERDES_V3_COM_LOCK_CMP_EN 0x090 +#define QSERDES_V3_COM_LOCK_CMP_CFG 0x094 +#define QSERDES_V3_COM_DEC_START_MODE0 0x0b0 +#define QSERDES_V3_COM_DEC_START_MODE1 0x0b4 +#define QSERDES_V3_COM_DIV_FRAC_START1_MODE0 0x0b8 +#define QSERDES_V3_COM_DIV_FRAC_START2_MODE0 0x0bc +#define QSERDES_V3_COM_DIV_FRAC_START3_MODE0 0x0c0 +#define QSERDES_V3_COM_DIV_FRAC_START1_MODE1 0x0c4 +#define QSERDES_V3_COM_DIV_FRAC_START2_MODE1 0x0c8 +#define QSERDES_V3_COM_DIV_FRAC_START3_MODE1 0x0cc +#define QSERDES_V3_COM_INTEGLOOP_GAIN0_MODE0 0x0d8 +#define QSERDES_V3_COM_INTEGLOOP_GAIN1_MODE0 0x0dc +#define QSERDES_V3_COM_INTEGLOOP_GAIN0_MODE1 0x0e0 +#define QSERDES_V3_COM_INTEGLOOP_GAIN1_MODE1 0x0e4 +#define QSERDES_V3_COM_VCO_TUNE_CTRL 0x0ec +#define QSERDES_V3_COM_VCO_TUNE_MAP 0x0f0 +#define QSERDES_V3_COM_VCO_TUNE1_MODE0 0x0f4 +#define QSERDES_V3_COM_VCO_TUNE2_MODE0 0x0f8 +#define QSERDES_V3_COM_VCO_TUNE1_MODE1 0x0fc +#define QSERDES_V3_COM_VCO_TUNE2_MODE1 0x100 +#define QSERDES_V3_COM_VCO_TUNE_TIMER1 0x11c +#define QSERDES_V3_COM_VCO_TUNE_TIMER2 0x120 +#define QSERDES_V3_COM_CLK_SELECT 0x138 +#define QSERDES_V3_COM_HSCLK_SEL 0x13c +#define QSERDES_V3_COM_CORECLK_DIV_MODE0 0x148 +#define QSERDES_V3_COM_CORECLK_DIV_MODE1 0x14c +#define QSERDES_V3_COM_CORE_CLK_EN 0x154 +#define QSERDES_V3_COM_C_READY_STATUS 0x158 +#define QSERDES_V3_COM_CMN_CONFIG 0x15c +#define QSERDES_V3_COM_SVS_MODE_CLK_SEL 0x164 +#define QSERDES_V3_COM_DEBUG_BUS0 0x168 +#define QSERDES_V3_COM_DEBUG_BUS1 0x16c +#define QSERDES_V3_COM_DEBUG_BUS2 0x170 +#define QSERDES_V3_COM_DEBUG_BUS3 0x174 +#define QSERDES_V3_COM_DEBUG_BUS_SEL 0x178 + +/* Only for QMP V3 PHY - TX registers */ +#define QSERDES_V3_TX_RES_CODE_LANE_OFFSET_TX 0x044 +#define QSERDES_V3_TX_RES_CODE_LANE_OFFSET_RX 0x048 +#define QSERDES_V3_TX_DEBUG_BUS_SEL 0x058 +#define QSERDES_V3_TX_HIGHZ_DRVR_EN 0x060 +#define QSERDES_V3_TX_LANE_MODE_1 0x08c +#define QSERDES_V3_TX_RCV_DETECT_LVL_2 0x0a4 + +/* Only for QMP V3 PHY - RX registers */ +#define QSERDES_V3_RX_UCDR_SO_GAIN_HALF 0x00c +#define QSERDES_V3_RX_UCDR_SO_GAIN 0x014 +#define QSERDES_V3_RX_UCDR_FASTLOCK_FO_GAIN 0x030 +#define QSERDES_V3_RX_UCDR_SO_SATURATION_AND_ENABLE 0x034 +#define QSERDES_V3_RX_RX_TERM_BW 0x07c +#define QSERDES_V3_RX_RX_EQ_GAIN2_LSB 0x0c8 +#define QSERDES_V3_RX_RX_EQ_GAIN2_MSB 0x0cc +#define QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL2 0x0d4 +#define QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL3 0x0d8 +#define QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL4 0x0dc +#define QSERDES_V3_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x0f8 +#define QSERDES_V3_RX_RX_OFFSET_ADAPTOR_CNTRL2 0x0fc +#define QSERDES_V3_RX_SIGDET_ENABLES 0x100 +#define QSERDES_V3_RX_SIGDET_CNTRL 0x104 +#define QSERDES_V3_RX_SIGDET_LVL 0x108 +#define QSERDES_V3_RX_SIGDET_DEGLITCH_CNTRL 0x10c +#define QSERDES_V3_RX_RX_BAND 0x110 +#define QSERDES_V3_RX_RX_INTERFACE_MODE 0x11c + +/* Only for QMP V3 PHY - PCS registers */ +#define QPHY_V3_PCS_POWER_DOWN_CONTROL 0x004 +#define QPHY_V3_PCS_TXMGN_V0 0x00c +#define QPHY_V3_PCS_TXMGN_V1 0x010 +#define QPHY_V3_PCS_TXMGN_V2 0x014 +#define QPHY_V3_PCS_TXMGN_V3 0x018 +#define QPHY_V3_PCS_TXMGN_V4 0x01c +#define QPHY_V3_PCS_TXMGN_LS 0x020 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V0 0x024 +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V0 0x028 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V1 0x02c +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V1 0x030 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V2 0x034 +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V2 0x038 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V3 0x03c +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V3 0x040 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_V4 0x044 +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_V4 0x048 +#define QPHY_V3_PCS_TXDEEMPH_M6DB_LS 0x04c +#define QPHY_V3_PCS_TXDEEMPH_M3P5DB_LS 0x050 +#define QPHY_V3_PCS_ENDPOINT_REFCLK_DRIVE 0x054 +#define QPHY_V3_PCS_RX_IDLE_DTCT_CNTRL 0x058 +#define QPHY_V3_PCS_RATE_SLEW_CNTRL 0x05c +#define QPHY_V3_PCS_POWER_STATE_CONFIG1 0x060 +#define QPHY_V3_PCS_POWER_STATE_CONFIG2 0x064 +#define QPHY_V3_PCS_POWER_STATE_CONFIG4 0x06c +#define QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_L 0x070 +#define QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_H 0x074 +#define QPHY_V3_PCS_RCVR_DTCT_DLY_U3_L 0x078 +#define QPHY_V3_PCS_RCVR_DTCT_DLY_U3_H 0x07c +#define QPHY_V3_PCS_LOCK_DETECT_CONFIG1 0x080 +#define QPHY_V3_PCS_LOCK_DETECT_CONFIG2 0x084 +#define QPHY_V3_PCS_LOCK_DETECT_CONFIG3 0x088 +#define QPHY_V3_PCS_TSYNC_RSYNC_TIME 0x08c +#define QPHY_V3_PCS_PWRUP_RESET_DLY_TIME_AUXCLK 0x0a0 +#define QPHY_V3_PCS_LP_WAKEUP_DLY_TIME_AUXCLK 0x0a4 +#define QPHY_V3_PCS_LFPS_TX_ECSTART_EQTLOCK 0x0b0 +#define QPHY_V3_PCS_RXEQTRAINING_WAIT_TIME 0x0b8 +#define QPHY_V3_PCS_RXEQTRAINING_RUN_TIME 0x0bc +#define QPHY_V3_PCS_FLL_CNTRL1 0x0c4 +#define QPHY_V3_PCS_FLL_CNTRL2 0x0c8 +#define QPHY_V3_PCS_FLL_CNT_VAL_L 0x0cc +#define QPHY_V3_PCS_FLL_CNT_VAL_H_TOL 0x0d0 +#define QPHY_V3_PCS_FLL_MAN_CODE 0x0d4 +#define QPHY_V3_PCS_RX_SIGDET_LVL 0x1d8 + #endif From 8587b220f05e4f09e6b2b7c0c078b9ee7f8cfd9e Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:07 +0530 Subject: [PATCH 17/56] dt-bindings: phy-qcom-qmp: Update bindings for QMP V3 USB PHY Update compatible string and clock names for QMP version V3 USB PHY. Acked-by: Rob Herring Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt index b6a9f2b92bab..dcf1b8f691d5 100644 --- a/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt +++ b/Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt @@ -8,7 +8,8 @@ Required properties: - compatible: compatible list, contains: "qcom,ipq8074-qmp-pcie-phy" for PCIe phy on IPQ8074 "qcom,msm8996-qmp-pcie-phy" for 14nm PCIe phy on msm8996, - "qcom,msm8996-qmp-usb3-phy" for 14nm USB3 phy on msm8996. + "qcom,msm8996-qmp-usb3-phy" for 14nm USB3 phy on msm8996, + "qcom,qmp-v3-usb3-phy" for USB3 QMP V3 phy. - reg: offset and length of register set for PHY's common serdes block. @@ -25,10 +26,13 @@ Required properties: - clock-names: "cfg_ahb" for phy config clock, "aux" for phy aux clock, "ref" for 19.2 MHz ref clk, + "com_aux" for phy common block aux clock, For "qcom,msm8996-qmp-pcie-phy" must contain: "aux", "cfg_ahb", "ref". For "qcom,msm8996-qmp-usb3-phy" must contain: "aux", "cfg_ahb", "ref". + For "qcom,qmp-v3-usb3-phy" must contain: + "aux", "cfg_ahb", "ref", "com_aux". - resets: a list of phandles and reset controller specifier pairs, one for each entry in reset-names. From efb05a50c956b4ccd09c8401eed53bf3894d4026 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:08 +0530 Subject: [PATCH 18/56] phy: qcom-qmp: Add support for QMP V3 USB3 PHY QMP V3 USB3 PHY is a DisplayPort (DP) and USB combo PHY with dual RX/TX lanes to support type-c. There is a separate block DP_COM for configuration related to type-c or DP. Add support for dp_com region and secondary rx/tx lanes initialization. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 223 +++++++++++++++++++++++++++- 1 file changed, 220 insertions(+), 3 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 2a1117b1abeb..55b83974b531 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -47,6 +47,21 @@ /* QPHY_COM_PCS_READY_STATUS bit */ #define PCS_READY BIT(0) +/* QPHY_V3_DP_COM_RESET_OVRD_CTRL register bits */ +/* DP PHY soft reset */ +#define SW_DPPHY_RESET BIT(0) +/* mux to select DP PHY reset control, 0:HW control, 1: software reset */ +#define SW_DPPHY_RESET_MUX BIT(1) +/* USB3 PHY soft reset */ +#define SW_USB3PHY_RESET BIT(2) +/* mux to select USB3 PHY reset control, 0:HW control, 1: software reset */ +#define SW_USB3PHY_RESET_MUX BIT(3) + +/* QPHY_V3_DP_COM_PHY_MODE_CTRL register bits */ +#define USB3_MODE BIT(0) /* enables USB3 mode */ +#define DP_MODE BIT(1) /* enables DP mode */ + + #define PHY_INIT_COMPLETE_TIMEOUT 1000 #define POWER_DOWN_DELAY_US_MIN 10 #define POWER_DOWN_DELAY_US_MAX 11 @@ -122,6 +137,12 @@ static const unsigned int usb3phy_regs_layout[] = { [QPHY_PCS_READY_STATUS] = 0x17c, }; +static const unsigned int qmp_v3_usb3phy_regs_layout[] = { + [QPHY_SW_RESET] = 0x00, + [QPHY_START_CTRL] = 0x08, + [QPHY_PCS_READY_STATUS] = 0x174, +}; + static const struct qmp_phy_init_tbl msm8996_pcie_serdes_tbl[] = { QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x1c), QMP_PHY_INIT_CFG(QSERDES_COM_CLK_ENABLE1, 0x10), @@ -350,6 +371,112 @@ static const struct qmp_phy_init_tbl ipq8074_pcie_pcs_tbl[] = { QMP_PHY_INIT_CFG_L(QPHY_START_CTRL, 0x3), }; +static const struct qmp_phy_init_tbl qmp_v3_usb3_serdes_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_IVCO, 0x07), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYSCLK_EN_SEL, 0x14), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_BIAS_EN_CLKBUFLR_EN, 0x08), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CLK_SELECT, 0x30), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYS_CLK_CTRL, 0x02), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_RESETSM_CNTRL2, 0x08), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CMN_CONFIG, 0x16), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SVS_MODE_CLK_SEL, 0x01), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_HSCLK_SEL, 0x80), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_DEC_START_MODE0, 0x82), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_DIV_FRAC_START1_MODE0, 0xab), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_DIV_FRAC_START2_MODE0, 0xea), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_DIV_FRAC_START3_MODE0, 0x02), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CP_CTRL_MODE0, 0x06), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_RCTRL_MODE0, 0x16), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_CCTRL_MODE0, 0x36), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN1_MODE0, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN0_MODE0, 0x3f), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE2_MODE0, 0x01), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE1_MODE0, 0xc9), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CORECLK_DIV_MODE0, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP3_MODE0, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP2_MODE0, 0x34), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP1_MODE0, 0x15), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP_EN, 0x04), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_CORE_CLK_EN, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP_CFG, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_MAP, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYSCLK_BUF_ENABLE, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_EN_CENTER, 0x01), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_PER1, 0x31), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_PER2, 0x01), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_ADJ_PER1, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_ADJ_PER2, 0x00), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_STEP_SIZE1, 0x85), + QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_STEP_SIZE2, 0x07), +}; + +static const struct qmp_phy_init_tbl qmp_v3_usb3_tx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_V3_TX_HIGHZ_DRVR_EN, 0x10), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_RCV_DETECT_LVL_2, 0x12), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_LANE_MODE_1, 0x16), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_RES_CODE_LANE_OFFSET_RX, 0x09), + QMP_PHY_INIT_CFG(QSERDES_V3_TX_RES_CODE_LANE_OFFSET_TX, 0x06), +}; + +static const struct qmp_phy_init_tbl qmp_v3_usb3_rx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_FASTLOCK_FO_GAIN, 0x0b), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL2, 0x0f), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4e), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL4, 0x18), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x77), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x80), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_CNTRL, 0x03), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_DEGLITCH_CNTRL, 0x16), + QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x75), +}; + +static const struct qmp_phy_init_tbl qmp_v3_usb3_pcs_tbl[] = { + /* FLL settings */ + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL2, 0x83), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNT_VAL_L, 0x09), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNT_VAL_H_TOL, 0xa2), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_MAN_CODE, 0x40), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL1, 0x02), + + /* Lock Det settings */ + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG1, 0xd1), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG2, 0x1f), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG3, 0x47), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_POWER_STATE_CONFIG2, 0x1b), + + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_SIGDET_LVL, 0xba), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V0, 0x9f), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V1, 0x9f), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V2, 0xb7), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V3, 0x4e), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_V4, 0x65), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXMGN_LS, 0x6b), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V0, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V0, 0x0d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V1, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V1, 0x0d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V2, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V2, 0x0d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V3, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V3, 0x1d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V4, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V4, 0x0d), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_LS, 0x15), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_LS, 0x0d), + + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RATE_SLEW_CNTRL, 0x02), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_PWRUP_RESET_DLY_TIME_AUXCLK, 0x04), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TSYNC_RSYNC_TIME, 0x44), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_PWRUP_RESET_DLY_TIME_AUXCLK, 0x04), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_L, 0xe7), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_H, 0x03), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_U3_L, 0x40), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_U3_H, 0x00), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RXEQTRAINING_WAIT_TIME, 0x75), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LFPS_TX_ECSTART_EQTLOCK, 0x86), + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RXEQTRAINING_RUN_TIME, 0x13), +}; + /* struct qmp_phy_cfg - per-PHY initialization config */ struct qmp_phy_cfg { /* phy-type - PCIE/UFS/USB */ @@ -394,6 +521,12 @@ struct qmp_phy_cfg { /* power_down delay in usec */ int pwrdn_delay_min; int pwrdn_delay_max; + + /* true, if PHY has a separate DP_COM control block */ + bool has_phy_dp_com_ctrl; + /* Register offset of secondary tx/rx lanes for USB DP combo PHY */ + unsigned int tx_b_lane_offset; + unsigned int rx_b_lane_offset; }; /** @@ -424,6 +557,7 @@ struct qmp_phy { * * @dev: device * @serdes: iomapped memory space for phy's serdes + * @dp_com: iomapped memory space for phy's dp_com control block * * @clks: array of clocks required by phy * @resets: array of resets required by phy @@ -437,6 +571,7 @@ struct qmp_phy { struct qcom_qmp { struct device *dev; void __iomem *serdes; + void __iomem *dp_com; struct clk_bulk_data *clks; struct reset_control **resets; @@ -478,6 +613,10 @@ static const char * const msm8996_phy_clk_l[] = { "aux", "cfg_ahb", "ref", }; +static const char * const qmp_v3_phy_clk_l[] = { + "aux", "cfg_ahb", "ref", "com_aux", +}; + /* list of resets */ static const char * const msm8996_pciephy_reset_l[] = { "phy", "common", "cfg", @@ -584,6 +723,38 @@ static const struct qmp_phy_cfg ipq8074_pciephy_cfg = { .pwrdn_delay_max = 1005, /* us */ }; +static const struct qmp_phy_cfg qmp_v3_usb3phy_cfg = { + .type = PHY_TYPE_USB3, + .nlanes = 1, + + .serdes_tbl = qmp_v3_usb3_serdes_tbl, + .serdes_tbl_num = ARRAY_SIZE(qmp_v3_usb3_serdes_tbl), + .tx_tbl = qmp_v3_usb3_tx_tbl, + .tx_tbl_num = ARRAY_SIZE(qmp_v3_usb3_tx_tbl), + .rx_tbl = qmp_v3_usb3_rx_tbl, + .rx_tbl_num = ARRAY_SIZE(qmp_v3_usb3_rx_tbl), + .pcs_tbl = qmp_v3_usb3_pcs_tbl, + .pcs_tbl_num = ARRAY_SIZE(qmp_v3_usb3_pcs_tbl), + .clk_list = qmp_v3_phy_clk_l, + .num_clks = ARRAY_SIZE(qmp_v3_phy_clk_l), + .reset_list = msm8996_usb3phy_reset_l, + .num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l), + .vreg_list = msm8996_phy_vreg_l, + .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l), + .regs = qmp_v3_usb3phy_regs_layout, + + .start_ctrl = SERDES_START | PCS_START, + .pwrdn_ctrl = SW_PWRDN, + .mask_pcs_ready = PHYSTATUS, + + .pwrdn_delay_min = POWER_DOWN_DELAY_US_MIN, + .pwrdn_delay_max = POWER_DOWN_DELAY_US_MAX, + + .has_phy_dp_com_ctrl = true, + .tx_b_lane_offset = 0x400, + .rx_b_lane_offset = 0x400, +}; + static void qcom_qmp_phy_configure(void __iomem *base, const unsigned int *regs, const struct qmp_phy_init_tbl tbl[], @@ -620,6 +791,7 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) { const struct qmp_phy_cfg *cfg = qmp->cfg; void __iomem *serdes = qmp->serdes; + void __iomem *dp_com = qmp->dp_com; int ret, i; mutex_lock(&qmp->phy_mutex); @@ -663,6 +835,23 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL], SW_PWRDN); + if (cfg->has_phy_dp_com_ctrl) { + qphy_setbits(dp_com, QPHY_V3_DP_COM_POWER_DOWN_CTRL, + SW_PWRDN); + /* override hardware control for reset of qmp phy */ + qphy_setbits(dp_com, QPHY_V3_DP_COM_RESET_OVRD_CTRL, + SW_DPPHY_RESET_MUX | SW_DPPHY_RESET | + SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET); + + qphy_setbits(dp_com, QPHY_V3_DP_COM_PHY_MODE_CTRL, + USB3_MODE | DP_MODE); + + /* bring both QMP USB and QMP DP PHYs PCS block out of reset */ + qphy_clrbits(dp_com, QPHY_V3_DP_COM_RESET_OVRD_CTRL, + SW_DPPHY_RESET_MUX | SW_DPPHY_RESET | + SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET); + } + /* Serdes configuration */ qcom_qmp_phy_configure(serdes, cfg->regs, cfg->serdes_tbl, cfg->serdes_tbl_num); @@ -746,6 +935,7 @@ static int qcom_qmp_phy_init(struct phy *phy) void __iomem *tx = qphy->tx; void __iomem *rx = qphy->rx; void __iomem *pcs = qphy->pcs; + void __iomem *dp_com = qmp->dp_com; void __iomem *status; unsigned int mask, val; int ret; @@ -767,7 +957,16 @@ static int qcom_qmp_phy_init(struct phy *phy) /* Tx, Rx, and PCS configurations */ qcom_qmp_phy_configure(tx, cfg->regs, cfg->tx_tbl, cfg->tx_tbl_num); + /* Configuration for other LANE for USB-DP combo PHY */ + if (cfg->has_phy_dp_com_ctrl) + qcom_qmp_phy_configure(tx + cfg->tx_b_lane_offset, cfg->regs, + cfg->tx_tbl, cfg->tx_tbl_num); + qcom_qmp_phy_configure(rx, cfg->regs, cfg->rx_tbl, cfg->rx_tbl_num); + if (cfg->has_phy_dp_com_ctrl) + qcom_qmp_phy_configure(rx + cfg->rx_b_lane_offset, cfg->regs, + cfg->rx_tbl, cfg->rx_tbl_num); + qcom_qmp_phy_configure(pcs, cfg->regs, cfg->pcs_tbl, cfg->pcs_tbl_num); /* @@ -781,6 +980,8 @@ static int qcom_qmp_phy_init(struct phy *phy) /* Pull PHY out of reset state */ qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); + if (cfg->has_phy_dp_com_ctrl) + qphy_clrbits(dp_com, QPHY_V3_DP_COM_SW_RESET, SW_RESET); /* start SerDes and Phy-Coding-Sublayer */ qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); @@ -1031,6 +1232,9 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = { }, { .compatible = "qcom,ipq8074-qmp-pcie-phy", .data = &ipq8074_pciephy_cfg, + }, { + .compatible = "qcom,qmp-v3-usb3-phy", + .data = &qmp_v3_usb3phy_cfg, }, { }, }; @@ -1054,6 +1258,11 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) qmp->dev = dev; dev_set_drvdata(dev, qmp); + /* Get the specific init parameters of QMP phy */ + qmp->cfg = of_device_get_match_data(dev); + if (!qmp->cfg) + return -EINVAL; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(dev, res); if (IS_ERR(base)) @@ -1062,10 +1271,18 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) /* per PHY serdes; usually located at base address */ qmp->serdes = base; - mutex_init(&qmp->phy_mutex); + /* per PHY dp_com; if PHY has dp_com control block */ + if (qmp->cfg->has_phy_dp_com_ctrl) { + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + "dp_com"); + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); - /* Get the specific init parameters of QMP phy */ - qmp->cfg = of_device_get_match_data(dev); + qmp->dp_com = base; + } + + mutex_init(&qmp->phy_mutex); ret = qcom_qmp_phy_clk_init(dev); if (ret) From 3b3cd24ae61b3bbe9d3cecaff33e7cb3250ce47a Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:09 +0530 Subject: [PATCH 19/56] phy: Add USB speed related PHY modes Add following USB speed related PHY modes: LS (Low Speed), FS (Full Speed), HS (High Speed), SS (Super Speed) Speed related information is required by some QCOM PHY drivers to program PHY monitor resume/remote-wakeup events in suspended state. Speed is needed in order to set correct polarity of wakeup events for detection. E.g. QUSB2 PHY monitors DP/DM line state depending on whether speed is LS or FS/HS to detect resume. Similarly QMP USB3 PHY in SS mode should monitor RX terminations attach/detach and LFPS events depending on SSPHY is active or not. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-core.c | 2 ++ include/linux/phy/phy.h | 18 ++++++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 8f6e8e28996d..09ac8afb97ac 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -351,6 +351,8 @@ int phy_set_mode(struct phy *phy, enum phy_mode mode) mutex_lock(&phy->mutex); ret = phy->ops->set_mode(phy, mode); + if (!ret) + phy->attrs.mode = mode; mutex_unlock(&phy->mutex); return ret; diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 4f8423a948d5..485469e6fa7f 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -25,7 +25,15 @@ struct phy; enum phy_mode { PHY_MODE_INVALID, PHY_MODE_USB_HOST, + PHY_MODE_USB_HOST_LS, + PHY_MODE_USB_HOST_FS, + PHY_MODE_USB_HOST_HS, + PHY_MODE_USB_HOST_SS, PHY_MODE_USB_DEVICE, + PHY_MODE_USB_DEVICE_LS, + PHY_MODE_USB_DEVICE_FS, + PHY_MODE_USB_DEVICE_HS, + PHY_MODE_USB_DEVICE_SS, PHY_MODE_USB_OTG, PHY_MODE_SGMII, PHY_MODE_10GKR, @@ -61,6 +69,7 @@ struct phy_ops { */ struct phy_attrs { u32 bus_width; + enum phy_mode mode; }; /** @@ -144,6 +153,10 @@ int phy_exit(struct phy *phy); int phy_power_on(struct phy *phy); int phy_power_off(struct phy *phy); int phy_set_mode(struct phy *phy, enum phy_mode mode); +static inline enum phy_mode phy_get_mode(struct phy *phy) +{ + return phy->attrs.mode; +} int phy_reset(struct phy *phy); int phy_calibrate(struct phy *phy); static inline int phy_get_bus_width(struct phy *phy) @@ -260,6 +273,11 @@ static inline int phy_set_mode(struct phy *phy, enum phy_mode mode) return -ENOSYS; } +static inline enum phy_mode phy_get_mode(struct phy *phy) +{ + return PHY_MODE_INVALID; +} + static inline int phy_reset(struct phy *phy) { if (!phy) From 891a96f65ac3b12883ddbc6d1a9adf6e54dc903c Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:10 +0530 Subject: [PATCH 20/56] phy: qcom-qusb2: Add support for runtime PM Disable clocks and enable DP/DM wakeup interrupts when suspending PHY. Core driver should notify speed to PHY driver to enable appropriate DP/DM wakeup interrupts polarity in suspend state. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qusb2.c | 176 ++++++++++++++++++++++++++ 1 file changed, 176 insertions(+) diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index 9b0d1ff89f97..f1e4a644814b 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -56,6 +56,18 @@ #define PHY_CLK_SCHEME_SEL BIT(0) +/* QUSB2PHY_INTR_CTRL register bits */ +#define DMSE_INTR_HIGH_SEL BIT(4) +#define DPSE_INTR_HIGH_SEL BIT(3) +#define CHG_DET_INTR_EN BIT(2) +#define DMSE_INTR_EN BIT(1) +#define DPSE_INTR_EN BIT(0) + +/* QUSB2PHY_PLL_CORE_INPUT_OVERRIDE register bits */ +#define CORE_PLL_EN_FROM_RESET BIT(4) +#define CORE_RESET BIT(5) +#define CORE_RESET_MUX BIT(6) + #define QUSB2PHY_PLL_ANALOG_CONTROLS_TWO 0x04 #define QUSB2PHY_PLL_CLOCK_INVERTERS 0x18c #define QUSB2PHY_PLL_CMODE 0x2c @@ -93,6 +105,7 @@ struct qusb2_phy_init_tbl { /* set of registers with offsets different per-PHY */ enum qusb2phy_reg_layout { + QUSB2PHY_PLL_CORE_INPUT_OVERRIDE, QUSB2PHY_PLL_STATUS, QUSB2PHY_PORT_TUNE1, QUSB2PHY_PORT_TUNE2, @@ -112,8 +125,10 @@ static const unsigned int msm8996_regs_layout[] = { [QUSB2PHY_PORT_TUNE3] = 0x88, [QUSB2PHY_PORT_TUNE4] = 0x8c, [QUSB2PHY_PORT_TUNE5] = 0x90, + [QUSB2PHY_PORT_TEST1] = 0xb8, [QUSB2PHY_PORT_TEST2] = 0x9c, [QUSB2PHY_PORT_POWERDOWN] = 0xb4, + [QUSB2PHY_INTR_CTRL] = 0xbc, }; static const struct qusb2_phy_init_tbl msm8996_init_tbl[] = { @@ -133,14 +148,17 @@ static const struct qusb2_phy_init_tbl msm8996_init_tbl[] = { }; static const unsigned int qusb2_v2_regs_layout[] = { + [QUSB2PHY_PLL_CORE_INPUT_OVERRIDE] = 0xa8, [QUSB2PHY_PLL_STATUS] = 0x1a0, [QUSB2PHY_PORT_TUNE1] = 0x240, [QUSB2PHY_PORT_TUNE2] = 0x244, [QUSB2PHY_PORT_TUNE3] = 0x248, [QUSB2PHY_PORT_TUNE4] = 0x24c, [QUSB2PHY_PORT_TUNE5] = 0x250, + [QUSB2PHY_PORT_TEST1] = 0x254, [QUSB2PHY_PORT_TEST2] = 0x258, [QUSB2PHY_PORT_POWERDOWN] = 0x210, + [QUSB2PHY_INTR_CTRL] = 0x230, }; static const struct qusb2_phy_init_tbl qusb2_v2_init_tbl[] = { @@ -175,12 +193,16 @@ struct qusb2_phy_cfg { const unsigned int *regs; unsigned int mask_core_ready; unsigned int disable_ctrl; + unsigned int autoresume_en; /* true if PHY has PLL_TEST register to select clk_scheme */ bool has_pll_test; /* true if TUNE1 register must be updated by fused value, else TUNE2 */ bool update_tune1_with_efuse; + + /* true if PHY has PLL_CORE_INPUT_OVERRIDE register to reset PLL */ + bool has_pll_override; }; static const struct qusb2_phy_cfg msm8996_phy_cfg = { @@ -191,6 +213,7 @@ static const struct qusb2_phy_cfg msm8996_phy_cfg = { .has_pll_test = true, .disable_ctrl = (CLAMP_N_EN | FREEZIO_N | POWER_DOWN), .mask_core_ready = PLL_LOCKED, + .autoresume_en = BIT(3), }; static const struct qusb2_phy_cfg qusb2_v2_phy_cfg = { @@ -201,6 +224,8 @@ static const struct qusb2_phy_cfg qusb2_v2_phy_cfg = { .disable_ctrl = (PWR_CTRL1_VREF_SUPPLY_TRIM | PWR_CTRL1_CLAMP_N_EN | POWER_DOWN), .mask_core_ready = CORE_READY_STATUS, + .has_pll_override = true, + .autoresume_en = BIT(0), }; static const char * const qusb2_phy_vreg_names[] = { @@ -226,6 +251,8 @@ static const char * const qusb2_phy_vreg_names[] = { * * @cfg: phy config data * @has_se_clk_scheme: indicate if PHY has single-ended ref clock scheme + * @phy_initialized: indicate if PHY has been initialized + * @mode: current PHY mode */ struct qusb2_phy { struct phy *phy; @@ -242,6 +269,8 @@ struct qusb2_phy { const struct qusb2_phy_cfg *cfg; bool has_se_clk_scheme; + bool phy_initialized; + enum phy_mode mode; }; static inline void qusb2_setbits(void __iomem *base, u32 offset, u32 val) @@ -317,6 +346,133 @@ static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) } +static int qusb2_phy_set_mode(struct phy *phy, enum phy_mode mode) +{ + struct qusb2_phy *qphy = phy_get_drvdata(phy); + + qphy->mode = mode; + + return 0; +} + +static int __maybe_unused qusb2_phy_runtime_suspend(struct device *dev) +{ + struct qusb2_phy *qphy = dev_get_drvdata(dev); + const struct qusb2_phy_cfg *cfg = qphy->cfg; + u32 intr_mask; + + dev_vdbg(dev, "Suspending QUSB2 Phy, mode:%d\n", qphy->mode); + + if (!qphy->phy_initialized) { + dev_vdbg(dev, "PHY not initialized, bailing out\n"); + return 0; + } + + /* + * Enable DP/DM interrupts to detect line state changes based on current + * speed. In other words, enable the triggers _opposite_ of what the + * current D+/D- levels are e.g. if currently D+ high, D- low + * (HS 'J'/Suspend), configure the mask to trigger on D+ low OR D- high + */ + intr_mask = DPSE_INTR_EN | DMSE_INTR_EN; + switch (qphy->mode) { + case PHY_MODE_USB_HOST_HS: + case PHY_MODE_USB_HOST_FS: + case PHY_MODE_USB_DEVICE_HS: + case PHY_MODE_USB_DEVICE_FS: + intr_mask |= DMSE_INTR_HIGH_SEL; + break; + case PHY_MODE_USB_HOST_LS: + case PHY_MODE_USB_DEVICE_LS: + intr_mask |= DPSE_INTR_HIGH_SEL; + break; + default: + /* No device connected, enable both DP/DM high interrupt */ + intr_mask |= DMSE_INTR_HIGH_SEL; + intr_mask |= DPSE_INTR_HIGH_SEL; + break; + } + + writel(intr_mask, qphy->base + cfg->regs[QUSB2PHY_INTR_CTRL]); + + /* hold core PLL into reset */ + if (cfg->has_pll_override) { + qusb2_setbits(qphy->base, + cfg->regs[QUSB2PHY_PLL_CORE_INPUT_OVERRIDE], + CORE_PLL_EN_FROM_RESET | CORE_RESET | + CORE_RESET_MUX); + } + + /* enable phy auto-resume only if device is connected on bus */ + if (qphy->mode != PHY_MODE_INVALID) { + qusb2_setbits(qphy->base, cfg->regs[QUSB2PHY_PORT_TEST1], + cfg->autoresume_en); + /* Autoresume bit has to be toggled in order to enable it */ + qusb2_clrbits(qphy->base, cfg->regs[QUSB2PHY_PORT_TEST1], + cfg->autoresume_en); + } + + if (!qphy->has_se_clk_scheme) + clk_disable_unprepare(qphy->ref_clk); + + clk_disable_unprepare(qphy->cfg_ahb_clk); + clk_disable_unprepare(qphy->iface_clk); + + return 0; +} + +static int __maybe_unused qusb2_phy_runtime_resume(struct device *dev) +{ + struct qusb2_phy *qphy = dev_get_drvdata(dev); + const struct qusb2_phy_cfg *cfg = qphy->cfg; + int ret; + + dev_vdbg(dev, "Resuming QUSB2 phy, mode:%d\n", qphy->mode); + + if (!qphy->phy_initialized) { + dev_vdbg(dev, "PHY not initialized, bailing out\n"); + return 0; + } + + ret = clk_prepare_enable(qphy->iface_clk); + if (ret) { + dev_err(dev, "failed to enable iface_clk, %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(qphy->cfg_ahb_clk); + if (ret) { + dev_err(dev, "failed to enable cfg ahb clock, %d\n", ret); + goto disable_iface_clk; + } + + if (!qphy->has_se_clk_scheme) { + clk_prepare_enable(qphy->ref_clk); + if (ret) { + dev_err(dev, "failed to enable ref clk, %d\n", ret); + goto disable_ahb_clk; + } + } + + writel(0x0, qphy->base + cfg->regs[QUSB2PHY_INTR_CTRL]); + + /* bring core PLL out of reset */ + if (cfg->has_pll_override) { + qusb2_clrbits(qphy->base, + cfg->regs[QUSB2PHY_PLL_CORE_INPUT_OVERRIDE], + CORE_RESET | CORE_RESET_MUX); + } + + return 0; + +disable_ahb_clk: + clk_disable_unprepare(qphy->cfg_ahb_clk); +disable_iface_clk: + clk_disable_unprepare(qphy->iface_clk); + + return ret; +} + static int qusb2_phy_init(struct phy *phy) { struct qusb2_phy *qphy = phy_get_drvdata(phy); @@ -441,6 +597,7 @@ static int qusb2_phy_init(struct phy *phy) ret = -EBUSY; goto disable_ref_clk; } + qphy->phy_initialized = true; return 0; @@ -477,12 +634,15 @@ static int qusb2_phy_exit(struct phy *phy) regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs); + qphy->phy_initialized = false; + return 0; } static const struct phy_ops qusb2_phy_gen_ops = { .init = qusb2_phy_init, .exit = qusb2_phy_exit, + .set_mode = qusb2_phy_set_mode, .owner = THIS_MODULE, }; @@ -498,6 +658,11 @@ static const struct of_device_id qusb2_phy_of_match_table[] = { }; MODULE_DEVICE_TABLE(of, qusb2_phy_of_match_table); +static const struct dev_pm_ops qusb2_phy_pm_ops = { + SET_RUNTIME_PM_OPS(qusb2_phy_runtime_suspend, + qusb2_phy_runtime_resume, NULL) +}; + static int qusb2_phy_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -575,11 +740,19 @@ static int qusb2_phy_probe(struct platform_device *pdev) qphy->cell = NULL; dev_dbg(dev, "failed to lookup tune2 hstx trim value\n"); } + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + /* + * Prevent runtime pm from being ON by default. Users can enable + * it using power/control in sysfs. + */ + pm_runtime_forbid(dev); generic_phy = devm_phy_create(dev, NULL, &qusb2_phy_gen_ops); if (IS_ERR(generic_phy)) { ret = PTR_ERR(generic_phy); dev_err(dev, "failed to create phy, %d\n", ret); + pm_runtime_disable(dev); return ret; } qphy->phy = generic_phy; @@ -590,6 +763,8 @@ static int qusb2_phy_probe(struct platform_device *pdev) phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (!IS_ERR(phy_provider)) dev_info(dev, "Registered Qcom-QUSB2 phy\n"); + else + pm_runtime_disable(dev); return PTR_ERR_OR_ZERO(phy_provider); } @@ -598,6 +773,7 @@ static struct platform_driver qusb2_phy_driver = { .probe = qusb2_phy_probe, .driver = { .name = "qcom-qusb2-phy", + .pm = &qusb2_phy_pm_ops, .of_match_table = qusb2_phy_of_match_table, }, }; From ac0d239936bd87d044d34037a9b581ca260269e3 Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:11 +0530 Subject: [PATCH 21/56] phy: qcom-qmp: Add support for runtime PM Disable clocks and enable PHY autonomous mode to detect wakeup events when PHY is suspended. Core driver should notify speed to PHY driver to enable LFPS and/or RX_DET interrupts. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 177 +++++++++++++++++++++++++++- drivers/phy/qualcomm/phy-qcom-qmp.h | 3 + 2 files changed, 179 insertions(+), 1 deletion(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 55b83974b531..ba6c5b2e4898 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -61,6 +61,19 @@ #define USB3_MODE BIT(0) /* enables USB3 mode */ #define DP_MODE BIT(1) /* enables DP mode */ +/* QPHY_PCS_AUTONOMOUS_MODE_CTRL register bits */ +#define ARCVR_DTCT_EN BIT(0) +#define ALFPS_DTCT_EN BIT(1) +#define ARCVR_DTCT_EVENT_SEL BIT(4) + +/* QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR register bits */ +#define IRQ_CLEAR BIT(0) + +/* QPHY_PCS_LFPS_RXTERM_IRQ_STATUS register bits */ +#define RCVR_DETECT BIT(0) + +/* QPHY_V3_PCS_MISC_CLAMP_ENABLE register bits */ +#define CLAMP_EN BIT(0) /* enables i/o clamp_n */ #define PHY_INIT_COMPLETE_TIMEOUT 1000 #define POWER_DOWN_DELAY_US_MIN 10 @@ -108,6 +121,9 @@ enum qphy_reg_layout { QPHY_SW_RESET, QPHY_START_CTRL, QPHY_PCS_READY_STATUS, + QPHY_PCS_AUTONOMOUS_MODE_CTRL, + QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR, + QPHY_PCS_LFPS_RXTERM_IRQ_STATUS, }; static const unsigned int pciephy_regs_layout[] = { @@ -135,12 +151,18 @@ static const unsigned int usb3phy_regs_layout[] = { [QPHY_SW_RESET] = 0x00, [QPHY_START_CTRL] = 0x08, [QPHY_PCS_READY_STATUS] = 0x17c, + [QPHY_PCS_AUTONOMOUS_MODE_CTRL] = 0x0d4, + [QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR] = 0x0d8, + [QPHY_PCS_LFPS_RXTERM_IRQ_STATUS] = 0x178, }; static const unsigned int qmp_v3_usb3phy_regs_layout[] = { [QPHY_SW_RESET] = 0x00, [QPHY_START_CTRL] = 0x08, [QPHY_PCS_READY_STATUS] = 0x174, + [QPHY_PCS_AUTONOMOUS_MODE_CTRL] = 0x0d8, + [QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR] = 0x0dc, + [QPHY_PCS_LFPS_RXTERM_IRQ_STATUS] = 0x170, }; static const struct qmp_phy_init_tbl msm8996_pcie_serdes_tbl[] = { @@ -536,6 +558,7 @@ struct qmp_phy_cfg { * @tx: iomapped memory space for lane's tx * @rx: iomapped memory space for lane's rx * @pcs: iomapped memory space for lane's pcs + * @pcs_misc: iomapped memory space for lane's pcs_misc * @pipe_clk: pipe lock * @index: lane index * @qmp: QMP phy to which this lane belongs @@ -546,6 +569,7 @@ struct qmp_phy { void __iomem *tx; void __iomem *rx; void __iomem *pcs; + void __iomem *pcs_misc; struct clk *pipe_clk; unsigned int index; struct qcom_qmp *qmp; @@ -567,6 +591,8 @@ struct qmp_phy { * @phys: array of per-lane phy descriptors * @phy_mutex: mutex lock for PHY common block initialization * @init_count: phy common block initialization count + * @phy_initialized: indicate if PHY has been initialized + * @mode: current PHY mode */ struct qcom_qmp { struct device *dev; @@ -582,6 +608,8 @@ struct qcom_qmp { struct mutex phy_mutex; int init_count; + bool phy_initialized; + enum phy_mode mode; }; static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val) @@ -995,6 +1023,7 @@ static int qcom_qmp_phy_init(struct phy *phy) dev_err(qmp->dev, "phy initialization timed-out\n"); goto err_pcs_ready; } + qmp->phy_initialized = true; return ret; @@ -1029,6 +1058,128 @@ static int qcom_qmp_phy_exit(struct phy *phy) qcom_qmp_phy_com_exit(qmp); + qmp->phy_initialized = false; + + return 0; +} + +static int qcom_qmp_phy_set_mode(struct phy *phy, enum phy_mode mode) +{ + struct qmp_phy *qphy = phy_get_drvdata(phy); + struct qcom_qmp *qmp = qphy->qmp; + + qmp->mode = mode; + + return 0; +} + +static void qcom_qmp_phy_enable_autonomous_mode(struct qmp_phy *qphy) +{ + struct qcom_qmp *qmp = qphy->qmp; + const struct qmp_phy_cfg *cfg = qmp->cfg; + void __iomem *pcs = qphy->pcs; + void __iomem *pcs_misc = qphy->pcs_misc; + u32 intr_mask; + + if (qmp->mode == PHY_MODE_USB_HOST_SS || + qmp->mode == PHY_MODE_USB_DEVICE_SS) + intr_mask = ARCVR_DTCT_EN | ALFPS_DTCT_EN; + else + intr_mask = ARCVR_DTCT_EN | ARCVR_DTCT_EVENT_SEL; + + /* Clear any pending interrupts status */ + qphy_setbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR); + /* Writing 1 followed by 0 clears the interrupt */ + qphy_clrbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR); + + qphy_clrbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL], + ARCVR_DTCT_EN | ALFPS_DTCT_EN | ARCVR_DTCT_EVENT_SEL); + + /* Enable required PHY autonomous mode interrupts */ + qphy_setbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL], intr_mask); + + /* Enable i/o clamp_n for autonomous mode */ + if (pcs_misc) + qphy_clrbits(pcs_misc, QPHY_V3_PCS_MISC_CLAMP_ENABLE, CLAMP_EN); +} + +static void qcom_qmp_phy_disable_autonomous_mode(struct qmp_phy *qphy) +{ + struct qcom_qmp *qmp = qphy->qmp; + const struct qmp_phy_cfg *cfg = qmp->cfg; + void __iomem *pcs = qphy->pcs; + void __iomem *pcs_misc = qphy->pcs_misc; + + /* Disable i/o clamp_n on resume for normal mode */ + if (pcs_misc) + qphy_setbits(pcs_misc, QPHY_V3_PCS_MISC_CLAMP_ENABLE, CLAMP_EN); + + qphy_clrbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL], + ARCVR_DTCT_EN | ARCVR_DTCT_EVENT_SEL | ALFPS_DTCT_EN); + + qphy_setbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR); + /* Writing 1 followed by 0 clears the interrupt */ + qphy_clrbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR); +} + +static int __maybe_unused qcom_qmp_phy_runtime_suspend(struct device *dev) +{ + struct qcom_qmp *qmp = dev_get_drvdata(dev); + struct qmp_phy *qphy = qmp->phys[0]; + const struct qmp_phy_cfg *cfg = qmp->cfg; + + dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qmp->mode); + + /* Supported only for USB3 PHY */ + if (cfg->type != PHY_TYPE_USB3) + return 0; + + if (!qmp->phy_initialized) { + dev_vdbg(dev, "PHY not initialized, bailing out\n"); + return 0; + } + + qcom_qmp_phy_enable_autonomous_mode(qphy); + + clk_disable_unprepare(qphy->pipe_clk); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); + + return 0; +} + +static int __maybe_unused qcom_qmp_phy_runtime_resume(struct device *dev) +{ + struct qcom_qmp *qmp = dev_get_drvdata(dev); + struct qmp_phy *qphy = qmp->phys[0]; + const struct qmp_phy_cfg *cfg = qmp->cfg; + int ret = 0; + + dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qmp->mode); + + /* Supported only for USB3 PHY */ + if (cfg->type != PHY_TYPE_USB3) + return 0; + + if (!qmp->phy_initialized) { + dev_vdbg(dev, "PHY not initialized, bailing out\n"); + return 0; + } + + ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks); + if (ret) { + dev_err(qmp->dev, "failed to enable clks, err=%d\n", ret); + return ret; + } + + ret = clk_prepare_enable(qphy->pipe_clk); + if (ret) { + dev_err(dev, "pipe_clk enable failed, err=%d\n", ret); + clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks); + return ret; + } + + qcom_qmp_phy_disable_autonomous_mode(qphy); + return 0; } @@ -1142,6 +1293,7 @@ static const struct phy_ops qcom_qmp_phy_gen_ops = { .init = qcom_qmp_phy_init, .exit = qcom_qmp_phy_exit, .power_on = qcom_qmp_phy_poweron, + .set_mode = qcom_qmp_phy_set_mode, .owner = THIS_MODULE, }; @@ -1160,7 +1312,8 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id) /* * Get memory resources for each phy lane: - * Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2. + * Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2; and + * pcs_misc (optional) -> 3. */ qphy->tx = of_iomap(np, 0); if (!qphy->tx) @@ -1174,6 +1327,10 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id) if (!qphy->pcs) return -ENOMEM; + qphy->pcs_misc = of_iomap(np, 3); + if (!qphy->pcs_misc) + dev_vdbg(dev, "PHY pcs_misc-reg not used\n"); + /* * Get PHY's Pipe clock, if any. USB3 and PCIe are PIPE3 * based phys, so they essentially have pipe clock. So, @@ -1240,6 +1397,11 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = { }; MODULE_DEVICE_TABLE(of, qcom_qmp_phy_of_match_table); +static const struct dev_pm_ops qcom_qmp_phy_pm_ops = { + SET_RUNTIME_PM_OPS(qcom_qmp_phy_runtime_suspend, + qcom_qmp_phy_runtime_resume, NULL) +}; + static int qcom_qmp_phy_probe(struct platform_device *pdev) { struct qcom_qmp *qmp; @@ -1308,12 +1470,21 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) return -ENOMEM; id = 0; + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + /* + * Prevent runtime pm from being ON by default. Users can enable + * it using power/control in sysfs. + */ + pm_runtime_forbid(dev); + for_each_available_child_of_node(dev->of_node, child) { /* Create per-lane phy */ ret = qcom_qmp_phy_create(dev, child, id); if (ret) { dev_err(dev, "failed to create lane%d phy, %d\n", id, ret); + pm_runtime_disable(dev); return ret; } @@ -1325,6 +1496,7 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) if (ret) { dev_err(qmp->dev, "failed to register pipe clock source\n"); + pm_runtime_disable(dev); return ret; } id++; @@ -1333,6 +1505,8 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev) phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (!IS_ERR(phy_provider)) dev_info(dev, "Registered Qcom-QMP phy\n"); + else + pm_runtime_disable(dev); return PTR_ERR_OR_ZERO(phy_provider); } @@ -1341,6 +1515,7 @@ static struct platform_driver qcom_qmp_phy_driver = { .probe = qcom_qmp_phy_probe, .driver = { .name = "qcom-qmp-phy", + .pm = &qcom_qmp_phy_pm_ops, .of_match_table = qcom_qmp_phy_of_match_table, }, }; diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.h b/drivers/phy/qualcomm/phy-qcom-qmp.h index 944269a62761..d1c6905d0439 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.h +++ b/drivers/phy/qualcomm/phy-qcom-qmp.h @@ -274,4 +274,7 @@ #define QPHY_V3_PCS_FLL_MAN_CODE 0x0d4 #define QPHY_V3_PCS_RX_SIGDET_LVL 0x1d8 +/* Only for QMP V3 PHY - PCS_MISC registers */ +#define QPHY_V3_PCS_MISC_CLAMP_ENABLE 0x0c + #endif From 3405bd71015e87ec255f968dc9a510785ff5e0ee Mon Sep 17 00:00:00 2001 From: Manu Gautam Date: Tue, 16 Jan 2018 16:27:12 +0530 Subject: [PATCH 22/56] phy: add SPDX identifier to QMP and QUSB2 PHY drivers The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. Signed-off-by: Manu Gautam Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/qualcomm/phy-qcom-qmp.c | 11 +---------- drivers/phy/qualcomm/phy-qcom-qusb2.c | 10 +--------- 2 files changed, 2 insertions(+), 19 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index ba6c5b2e4898..6470c5d61d1c 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -1,15 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2017, The Linux Foundation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ #include diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index f1e4a644814b..94afeac1a19e 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -1,14 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2017, The Linux Foundation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include From fee7e1d50c6e6da1d99035181ba5a5c88f5bb526 Mon Sep 17 00:00:00 2001 From: Ulf Magnusson Date: Mon, 5 Feb 2018 02:21:27 +0100 Subject: [PATCH 23/56] phy: Remove SOC_EXYNOS4212 dep. from PHY_EXYNOS4X12_USB Exynos4212 support was removed by commit bca9085e0ae9 ("ARM: dts: exynos: remove Exynos4212 support (dead code)"). Remove the SOC_EXYNOS4212 dependency from PHY_EXYNOS4X12_USB. Discovered with the https://github.com/ulfalizer/Kconfiglib/blob/master/examples/list_undefined.py script. Signed-off-by: Ulf Magnusson Acked-by: Krzysztof Kozlowski Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/samsung/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/samsung/Kconfig b/drivers/phy/samsung/Kconfig index b7e0645a7bd9..2a5d33cb0e7e 100644 --- a/drivers/phy/samsung/Kconfig +++ b/drivers/phy/samsung/Kconfig @@ -49,7 +49,7 @@ config PHY_EXYNOS4210_USB2 config PHY_EXYNOS4X12_USB2 bool depends on PHY_SAMSUNG_USB2 - default SOC_EXYNOS3250 || SOC_EXYNOS4212 || SOC_EXYNOS4412 + default SOC_EXYNOS3250 || SOC_EXYNOS4412 config PHY_EXYNOS5250_USB2 bool From a4781c2a74b249cad814ceea7272997bbd20051e Mon Sep 17 00:00:00 2001 From: Shawn Lin Date: Thu, 11 Jan 2018 10:40:26 +0800 Subject: [PATCH 24/56] phy: rockchip-emmc: retry calpad busy trimming It turns out that 5us isn't enough for all cases, so let's retry some more times to wait for caldone. Signed-off-by: Shawn Lin Tested-by: Ziyuan Xu Signed-off-by: Caesar Wang Reviewed-by: Douglas Anderson Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-emmc.c | 27 +++++++++++++++--------- 1 file changed, 17 insertions(+), 10 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-emmc.c b/drivers/phy/rockchip/phy-rockchip-emmc.c index f1b24f18e9b2..b0d10934413f 100644 --- a/drivers/phy/rockchip/phy-rockchip-emmc.c +++ b/drivers/phy/rockchip/phy-rockchip-emmc.c @@ -76,6 +76,10 @@ #define PHYCTRL_OTAPDLYSEL_MASK 0xf #define PHYCTRL_OTAPDLYSEL_SHIFT 0x7 +#define PHYCTRL_IS_CALDONE(x) \ + ((((x) >> PHYCTRL_CALDONE_SHIFT) & \ + PHYCTRL_CALDONE_MASK) == PHYCTRL_CALDONE_DONE) + struct rockchip_emmc_phy { unsigned int reg_offset; struct regmap *reg_base; @@ -90,6 +94,7 @@ static int rockchip_emmc_phy_power(struct phy *phy, bool on_off) unsigned int freqsel = PHYCTRL_FREQSEL_200M; unsigned long rate; unsigned long timeout; + int ret; /* * Keep phyctrl_pdb and phyctrl_endll low to allow @@ -160,17 +165,19 @@ static int rockchip_emmc_phy_power(struct phy *phy, bool on_off) PHYCTRL_PDB_SHIFT)); /* - * According to the user manual, it asks driver to - * wait 5us for calpad busy trimming + * According to the user manual, it asks driver to wait 5us for + * calpad busy trimming. However it is documented that this value is + * PVT(A.K.A process,voltage and temperature) relevant, so some + * failure cases are found which indicates we should be more tolerant + * to calpad busy trimming. */ - udelay(5); - regmap_read(rk_phy->reg_base, - rk_phy->reg_offset + GRF_EMMCPHY_STATUS, - &caldone); - caldone = (caldone >> PHYCTRL_CALDONE_SHIFT) & PHYCTRL_CALDONE_MASK; - if (caldone != PHYCTRL_CALDONE_DONE) { - pr_err("rockchip_emmc_phy_power: caldone timeout.\n"); - return -ETIMEDOUT; + ret = regmap_read_poll_timeout(rk_phy->reg_base, + rk_phy->reg_offset + GRF_EMMCPHY_STATUS, + caldone, PHYCTRL_IS_CALDONE(caldone), + 0, 50); + if (ret) { + pr_err("%s: caldone failed, ret=%d\n", __func__, ret); + return ret; } /* Set the frequency of the DLL operation */ From 95cc6e7217963bdd58f5ff737a574bea1c6f170b Mon Sep 17 00:00:00 2001 From: Shawn Lin Date: Thu, 11 Jan 2018 10:40:27 +0800 Subject: [PATCH 25/56] phy: rockchip-emmc: use regmap_read_poll_timeout to poll dllrdy Just use the API instead of open-coding it, no functional change intended. Signed-off-by: Shawn Lin Reviewed-by: Brian Norris Signed-off-by: Caesar Wang Reviewed-by: Douglas Anderson Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-emmc.c | 33 ++++++++---------------- 1 file changed, 11 insertions(+), 22 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-emmc.c b/drivers/phy/rockchip/phy-rockchip-emmc.c index b0d10934413f..b237360f95f6 100644 --- a/drivers/phy/rockchip/phy-rockchip-emmc.c +++ b/drivers/phy/rockchip/phy-rockchip-emmc.c @@ -79,6 +79,9 @@ #define PHYCTRL_IS_CALDONE(x) \ ((((x) >> PHYCTRL_CALDONE_SHIFT) & \ PHYCTRL_CALDONE_MASK) == PHYCTRL_CALDONE_DONE) +#define PHYCTRL_IS_DLLRDY(x) \ + ((((x) >> PHYCTRL_DLLRDY_SHIFT) & \ + PHYCTRL_DLLRDY_MASK) == PHYCTRL_DLLRDY_DONE) struct rockchip_emmc_phy { unsigned int reg_offset; @@ -93,7 +96,6 @@ static int rockchip_emmc_phy_power(struct phy *phy, bool on_off) unsigned int dllrdy; unsigned int freqsel = PHYCTRL_FREQSEL_200M; unsigned long rate; - unsigned long timeout; int ret; /* @@ -217,28 +219,15 @@ static int rockchip_emmc_phy_power(struct phy *phy, bool on_off) * NOTE: There appear to be corner cases where the DLL seems to take * extra long to lock for reasons that aren't understood. In some * extreme cases we've seen it take up to over 10ms (!). We'll be - * generous and give it 50ms. We still busy wait here because: - * - In most cases it should be super fast. - * - This is not called lots during normal operation so it shouldn't - * be a power or performance problem to busy wait. We expect it - * only at boot / resume. In both cases, eMMC is probably on the - * critical path so busy waiting a little extra time should be OK. + * generous and give it 50ms. */ - timeout = jiffies + msecs_to_jiffies(50); - do { - udelay(1); - - regmap_read(rk_phy->reg_base, - rk_phy->reg_offset + GRF_EMMCPHY_STATUS, - &dllrdy); - dllrdy = (dllrdy >> PHYCTRL_DLLRDY_SHIFT) & PHYCTRL_DLLRDY_MASK; - if (dllrdy == PHYCTRL_DLLRDY_DONE) - break; - } while (!time_after(jiffies, timeout)); - - if (dllrdy != PHYCTRL_DLLRDY_DONE) { - pr_err("rockchip_emmc_phy_power: dllrdy timeout.\n"); - return -ETIMEDOUT; + ret = regmap_read_poll_timeout(rk_phy->reg_base, + rk_phy->reg_offset + GRF_EMMCPHY_STATUS, + dllrdy, PHYCTRL_IS_DLLRDY(dllrdy), + 0, 50 * USEC_PER_MSEC); + if (ret) { + pr_err("%s: dllrdy failed. ret=%d\n", __func__, ret); + return ret; } return 0; From becaf17a58473e358e056ada2642e895aae93b0e Mon Sep 17 00:00:00 2001 From: Dov Levenglick Date: Fri, 2 Feb 2018 18:34:50 +0200 Subject: [PATCH 26/56] phy: fix structure documentation Add missing documentation of structure members and modify the order of documentation to match that of the structure declaration. Signed-off-by: Dov Levenglick Signed-off-by: Kishon Vijay Abraham I --- include/linux/phy/phy.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 485469e6fa7f..c9d14eeee7f5 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -81,7 +81,8 @@ struct phy_attrs { * @mutex: mutex to protect phy_ops * @init_count: used to protect when the PHY is used by multiple consumers * @power_count: used to protect when the PHY is used by multiple consumers - * @phy_attrs: used to specify PHY specific attributes + * @attrs: used to specify PHY specific attributes + * @pwr: power regulator associated with the phy */ struct phy { struct device dev; @@ -97,9 +98,10 @@ struct phy { /** * struct phy_provider - represents the phy provider * @dev: phy provider device + * @children: can be used to override the default (dev->of_node) child node * @owner: the module owner having of_xlate - * @of_xlate: function pointer to obtain phy instance from phy pointer * @list: to maintain a linked list of PHY providers + * @of_xlate: function pointer to obtain phy instance from phy pointer */ struct phy_provider { struct device *dev; @@ -110,6 +112,13 @@ struct phy_provider { struct of_phandle_args *args); }; +/** + * struct phy_lookup - PHY association in list of phys managed by the phy driver + * @node: list node + * @dev_id: the device of the association + * @con_id: connection ID string on device + * @phy: the phy of the association + */ struct phy_lookup { struct list_head node; const char *dev_id; From d2eced94562f9d69705887e497fee0d17c3099eb Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:41 +0100 Subject: [PATCH 27/56] dt-bindings: phy: meson-gxl-usb2-phy: add the reset line and clock The OTG capable USB2 PHY has a reset line (which is shared with other components, such as the USB3 PHY for example) and a clock (which are both part of different registers). Add the properties for the reset line and clocks as optional ones since not all PHYs have them (currently only the OTG capable PHY is known to use these). Signed-off-by: Martin Blumenstingl Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt b/Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt index a105494a0fc9..b84a02ebffdf 100644 --- a/Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt +++ b/Documentation/devicetree/bindings/phy/meson-gxl-usb2-phy.txt @@ -6,6 +6,10 @@ Required properties: - #phys-cells: must be 0 (see phy-bindings.txt in this directory) Optional properties: +- clocks: a phandle to the clock of this PHY +- clock-names: must be "phy" +- resets: a phandle to the reset line of this PHY +- reset-names: must be "phy" - phy-supply: see phy-bindings.txt in this directory From cba1372812fbc740e57c1982970210ab2b804226 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:44 +0100 Subject: [PATCH 28/56] phy: amlogic: phy-meson-gxl-usb2: don't log an error on -EPROBE_DEFER devm_phy_create can return -EPROBE_DEFER if the phy-supply is not ready yet. Silence this warning as the driver framework will re-attempt registering the PHY - this second try works without any errors. So only log actual errors to keep the kernel log free of misleading error messages. Signed-off-by: Martin Blumenstingl Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/phy-meson-gxl-usb2.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index e90c4ee25dfe..d68c30d3b510 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -210,6 +210,7 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev) struct phy_meson_gxl_usb2_priv *priv; struct phy *phy; void __iomem *base; + int ret; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) @@ -242,8 +243,11 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev) phy = devm_phy_create(dev, NULL, &phy_meson_gxl_usb2_ops); if (IS_ERR(phy)) { - dev_err(dev, "failed to create PHY\n"); - return PTR_ERR(phy); + ret = PTR_ERR(phy); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to create PHY\n"); + + return ret; } phy_set_drvdata(phy, priv); From bc4a0241d4e1e2381f4c3b53ad0199324549e0a8 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:42 +0100 Subject: [PATCH 29/56] phy: amlogic: phy-meson-gxl-usb2: support the clock and reset line The Meson GXL USB2 PHYs require an additional clock (USB) which has to be enabled. If that clock is disabled then all PHY registers read 0x0. Luckily for us that clock is always enabled (either by harddware defaults, the bootrom, or any of the bootloaders before u-boot/BL3-3). The OTG capable USB2 PHY additionally has a reset line (USB_OTG, which is shared with other components, such as the USB3 PHY for example). Extend the driver so it handles this clock and the shared reset line. We only trigger the reset during the .init phase since it's a shared reset line, so triggering it during the driver's .reset implementation would effectively also only trigger it once anyways. Signed-off-by: Martin Blumenstingl Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/phy-meson-gxl-usb2.c | 44 ++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index d68c30d3b510..a92a3fd51e16 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -11,11 +11,13 @@ * along with this program. If not, see . */ +#include #include #include #include #include #include +#include #include #include #include @@ -99,6 +101,8 @@ struct phy_meson_gxl_usb2_priv { struct regmap *regmap; enum phy_mode mode; int is_enabled; + struct clk *clk; + struct reset_control *reset; }; static const struct regmap_config phy_meson_gxl_usb2_regmap_conf = { @@ -108,6 +112,31 @@ static const struct regmap_config phy_meson_gxl_usb2_regmap_conf = { .max_register = U2P_R3, }; +static int phy_meson_gxl_usb2_init(struct phy *phy) +{ + struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); + int ret; + + ret = reset_control_reset(priv->reset); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk); + if (ret) + return ret; + + return 0; +} + +static int phy_meson_gxl_usb2_exit(struct phy *phy) +{ + struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); + + clk_disable_unprepare(priv->clk); + + return 0; +} + static int phy_meson_gxl_usb2_reset(struct phy *phy) { struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); @@ -195,6 +224,8 @@ static int phy_meson_gxl_usb2_power_on(struct phy *phy) } static const struct phy_ops phy_meson_gxl_usb2_ops = { + .init = phy_meson_gxl_usb2_init, + .exit = phy_meson_gxl_usb2_exit, .power_on = phy_meson_gxl_usb2_power_on, .power_off = phy_meson_gxl_usb2_power_off, .set_mode = phy_meson_gxl_usb2_set_mode, @@ -241,6 +272,19 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev) if (IS_ERR(priv->regmap)) return PTR_ERR(priv->regmap); + priv->clk = devm_clk_get(dev, "phy"); + if (IS_ERR(priv->clk)) { + ret = PTR_ERR(priv->clk); + if (ret == -ENOENT) + priv->clk = NULL; + else + return ret; + } + + priv->reset = devm_reset_control_get_optional_shared(dev, "phy"); + if (IS_ERR(priv->reset)) + return PTR_ERR(priv->reset); + phy = devm_phy_create(dev, NULL, &phy_meson_gxl_usb2_ops); if (IS_ERR(phy)) { ret = PTR_ERR(phy); From 05818862bc27255e335ee6085d6ce57b6cb01f99 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:43 +0100 Subject: [PATCH 30/56] phy: amlogic: phy-meson-gxl-usb2: default to host mode The USB2 PHY can switch between PHY_MODE_USB_HOST and PHY_MODE_USB_DEVICE. However, it cannot do it on it's own since it requires re-routing of the corresponding USB pins from dwc3 (which is used for host-mode) to dwc2 (which is used for device-mode). Thus we don't need to auto-detect the mode based on the USB controller, which simplifies the driver code. Signed-off-by: Martin Blumenstingl Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/Kconfig | 1 - drivers/phy/amlogic/phy-meson-gxl-usb2.c | 15 ++------------- 2 files changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/phy/amlogic/Kconfig b/drivers/phy/amlogic/Kconfig index cb8f4501652b..ef3625cd25bb 100644 --- a/drivers/phy/amlogic/Kconfig +++ b/drivers/phy/amlogic/Kconfig @@ -18,7 +18,6 @@ config PHY_MESON_GXL_USB2 default ARCH_MESON depends on OF && (ARCH_MESON || COMPILE_TEST) depends on USB_SUPPORT - select USB_COMMON select GENERIC_PHY select REGMAP_MMIO help diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index a92a3fd51e16..f062fc7f0a3a 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -20,7 +20,6 @@ #include #include #include -#include /* bits [31:27] are read-only */ #define U2P_R0 0x0 @@ -254,18 +253,8 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev) if (IS_ERR(base)) return PTR_ERR(base); - switch (of_usb_get_dr_mode_by_phy(dev->of_node, -1)) { - case USB_DR_MODE_PERIPHERAL: - priv->mode = PHY_MODE_USB_DEVICE; - break; - case USB_DR_MODE_OTG: - priv->mode = PHY_MODE_USB_OTG; - break; - case USB_DR_MODE_HOST: - default: - priv->mode = PHY_MODE_USB_HOST; - break; - } + /* start in host mode */ + priv->mode = PHY_MODE_USB_HOST; priv->regmap = devm_regmap_init_mmio(dev, base, &phy_meson_gxl_usb2_regmap_conf); From ae91a799fb3cbc6e07718da97b40eb75f782dbaf Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 28 Jan 2018 21:22:45 +0100 Subject: [PATCH 31/56] phy: amlogic: phy-meson-gxl-usb2: rename some of the U2P_R2 registers The U2P_R2 register provides "test mode" functionality for bits 17:0. These are only used during SoC development and should be left untouched on production SoC versions. Rename these register definitions to indicate that these are for "test mode" only. While here, also merge the definitions for U2P_R2_DATA_IN_MASK and U2P_R2_DATA_IN_EN_MASK (bits 0:7) because Amlogic's internal documentation suggests that these bits belong together. The old definition was not taken from the documentation but rather from a struct definition in the Amlogic GPL kernel sources. No functional changes. Suggested-by: Yixun Lan Signed-off-by: Martin Blumenstingl Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/phy-meson-gxl-usb2.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index f062fc7f0a3a..9f9b5414b97a 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -71,12 +71,11 @@ /* bits [31:14] are read-only */ #define U2P_R2 0x8 - #define U2P_R2_DATA_IN_MASK GENMASK(3, 0) - #define U2P_R2_DATA_IN_EN_MASK GENMASK(7, 4) - #define U2P_R2_ADDR_MASK GENMASK(11, 8) - #define U2P_R2_DATA_OUT_SEL BIT(12) - #define U2P_R2_CLK BIT(13) - #define U2P_R2_DATA_OUT_MASK GENMASK(17, 14) + #define U2P_R2_TESTDATA_IN_MASK GENMASK(7, 0) + #define U2P_R2_TESTADDR_MASK GENMASK(11, 8) + #define U2P_R2_TESTDATA_OUT_SEL BIT(12) + #define U2P_R2_TESTCLK BIT(13) + #define U2P_R2_TESTDATA_OUT_MASK GENMASK(17, 14) #define U2P_R2_ACA_PIN_RANGE_C BIT(18) #define U2P_R2_ACA_PIN_RANGE_B BIT(19) #define U2P_R2_ACA_PIN_RANGE_A BIT(20) From d7119224bfe6e8efbf821a52db7da9530d790f07 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Fri, 19 Jan 2018 17:25:41 +0800 Subject: [PATCH 32/56] phy: allwinner: sun4i-usb: poll vbus changes on A23/A33 when driving VBUS The AXP223 PMIC, like the AXP221, does not generate VBUS change interrupts when N_VBUSEN is used to drive VBUS for the OTG port on the board. This was not noticed until recently, as most A23/A33 boards use a GPIO pin that does not support interrupts for OTG ID detection. This forces the driver to use polling. However the A33-OlinuXino uses a pin that does support interrupts, so the driver uses them. However the VBUS interrupt never fires, and the driver never gets to update the VBUS status. This results in musb timing out waiting for VBUS to rise. This was worked around for the AXP221 by resorting to polling changes in commit 91d96f06a760 ("phy-sun4i-usb: Add workaround for missing Vbus det interrupts on A31"). This patch adds the A23 and A33 to the list of SoCs that need the workaround. Fixes: fc1f45ed3043 ("phy-sun4i-usb: Add support for the usb-phys on the sun8i-a33 SoC") Fixes: 123dfdbcfaf5 ("phy-sun4i-usb: Add support for the usb-phys on the sun8i-a23 SoC") Cc: # 4.3.x: 68dbc2ce77bb phy-sun4i-usb: Use of_match_node to get model specific config data Cc: # 4.3.x: 5cf700ac9d50 phy: phy-sun4i-usb: Fix optional gpios failing probe Cc: # 4.3.x: 04e59a0211ff phy-sun4i-usb: Fix irq free conditions to match request conditions Cc: # 4.3.x: 91d96f06a760 phy-sun4i-usb: Add workaround for missing Vbus det interrupts on A31 Cc: # 4.3.x Signed-off-by: Chen-Yu Tsai Acked-by: Maxime Ripard Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/allwinner/phy-sun4i-usb.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c index bee798892b21..d4dcd39b8d76 100644 --- a/drivers/phy/allwinner/phy-sun4i-usb.c +++ b/drivers/phy/allwinner/phy-sun4i-usb.c @@ -411,11 +411,13 @@ static bool sun4i_usb_phy0_poll(struct sun4i_usb_phy_data *data) return true; /* - * The A31 companion pmic (axp221) does not generate vbus change - * interrupts when the board is driving vbus, so we must poll + * The A31/A23/A33 companion pmics (AXP221/AXP223) do not + * generate vbus change interrupts when the board is driving + * vbus using the N_VBUSEN pin on the pmic, so we must poll * when using the pmic for vbus-det _and_ we're driving vbus. */ - if (data->cfg->type == sun6i_a31_phy && + if ((data->cfg->type == sun6i_a31_phy || + data->cfg->type == sun8i_a33_phy) && data->vbus_power_supply && data->phys[0].regulator_on) return true; @@ -886,7 +888,7 @@ static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = { static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = { .num_phys = 2, - .type = sun4i_a10_phy, + .type = sun6i_a31_phy, .disc_thresh = 3, .phyctl_offset = REG_PHYCTL_A10, .dedicated_clocks = true, From 124380cb0e7a5fb704a81d135e5b7b4904c1ef95 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Fri, 23 Feb 2018 00:40:11 +0300 Subject: [PATCH 33/56] phy: lpc18xx-usb-otg: error handling in lpc18xx_usb_otg_phy_power_on() If regmap_update_bits() fails in lpc18xx_usb_otg_phy_power_on(), lpc->clk is left enabled. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-lpc18xx-usb-otg.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/phy/phy-lpc18xx-usb-otg.c b/drivers/phy/phy-lpc18xx-usb-otg.c index 3b7a71eb5b7e..7de280a45421 100644 --- a/drivers/phy/phy-lpc18xx-usb-otg.c +++ b/drivers/phy/phy-lpc18xx-usb-otg.c @@ -60,8 +60,14 @@ static int lpc18xx_usb_otg_phy_power_on(struct phy *phy) return ret; /* The bit in CREG is cleared to enable the PHY */ - return regmap_update_bits(lpc->reg, LPC18XX_CREG_CREG0, + ret = regmap_update_bits(lpc->reg, LPC18XX_CREG_CREG0, LPC18XX_CREG_CREG0_USB0PHY, 0); + if (ret) { + clk_disable(lpc->clk); + return ret; + } + + return 0; } static int lpc18xx_usb_otg_phy_power_off(struct phy *phy) From 4036325609abf29f0dfdffb6e598c56645820f4e Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Mon, 12 Mar 2018 13:25:38 +0800 Subject: [PATCH 34/56] phy: phy-mtk-tphy: keep default value of mcu_bus_ck_gate_en The default value of mcu_bus_ck_gate_en is 1, if clear it, will prevent system to enter deep idle mode, so keep its default value and without affecting PCIe function. Signed-off-by: Chunfeng Yun Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/mediatek/phy-mtk-tphy.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index 1e96d0740ef5..6073c25eb3f2 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -688,8 +688,7 @@ static void pcie_phy_instance_power_on(struct mtk_tphy *tphy, u32 tmp; tmp = readl(bank->chip + U3P_U3_CHIP_GPIO_CTLD); - tmp &= ~(P3C_FORCE_IP_SW_RST | P3C_MCU_BUS_CK_GATE_EN | - P3C_REG_IP_SW_RST); + tmp &= ~(P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST); writel(tmp, bank->chip + U3P_U3_CHIP_GPIO_CTLD); tmp = readl(bank->chip + U3P_U3_CHIP_GPIO_CTLE); From 8833ebf4f8530834ff8f95f309145f5e2da02999 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Mon, 12 Mar 2018 13:25:39 +0800 Subject: [PATCH 35/56] phy: phy-mtk-tphy: add configurable parameters for slew rate calibrate There are two parameters, ref_clk and coefficient, for U2 slew rate calibrate which may vary on different SoCs, here allow them to be configurable Signed-off-by: Chunfeng Yun Reviewed-by: Matthias Brugger Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/mediatek/phy-mtk-tphy.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index 6073c25eb3f2..38c281b5abbb 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -306,6 +306,8 @@ struct mtk_tphy { const struct mtk_phy_pdata *pdata; struct mtk_phy_instance **phys; int nphys; + int src_ref_clk; /* MHZ, reference clock for slew rate calibrate */ + int src_coef; /* coefficient for slew rate calibrate */ }; static void hs_slew_rate_calibrate(struct mtk_tphy *tphy, @@ -360,16 +362,17 @@ static void hs_slew_rate_calibrate(struct mtk_tphy *tphy, writel(tmp, fmreg + U3P_U2FREQ_FMMONR1); if (fm_out) { - /* ( 1024 / FM_OUT ) x reference clock frequency x 0.028 */ - tmp = U3P_FM_DET_CYCLE_CNT * U3P_REF_CLK * U3P_SLEW_RATE_COEF; - tmp /= fm_out; + /* ( 1024 / FM_OUT ) x reference clock frequency x coef */ + tmp = tphy->src_ref_clk * tphy->src_coef; + tmp = (tmp * U3P_FM_DET_CYCLE_CNT) / fm_out; calibration_val = DIV_ROUND_CLOSEST(tmp, U3P_SR_COEF_DIVISOR); } else { /* if FM detection fail, set default value */ calibration_val = 4; } - dev_dbg(tphy->dev, "phy:%d, fm_out:%d, calib:%d\n", - instance->index, fm_out, calibration_val); + dev_dbg(tphy->dev, "phy:%d, fm_out:%d, calib:%d (clk:%d, coef:%d)\n", + instance->index, fm_out, calibration_val, + tphy->src_ref_clk, tphy->src_coef); /* set HS slew rate */ tmp = readl(com + U3P_USBPHYACR5); @@ -1041,6 +1044,13 @@ static int mtk_tphy_probe(struct platform_device *pdev) tphy->u3phya_ref = NULL; } + tphy->src_ref_clk = U3P_REF_CLK; + tphy->src_coef = U3P_SLEW_RATE_COEF; + /* update parameters of slew rate calibrate if exist */ + device_property_read_u32(dev, "mediatek,src-ref-clk-mhz", + &tphy->src_ref_clk); + device_property_read_u32(dev, "mediatek,src-coef", &tphy->src_coef); + port = 0; for_each_child_of_node(np, child_np) { struct mtk_phy_instance *instance; From c55fbcb8cf6b3653103f046232ada503e482b57d Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Mon, 12 Mar 2018 13:25:40 +0800 Subject: [PATCH 36/56] dt-bindings: phy-mtk-tphy: add properties for U2 slew rate calibrate Add two properties of ref_clk and coefficient used by U2 slew rate calibrate which may vary on different SoCs Signed-off-by: Chunfeng Yun Reviewed-by: Matthias Brugger Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt b/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt index 41e09ed2ca70..0d34b2b4a6b7 100644 --- a/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt +++ b/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt @@ -27,6 +27,10 @@ Optional properties (controller (parent) node): - reg : offset and length of register shared by multiple ports, exclude port's private register. It is needed on mt2701 and mt8173, but not on mt2712. + - mediatek,src-ref-clk-mhz : frequency of reference clock for slew rate + calibrate + - mediatek,src-coef : coefficient for slew rate calibrate, depends on + SoC process Required properties (port (child) node): - reg : address and length of the register set for the port. From ae3f672cab5d1fef9fc4c6436e9d7e347eba0b13 Mon Sep 17 00:00:00 2001 From: Alexander Monakov Date: Sun, 4 Mar 2018 21:18:07 +0300 Subject: [PATCH 37/56] phy: berlin-usb: adjust USB_PHY_RX_CTRL init flags Make the value written into the USB_PHY_RX_CTRL configuration register match 0xAA79 value written by manufacturer-supplied kernels for Sony NSZ-GS7 (Berlin2 SoC), Google Chromecast and Valve Steam Link (BG2CD). This fixes timeouts communicating to the internal hub on Steam Link. Cc: Kishon Vijay Abraham I Cc: Antoine Tenart Signed-off-by: Alexander Monakov Reviewed-by: Matthias Brugger Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/marvell/phy-berlin-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/marvell/phy-berlin-usb.c b/drivers/phy/marvell/phy-berlin-usb.c index 2017751ede26..8f2b5cae360f 100644 --- a/drivers/phy/marvell/phy-berlin-usb.c +++ b/drivers/phy/marvell/phy-berlin-usb.c @@ -127,7 +127,7 @@ static int phy_berlin_usb_power_on(struct phy *phy) writel(V2I_VCO_RATIO(0x5) | R_ROTATE_0 | ANA_TEST_DC_CTRL(0x5), priv->base + USB_PHY_ANALOG); writel(PHASE_FREEZE_DLY_4_CL | ACK_LENGTH_16_CL | SQ_LENGTH_12 | - DISCON_THRESHOLD_260 | SQ_THRESHOLD(0xa) | LPF_COEF(0x2) | + DISCON_THRESHOLD_270 | SQ_THRESHOLD(0xa) | LPF_COEF(0x2) | INTPL_CUR_30, priv->base + USB_PHY_RX_CTRL); writel(TX_VDD12_13 | TX_OUT_AMP(0x3), priv->base + USB_PHY_TX_CTRL1); From 324e46cee18739efbbed49b30a9100cb7bd0d35e Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 19:46:59 +0100 Subject: [PATCH 38/56] dt-bindings: phy: Add support for the USB3 PHY on Amlogic Meson GXL SoCs Amlogic Meson GXL SoCs use a dwc3 controller with two (GXM - a variant for GXL, has three) USB2 ports. The first USB2 port supports host and peripheral (also called "device") mode. While the dwc3 controller has no USB3 port enabled we still need the USB3 PHY to be initialized. Otherwise high-speed USB transfers (for example with a USB flash drive) may time out (most often seen on boards with mainline u-boot, where the bootloader does not initialize the USB3 PHY registers). Signed-off-by: Martin Blumenstingl Reviewed-by: Rob Herring Tested-by: Yixun Lan Tested-by: Neil Armstrong Signed-off-by: Kishon Vijay Abraham I --- .../bindings/phy/meson-gxl-usb3-phy.txt | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt diff --git a/Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt b/Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt new file mode 100644 index 000000000000..114947e1de3d --- /dev/null +++ b/Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt @@ -0,0 +1,31 @@ +* Amlogic Meson GXL and GXM USB3 PHY and OTG detection binding + +Required properties: +- compatible: Should be "amlogic,meson-gxl-usb3-phy" +- #phys-cells: must be 0 (see phy-bindings.txt in this directory) +- reg: The base address and length of the registers +- interrupts: the interrupt specifier for the OTG detection +- clocks: phandles to the clocks for + - the USB3 PHY + - and peripheral mode/OTG detection +- clock-names: must contain "phy" and "peripheral" +- resets: phandle to the reset lines for: + - the USB3 PHY and + - peripheral mode/OTG detection +- reset-names: must contain "phy" and "peripheral" + +Optional properties: +- phy-supply: see phy-bindings.txt in this directory + + +Example: + usb3_phy0: phy@78080 { + compatible = "amlogic,meson-gxl-usb3-phy"; + #phy-cells = <0>; + reg = <0x0 0x78080 0x0 0x20>; + interrupts = ; + clocks = <&clkc CLKID_USB_OTG>, <&clkc_AO CLKID_AO_CEC_32K>; + clock-names = "phy", "peripheral"; + resets = <&reset RESET_USB_OTG>, <&reset RESET_USB_OTG>; + reset-names = "phy", "peripheral"; + }; From 115de9fd682ccdc6b7c3142287339dbada7a7807 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 3 Mar 2018 19:47:00 +0100 Subject: [PATCH 39/56] phy: amlogic: add USB3 PHY support for Meson GXL and GXM This adds a new driver for the USB3 PHY found on Meson GXL and GXM SoCs (both SoCs are using the same USB PHY register layout). Unfortunately there is no documentation for this PHY in the public S905X datasheet (published for example by Khadas). What we know so far about this PHY: - even though the Meson GXL and GXM SoCs do not expose an USB3 port (the dwc3 controller only has USB2 ports enabled) we need to initialize the USB3 PHY (specifically USB_R1_U3H_FLADJ_30MHZ_REG_MASK). Without this initialization high-speed USB devices (especially USB hard disks and thumb drives, slower devices like mice do not seem to be affected) - on some boards the USB3 PHY starts in "device mode" - we want to bring it into a known state (by switching it to host mode for now). - it is responsible for the OTG detection and for switching the first USB2 PHY between host and peripheral (aka device) mode. an interrupt can be used to detect changes between host and device mode. There are five inputs to this register area: - the clock and reset line for the USB3 PHY itself - the clock and reset line for the peripheral mode and OTG detection logic (on the GXL and GXM SoCs these are the same clock and reset line as for the USB3 PHY itself, but Amlogic sees this as two different components - even though they share the same register space - so they have to be passed individually to allow specifying different inputs on other SoCs if needed) - the interrupt for the OTG detection logic The whole OTG detection logic is not implemented yet. Signed-off-by: Martin Blumenstingl Tested-by: Yixun Lan Tested-by: Neil Armstrong Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/amlogic/Kconfig | 12 + drivers/phy/amlogic/Makefile | 1 + drivers/phy/amlogic/phy-meson-gxl-usb3.c | 282 +++++++++++++++++++++++ 3 files changed, 295 insertions(+) create mode 100644 drivers/phy/amlogic/phy-meson-gxl-usb3.c diff --git a/drivers/phy/amlogic/Kconfig b/drivers/phy/amlogic/Kconfig index ef3625cd25bb..23fe1cda2f70 100644 --- a/drivers/phy/amlogic/Kconfig +++ b/drivers/phy/amlogic/Kconfig @@ -24,3 +24,15 @@ config PHY_MESON_GXL_USB2 Enable this to support the Meson USB2 PHYs found in Meson GXL and GXM SoCs. If unsure, say N. + +config PHY_MESON_GXL_USB3 + tristate "Meson GXL and GXM USB3 PHY drivers" + default ARCH_MESON + depends on OF && (ARCH_MESON || COMPILE_TEST) + depends on USB_SUPPORT + select GENERIC_PHY + select REGMAP_MMIO + help + Enable this to support the Meson USB3 PHY and OTG detection + IP block found in Meson GXL and GXM SoCs. + If unsure, say N. diff --git a/drivers/phy/amlogic/Makefile b/drivers/phy/amlogic/Makefile index cfdc98715c30..4fd8848c194d 100644 --- a/drivers/phy/amlogic/Makefile +++ b/drivers/phy/amlogic/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_PHY_MESON8B_USB2) += phy-meson8b-usb2.o obj-$(CONFIG_PHY_MESON_GXL_USB2) += phy-meson-gxl-usb2.o +obj-$(CONFIG_PHY_MESON_GXL_USB3) += phy-meson-gxl-usb3.o diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb3.c b/drivers/phy/amlogic/phy-meson-gxl-usb3.c new file mode 100644 index 000000000000..d37d94ddf9c0 --- /dev/null +++ b/drivers/phy/amlogic/phy-meson-gxl-usb3.c @@ -0,0 +1,282 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Meson GXL USB3 PHY and OTG mode detection driver + * + * Copyright (C) 2018 Martin Blumenstingl + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define USB_R0 0x00 + #define USB_R0_P30_FSEL_MASK GENMASK(5, 0) + #define USB_R0_P30_PHY_RESET BIT(6) + #define USB_R0_P30_TEST_POWERDOWN_HSP BIT(7) + #define USB_R0_P30_TEST_POWERDOWN_SSP BIT(8) + #define USB_R0_P30_ACJT_LEVEL_MASK GENMASK(13, 9) + #define USB_R0_P30_TX_BOOST_LEVEL_MASK GENMASK(16, 14) + #define USB_R0_P30_LANE0_TX2RX_LOOPBACK BIT(17) + #define USB_R0_P30_LANE0_EXT_PCLK_REQ BIT(18) + #define USB_R0_P30_PCS_RX_LOS_MASK_VAL_MASK GENMASK(28, 19) + #define USB_R0_U2D_SS_SCALEDOWN_MODE_MASK GENMASK(30, 29) + #define USB_R0_U2D_ACT BIT(31) + +#define USB_R1 0x04 + #define USB_R1_U3H_BIGENDIAN_GS BIT(0) + #define USB_R1_U3H_PME_ENABLE BIT(1) + #define USB_R1_U3H_HUB_PORT_OVERCURRENT_MASK GENMASK(6, 2) + #define USB_R1_U3H_HUB_PORT_PERM_ATTACH_MASK GENMASK(11, 7) + #define USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK GENMASK(15, 12) + #define USB_R1_U3H_HOST_U3_PORT_DISABLE BIT(16) + #define USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT BIT(17) + #define USB_R1_U3H_HOST_MSI_ENABLE BIT(18) + #define USB_R1_U3H_FLADJ_30MHZ_REG_MASK GENMASK(24, 19) + #define USB_R1_P30_PCS_TX_SWING_FULL_MASK GENMASK(31, 25) + +#define USB_R2 0x08 + #define USB_R2_P30_CR_DATA_IN_MASK GENMASK(15, 0) + #define USB_R2_P30_CR_READ BIT(16) + #define USB_R2_P30_CR_WRITE BIT(17) + #define USB_R2_P30_CR_CAP_ADDR BIT(18) + #define USB_R2_P30_CR_CAP_DATA BIT(19) + #define USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK GENMASK(25, 20) + #define USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK GENMASK(31, 26) + +#define USB_R3 0x0c + #define USB_R3_P30_SSC_ENABLE BIT(0) + #define USB_R3_P30_SSC_RANGE_MASK GENMASK(3, 1) + #define USB_R3_P30_SSC_REF_CLK_SEL_MASK GENMASK(12, 4) + #define USB_R3_P30_REF_SSP_EN BIT(13) + #define USB_R3_P30_LOS_BIAS_MASK GENMASK(18, 16) + #define USB_R3_P30_LOS_LEVEL_MASK GENMASK(23, 19) + #define USB_R3_P30_MPLL_MULTIPLIER_MASK GENMASK(30, 24) + +#define USB_R4 0x10 + #define USB_R4_P21_PORT_RESET_0 BIT(0) + #define USB_R4_P21_SLEEP_M0 BIT(1) + #define USB_R4_MEM_PD_MASK GENMASK(3, 2) + #define USB_R4_P21_ONLY BIT(4) + +#define USB_R5 0x14 + #define USB_R5_ID_DIG_SYNC BIT(0) + #define USB_R5_ID_DIG_REG BIT(1) + #define USB_R5_ID_DIG_CFG_MASK GENMASK(3, 2) + #define USB_R5_ID_DIG_EN_0 BIT(4) + #define USB_R5_ID_DIG_EN_1 BIT(5) + #define USB_R5_ID_DIG_CURR BIT(6) + #define USB_R5_ID_DIG_IRQ BIT(7) + #define USB_R5_ID_DIG_TH_MASK GENMASK(15, 8) + #define USB_R5_ID_DIG_CNT_MASK GENMASK(23, 16) + +/* read-only register */ +#define USB_R6 0x18 + #define USB_R6_P30_CR_DATA_OUT_MASK GENMASK(15, 0) + #define USB_R6_P30_CR_ACK BIT(16) + +struct phy_meson_gxl_usb3_priv { + struct regmap *regmap; + enum phy_mode mode; + struct clk *clk_phy; + struct clk *clk_peripheral; + struct reset_control *reset; +}; + +static const struct regmap_config phy_meson_gxl_usb3_regmap_conf = { + .reg_bits = 8, + .val_bits = 32, + .reg_stride = 4, + .max_register = USB_R6, +}; + +static int phy_meson_gxl_usb3_power_on(struct phy *phy) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_0, + USB_R5_ID_DIG_EN_0); + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_1, + USB_R5_ID_DIG_EN_1); + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_TH_MASK, + FIELD_PREP(USB_R5_ID_DIG_TH_MASK, 0xff)); + + return 0; +} + +static int phy_meson_gxl_usb3_power_off(struct phy *phy) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_0, 0); + regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_1, 0); + + return 0; +} + +static int phy_meson_gxl_usb3_set_mode(struct phy *phy, enum phy_mode mode) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + + switch (mode) { + case PHY_MODE_USB_HOST: + regmap_update_bits(priv->regmap, USB_R0, USB_R0_U2D_ACT, 0); + regmap_update_bits(priv->regmap, USB_R4, USB_R4_P21_SLEEP_M0, + 0); + break; + + case PHY_MODE_USB_DEVICE: + regmap_update_bits(priv->regmap, USB_R0, USB_R0_U2D_ACT, + USB_R0_U2D_ACT); + regmap_update_bits(priv->regmap, USB_R4, USB_R4_P21_SLEEP_M0, + USB_R4_P21_SLEEP_M0); + break; + + default: + dev_err(&phy->dev, "unsupported PHY mode %d\n", mode); + return -EINVAL; + } + + priv->mode = mode; + + return 0; +} + +static int phy_meson_gxl_usb3_init(struct phy *phy) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + int ret; + + ret = reset_control_reset(priv->reset); + if (ret) + goto err; + + ret = clk_prepare_enable(priv->clk_phy); + if (ret) + goto err; + + ret = clk_prepare_enable(priv->clk_peripheral); + if (ret) + goto err_disable_clk_phy; + + ret = phy_meson_gxl_usb3_set_mode(phy, priv->mode); + if (ret) + goto err_disable_clk_peripheral; + + regmap_update_bits(priv->regmap, USB_R1, + USB_R1_U3H_FLADJ_30MHZ_REG_MASK, + FIELD_PREP(USB_R1_U3H_FLADJ_30MHZ_REG_MASK, 0x20)); + + return 0; + +err_disable_clk_peripheral: + clk_disable_unprepare(priv->clk_peripheral); +err_disable_clk_phy: + clk_disable_unprepare(priv->clk_phy); +err: + return ret; +} + +static int phy_meson_gxl_usb3_exit(struct phy *phy) +{ + struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); + + clk_disable_unprepare(priv->clk_peripheral); + clk_disable_unprepare(priv->clk_phy); + + return 0; +} + +static const struct phy_ops phy_meson_gxl_usb3_ops = { + .power_on = phy_meson_gxl_usb3_power_on, + .power_off = phy_meson_gxl_usb3_power_off, + .set_mode = phy_meson_gxl_usb3_set_mode, + .init = phy_meson_gxl_usb3_init, + .exit = phy_meson_gxl_usb3_exit, + .owner = THIS_MODULE, +}; + +static int phy_meson_gxl_usb3_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct phy_meson_gxl_usb3_priv *priv; + struct resource *res; + struct phy *phy; + struct phy_provider *phy_provider; + void __iomem *base; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + priv->regmap = devm_regmap_init_mmio(dev, base, + &phy_meson_gxl_usb3_regmap_conf); + if (IS_ERR(priv->regmap)) + return PTR_ERR(priv->regmap); + + priv->clk_phy = devm_clk_get(dev, "phy"); + if (IS_ERR(priv->clk_phy)) + return PTR_ERR(priv->clk_phy); + + priv->clk_peripheral = devm_clk_get(dev, "peripheral"); + if (IS_ERR(priv->clk_peripheral)) + return PTR_ERR(priv->clk_peripheral); + + priv->reset = devm_reset_control_array_get_shared(dev); + if (IS_ERR(priv->reset)) + return PTR_ERR(priv->reset); + + /* + * default to host mode as hardware defaults and/or boot-loader + * behavior can result in this PHY starting up in device mode. this + * default and the initialization in phy_meson_gxl_usb3_init ensure + * that we reproducibly start in a known mode on all devices. + */ + priv->mode = PHY_MODE_USB_HOST; + + phy = devm_phy_create(dev, np, &phy_meson_gxl_usb3_ops); + if (IS_ERR(phy)) { + ret = PTR_ERR(phy); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to create PHY\n"); + + return ret; + } + + phy_set_drvdata(phy, priv); + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct of_device_id phy_meson_gxl_usb3_of_match[] = { + { .compatible = "amlogic,meson-gxl-usb3-phy", }, + { }, +}; +MODULE_DEVICE_TABLE(of, phy_meson_gxl_usb3_of_match); + +static struct platform_driver phy_meson_gxl_usb3_driver = { + .probe = phy_meson_gxl_usb3_probe, + .driver = { + .name = "phy-meson-gxl-usb3", + .of_match_table = phy_meson_gxl_usb3_of_match, + }, +}; +module_platform_driver(phy_meson_gxl_usb3_driver); + +MODULE_AUTHOR("Martin Blumenstingl "); +MODULE_DESCRIPTION("Meson GXL USB3 PHY and OTG detection driver"); +MODULE_LICENSE("GPL v2"); From bb0e500bedb8aaab986878aa90b99582d201576c Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 6 Mar 2018 20:18:49 +0900 Subject: [PATCH 40/56] phy: add 'depends on HAS_IOMEM' to fix unmet dependency These configs select MFD_SYSCON, but do not depend on HAS_IOMEM. Compile testing on architecture without HAS_IOMEM causes "unmet direct dependencies" in Kconfig phase. Detected by "make ARCH=score allyesconfig". Signed-off-by: Masahiro Yamada Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/hisilicon/Kconfig | 1 + drivers/phy/ralink/Kconfig | 1 + drivers/phy/rockchip/Kconfig | 1 + 3 files changed, 3 insertions(+) diff --git a/drivers/phy/hisilicon/Kconfig b/drivers/phy/hisilicon/Kconfig index d9afe2b12827..5458e6c9b230 100644 --- a/drivers/phy/hisilicon/Kconfig +++ b/drivers/phy/hisilicon/Kconfig @@ -4,6 +4,7 @@ config PHY_HI6220_USB tristate "hi6220 USB PHY support" depends on (ARCH_HISI && ARM64) || COMPILE_TEST + depends on HAS_IOMEM select GENERIC_PHY select MFD_SYSCON help diff --git a/drivers/phy/ralink/Kconfig b/drivers/phy/ralink/Kconfig index b17635b407bc..14fd219535ef 100644 --- a/drivers/phy/ralink/Kconfig +++ b/drivers/phy/ralink/Kconfig @@ -4,6 +4,7 @@ config PHY_RALINK_USB tristate "Ralink USB PHY driver" depends on RALINK || COMPILE_TEST + depends on HAS_IOMEM select GENERIC_PHY select MFD_SYSCON help diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig index f5325b2b679e..0e15119ddfc6 100644 --- a/drivers/phy/rockchip/Kconfig +++ b/drivers/phy/rockchip/Kconfig @@ -29,6 +29,7 @@ config PHY_ROCKCHIP_INNO_USB2 config PHY_ROCKCHIP_PCIE tristate "Rockchip PCIe PHY Driver" depends on (ARCH_ROCKCHIP && OF) || COMPILE_TEST + depends on HAS_IOMEM select GENERIC_PHY select MFD_SYSCON help From 194303d60b68a8038979560e5f4ca493bbb3cf37 Mon Sep 17 00:00:00 2001 From: Amelie Delaunay Date: Fri, 2 Mar 2018 15:56:24 +0100 Subject: [PATCH 41/56] dt-bindings: phy: add support for STM32 USB PHY Controller (USBPHYC) This patch adds the device tree bindings description for STM32 USBPHYC (USB PHY Controller). Signed-off-by: Amelie Delaunay Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- .../bindings/phy/phy-stm32-usbphyc.txt | 73 +++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt diff --git a/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt b/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt new file mode 100644 index 000000000000..725ae71ae653 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt @@ -0,0 +1,73 @@ +STMicroelectronics STM32 USB HS PHY controller + +The STM32 USBPHYC block contains a dual port High Speed UTMI+ PHY and a UTMI +switch. It controls PHY configuration and status, and the UTMI+ switch that +selects either OTG or HOST controller for the second PHY port. It also sets +PLL configuration. + +USBPHYC + |_ PLL + | + |_ PHY port#1 _________________ HOST controller + | _ | + | / 1|________________| + |_ PHY port#2 ----| |________________ + | \_0| | + |_ UTMI switch_______| OTG controller + + +Phy provider node +================= + +Required properties: +- compatible: must be "st,stm32mp1-usbphyc" +- reg: address and length of the usb phy control register set +- clocks: phandle + clock specifier for the PLL phy clock +- #address-cells: number of address cells for phys sub-nodes, must be <1> +- #size-cells: number of size cells for phys sub-nodes, must be <0> + +Optional properties: +- assigned-clocks: phandle + clock specifier for the PLL phy clock +- assigned-clock-parents: the PLL phy clock parent +- resets: phandle + reset specifier + +Required nodes: one sub-node per port the controller provides. + +Phy sub-nodes +============== + +Required properties: +- reg: phy port index +- phy-supply: phandle to the regulator providing 3V3 power to the PHY, + see phy-bindings.txt in the same directory. +- vdda1v1-supply: phandle to the regulator providing 1V1 power to the PHY +- vdda1v8-supply: phandle to the regulator providing 1V8 power to the PHY +- #phy-cells: see phy-bindings.txt in the same directory, must be <0> for PHY + port#1 and must be <1> for PHY port#2, to select USB controller + + +Example: + usbphyc: usb-phy@5a006000 { + compatible = "st,stm32mp1-usbphyc"; + reg = <0x5a006000 0x1000>; + clocks = <&rcc_clk USBPHY_K>; + resets = <&rcc_rst USBPHY_R>; + #address-cells = <1>; + #size-cells = <0>; + + usbphyc_port0: usb-phy@0 { + reg = <0>; + phy-supply = <&vdd_usb>; + vdda1v1-supply = <®11>; + vdda1v8-supply = <®18> + #phy-cells = <0>; + }; + + usbphyc_port1: usb-phy@1 { + reg = <1>; + phy-supply = <&vdd_usb>; + vdda1v1-supply = <®11>; + vdda1v8-supply = <®18> + #phy-cells = <1>; + }; + }; From 94c358da3a0545205c6c6a50ae26141f1c73acfa Mon Sep 17 00:00:00 2001 From: Amelie Delaunay Date: Fri, 2 Mar 2018 15:56:25 +0100 Subject: [PATCH 42/56] phy: stm32: add support for STM32 USB PHY Controller (USBPHYC) This patch adds phy transceiver driver for STM32 USB PHY Controller (USBPHYC) that provides dual port High-Speed phy for OTG (single port) and EHCI/OHCI host controller (two ports). One port of the phy is shared between the two USB controllers through a UTMI+ switch. [fengguang.wu@intel.com: Make stm32_usbphyc_get_pll_params() to be static] Signed-off-by: Fengguang Wu Signed-off-by: Amelie Delaunay Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/st/Kconfig | 14 + drivers/phy/st/Makefile | 1 + drivers/phy/st/phy-stm32-usbphyc.c | 461 +++++++++++++++++++++++++++++ 3 files changed, 476 insertions(+) create mode 100644 drivers/phy/st/phy-stm32-usbphyc.c diff --git a/drivers/phy/st/Kconfig b/drivers/phy/st/Kconfig index 0814d3f87ec6..609719bdfa50 100644 --- a/drivers/phy/st/Kconfig +++ b/drivers/phy/st/Kconfig @@ -31,3 +31,17 @@ config PHY_STIH407_USB help Enable this support to enable the picoPHY device used by USB2 and USB3 controllers on STMicroelectronics STiH407 SoC families. + +config PHY_STM32_USBPHYC + tristate "STMicroelectronics STM32 USB HS PHY Controller driver" + depends on ARCH_STM32 || COMPILE_TEST + select GENERIC_PHY + help + Enable this to support the High-Speed USB transceivers that are part + of some STMicroelectronics STM32 SoCs. + + This driver controls the entire USB PHY block: the USB PHY controller + (USBPHYC) and the two 8-bit wide UTMI+ interfaces. First interface is + used by an HS USB Host controller, and the second one is shared + between an HS USB OTG controller and an HS USB Host controller, + selected by a USB switch. diff --git a/drivers/phy/st/Makefile b/drivers/phy/st/Makefile index e2adfe2166d2..c0091ad1fd48 100644 --- a/drivers/phy/st/Makefile +++ b/drivers/phy/st/Makefile @@ -2,3 +2,4 @@ obj-$(CONFIG_PHY_MIPHY28LP) += phy-miphy28lp.o obj-$(CONFIG_PHY_ST_SPEAR1310_MIPHY) += phy-spear1310-miphy.o obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) += phy-spear1340-miphy.o obj-$(CONFIG_PHY_STIH407_USB) += phy-stih407-usb.o +obj-$(CONFIG_PHY_STM32_USBPHYC) += phy-stm32-usbphyc.o diff --git a/drivers/phy/st/phy-stm32-usbphyc.c b/drivers/phy/st/phy-stm32-usbphyc.c new file mode 100644 index 000000000000..bc4e78a19c91 --- /dev/null +++ b/drivers/phy/st/phy-stm32-usbphyc.c @@ -0,0 +1,461 @@ +// SPDX-Licence-Identifier: GPL-2.0 +/* + * STMicroelectronics STM32 USB PHY Controller driver + * + * Copyright (C) 2018 STMicroelectronics + * Author(s): Amelie Delaunay . + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define STM32_USBPHYC_PLL 0x0 +#define STM32_USBPHYC_MISC 0x8 +#define STM32_USBPHYC_VERSION 0x3F4 + +/* STM32_USBPHYC_PLL bit fields */ +#define PLLNDIV GENMASK(6, 0) +#define PLLFRACIN GENMASK(25, 10) +#define PLLEN BIT(26) +#define PLLSTRB BIT(27) +#define PLLSTRBYP BIT(28) +#define PLLFRACCTL BIT(29) +#define PLLDITHEN0 BIT(30) +#define PLLDITHEN1 BIT(31) + +/* STM32_USBPHYC_MISC bit fields */ +#define SWITHOST BIT(0) + +/* STM32_USBPHYC_VERSION bit fields */ +#define MINREV GENMASK(3, 0) +#define MAJREV GENMASK(7, 4) + +static const char * const supplies_names[] = { + "vdda1v1", /* 1V1 */ + "vdda1v8", /* 1V8 */ +}; + +#define NUM_SUPPLIES ARRAY_SIZE(supplies_names) + +#define PLL_LOCK_TIME_US 100 +#define PLL_PWR_DOWN_TIME_US 5 +#define PLL_FVCO_MHZ 2880 +#define PLL_INFF_MIN_RATE_HZ 19200000 +#define PLL_INFF_MAX_RATE_HZ 38400000 +#define HZ_PER_MHZ 1000000L + +struct pll_params { + u8 ndiv; + u16 frac; +}; + +struct stm32_usbphyc_phy { + struct phy *phy; + struct stm32_usbphyc *usbphyc; + struct regulator_bulk_data supplies[NUM_SUPPLIES]; + u32 index; + bool active; +}; + +struct stm32_usbphyc { + struct device *dev; + void __iomem *base; + struct clk *clk; + struct reset_control *rst; + struct stm32_usbphyc_phy **phys; + int nphys; + int switch_setup; + bool pll_enabled; +}; + +static inline void stm32_usbphyc_set_bits(void __iomem *reg, u32 bits) +{ + writel_relaxed(readl_relaxed(reg) | bits, reg); +} + +static inline void stm32_usbphyc_clr_bits(void __iomem *reg, u32 bits) +{ + writel_relaxed(readl_relaxed(reg) & ~bits, reg); +} + +static void stm32_usbphyc_get_pll_params(u32 clk_rate, struct pll_params *pll_params) +{ + unsigned long long fvco, ndiv, frac; + + /* _ + * | FVCO = INFF*2*(NDIV + FRACT/2^16) when DITHER_DISABLE[1] = 1 + * | FVCO = 2880MHz + * < + * | NDIV = integer part of input bits to set the LDF + * |_FRACT = fractional part of input bits to set the LDF + * => PLLNDIV = integer part of (FVCO / (INFF*2)) + * => PLLFRACIN = fractional part of(FVCO / INFF*2) * 2^16 + * <=> PLLFRACIN = ((FVCO / (INFF*2)) - PLLNDIV) * 2^16 + */ + fvco = (unsigned long long)PLL_FVCO_MHZ * HZ_PER_MHZ; + + ndiv = fvco; + do_div(ndiv, (clk_rate * 2)); + pll_params->ndiv = (u8)ndiv; + + frac = fvco * (1 << 16); + do_div(frac, (clk_rate * 2)); + frac = frac - (ndiv * (1 << 16)); + pll_params->frac = (u16)frac; +} + +static int stm32_usbphyc_pll_init(struct stm32_usbphyc *usbphyc) +{ + struct pll_params pll_params; + u32 clk_rate = clk_get_rate(usbphyc->clk); + u32 ndiv, frac; + u32 usbphyc_pll; + + if ((clk_rate < PLL_INFF_MIN_RATE_HZ) || + (clk_rate > PLL_INFF_MAX_RATE_HZ)) { + dev_err(usbphyc->dev, "input clk freq (%dHz) out of range\n", + clk_rate); + return -EINVAL; + } + + stm32_usbphyc_get_pll_params(clk_rate, &pll_params); + ndiv = FIELD_PREP(PLLNDIV, pll_params.ndiv); + frac = FIELD_PREP(PLLFRACIN, pll_params.frac); + + usbphyc_pll = PLLDITHEN1 | PLLDITHEN0 | PLLSTRBYP | ndiv; + + if (pll_params.frac) + usbphyc_pll |= PLLFRACCTL | frac; + + writel_relaxed(usbphyc_pll, usbphyc->base + STM32_USBPHYC_PLL); + + dev_dbg(usbphyc->dev, "input clk freq=%dHz, ndiv=%lu, frac=%lu\n", + clk_rate, FIELD_GET(PLLNDIV, usbphyc_pll), + FIELD_GET(PLLFRACIN, usbphyc_pll)); + + return 0; +} + +static bool stm32_usbphyc_has_one_phy_active(struct stm32_usbphyc *usbphyc) +{ + int i; + + for (i = 0; i < usbphyc->nphys; i++) + if (usbphyc->phys[i]->active) + return true; + + return false; +} + +static int stm32_usbphyc_pll_enable(struct stm32_usbphyc *usbphyc) +{ + void __iomem *pll_reg = usbphyc->base + STM32_USBPHYC_PLL; + bool pllen = (readl_relaxed(pll_reg) & PLLEN); + int ret; + + /* Check if one phy port has already configured the pll */ + if (pllen && stm32_usbphyc_has_one_phy_active(usbphyc)) + return 0; + + if (pllen) { + stm32_usbphyc_clr_bits(pll_reg, PLLEN); + /* Wait for minimum width of powerdown pulse (ENABLE = Low) */ + udelay(PLL_PWR_DOWN_TIME_US); + } + + ret = stm32_usbphyc_pll_init(usbphyc); + if (ret) + return ret; + + stm32_usbphyc_set_bits(pll_reg, PLLEN); + + /* Wait for maximum lock time */ + udelay(PLL_LOCK_TIME_US); + + if (!(readl_relaxed(pll_reg) & PLLEN)) { + dev_err(usbphyc->dev, "PLLEN not set\n"); + return -EIO; + } + + return 0; +} + +static int stm32_usbphyc_pll_disable(struct stm32_usbphyc *usbphyc) +{ + void __iomem *pll_reg = usbphyc->base + STM32_USBPHYC_PLL; + + /* Check if other phy port active */ + if (stm32_usbphyc_has_one_phy_active(usbphyc)) + return 0; + + stm32_usbphyc_clr_bits(pll_reg, PLLEN); + /* Wait for minimum width of powerdown pulse (ENABLE = Low) */ + udelay(PLL_PWR_DOWN_TIME_US); + + if (readl_relaxed(pll_reg) & PLLEN) { + dev_err(usbphyc->dev, "PLL not reset\n"); + return -EIO; + } + + return 0; +} + +static int stm32_usbphyc_phy_init(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + struct stm32_usbphyc *usbphyc = usbphyc_phy->usbphyc; + int ret; + + ret = stm32_usbphyc_pll_enable(usbphyc); + if (ret) + return ret; + + usbphyc_phy->active = true; + + return 0; +} + +static int stm32_usbphyc_phy_exit(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + struct stm32_usbphyc *usbphyc = usbphyc_phy->usbphyc; + + usbphyc_phy->active = false; + + return stm32_usbphyc_pll_disable(usbphyc); +} + +static int stm32_usbphyc_phy_power_on(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + + return regulator_bulk_enable(NUM_SUPPLIES, usbphyc_phy->supplies); +} + +static int stm32_usbphyc_phy_power_off(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + + return regulator_bulk_disable(NUM_SUPPLIES, usbphyc_phy->supplies); +} + +static const struct phy_ops stm32_usbphyc_phy_ops = { + .init = stm32_usbphyc_phy_init, + .exit = stm32_usbphyc_phy_exit, + .power_on = stm32_usbphyc_phy_power_on, + .power_off = stm32_usbphyc_phy_power_off, + .owner = THIS_MODULE, +}; + +static void stm32_usbphyc_switch_setup(struct stm32_usbphyc *usbphyc, + u32 utmi_switch) +{ + if (!utmi_switch) + stm32_usbphyc_clr_bits(usbphyc->base + STM32_USBPHYC_MISC, + SWITHOST); + else + stm32_usbphyc_set_bits(usbphyc->base + STM32_USBPHYC_MISC, + SWITHOST); + usbphyc->switch_setup = utmi_switch; +} + +static struct phy *stm32_usbphyc_of_xlate(struct device *dev, + struct of_phandle_args *args) +{ + struct stm32_usbphyc *usbphyc = dev_get_drvdata(dev); + struct stm32_usbphyc_phy *usbphyc_phy = NULL; + struct device_node *phynode = args->np; + + int port = 0; + + for (port = 0; port < usbphyc->nphys; port++) { + if (phynode == usbphyc->phys[port]->phy->dev.of_node) { + usbphyc_phy = usbphyc->phys[port]; + break; + } + } + if (!usbphyc_phy) { + dev_err(dev, "failed to find phy\n"); + return ERR_PTR(-EINVAL); + } + + if (((usbphyc_phy->index == 0) && (args->args_count != 0)) || + ((usbphyc_phy->index == 1) && (args->args_count != 1))) { + dev_err(dev, "invalid number of cells for phy port%d\n", + usbphyc_phy->index); + return ERR_PTR(-EINVAL); + } + + /* Configure the UTMI switch for PHY port#2 */ + if (usbphyc_phy->index == 1) { + if (usbphyc->switch_setup < 0) { + stm32_usbphyc_switch_setup(usbphyc, args->args[0]); + } else { + if (args->args[0] != usbphyc->switch_setup) { + dev_err(dev, "phy port1 already used\n"); + return ERR_PTR(-EBUSY); + } + } + } + + return usbphyc_phy->phy; +} + +static int stm32_usbphyc_probe(struct platform_device *pdev) +{ + struct stm32_usbphyc *usbphyc; + struct device *dev = &pdev->dev; + struct device_node *child, *np = dev->of_node; + struct resource *res; + struct phy_provider *phy_provider; + u32 version; + int ret, port = 0; + + usbphyc = devm_kzalloc(dev, sizeof(*usbphyc), GFP_KERNEL); + if (!usbphyc) + return -ENOMEM; + usbphyc->dev = dev; + dev_set_drvdata(dev, usbphyc); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + usbphyc->base = devm_ioremap_resource(dev, res); + if (IS_ERR(usbphyc->base)) + return PTR_ERR(usbphyc->base); + + usbphyc->clk = devm_clk_get(dev, 0); + if (IS_ERR(usbphyc->clk)) { + ret = PTR_ERR(usbphyc->clk); + dev_err(dev, "clk get failed: %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(usbphyc->clk); + if (ret) { + dev_err(dev, "clk enable failed: %d\n", ret); + return ret; + } + + usbphyc->rst = devm_reset_control_get(dev, 0); + if (!IS_ERR(usbphyc->rst)) { + reset_control_assert(usbphyc->rst); + udelay(2); + reset_control_deassert(usbphyc->rst); + } + + usbphyc->switch_setup = -EINVAL; + usbphyc->nphys = of_get_child_count(np); + usbphyc->phys = devm_kcalloc(dev, usbphyc->nphys, + sizeof(*usbphyc->phys), GFP_KERNEL); + if (!usbphyc->phys) { + ret = -ENOMEM; + goto clk_disable; + } + + for_each_child_of_node(np, child) { + struct stm32_usbphyc_phy *usbphyc_phy; + struct phy *phy; + u32 index; + int i; + + phy = devm_phy_create(dev, child, &stm32_usbphyc_phy_ops); + if (IS_ERR(phy)) { + ret = PTR_ERR(phy); + if (ret != -EPROBE_DEFER) + dev_err(dev, + "failed to create phy%d: %d\n", i, ret); + goto put_child; + } + + usbphyc_phy = devm_kzalloc(dev, sizeof(*usbphyc_phy), + GFP_KERNEL); + if (!usbphyc_phy) { + ret = -ENOMEM; + goto put_child; + } + + for (i = 0; i < NUM_SUPPLIES; i++) + usbphyc_phy->supplies[i].supply = supplies_names[i]; + + ret = devm_regulator_bulk_get(&phy->dev, NUM_SUPPLIES, + usbphyc_phy->supplies); + if (ret) { + if (ret != -EPROBE_DEFER) + dev_err(&phy->dev, + "failed to get regulators: %d\n", ret); + goto put_child; + } + + ret = of_property_read_u32(child, "reg", &index); + if (ret || index > usbphyc->nphys) { + dev_err(&phy->dev, "invalid reg property: %d\n", ret); + goto put_child; + } + + usbphyc->phys[port] = usbphyc_phy; + phy_set_bus_width(phy, 8); + phy_set_drvdata(phy, usbphyc_phy); + + usbphyc->phys[port]->phy = phy; + usbphyc->phys[port]->usbphyc = usbphyc; + usbphyc->phys[port]->index = index; + usbphyc->phys[port]->active = false; + + port++; + } + + phy_provider = devm_of_phy_provider_register(dev, + stm32_usbphyc_of_xlate); + if (IS_ERR(phy_provider)) { + ret = PTR_ERR(phy_provider); + dev_err(dev, "failed to register phy provider: %d\n", ret); + goto clk_disable; + } + + version = readl_relaxed(usbphyc->base + STM32_USBPHYC_VERSION); + dev_info(dev, "registered rev:%lu.%lu\n", + FIELD_GET(MAJREV, version), FIELD_GET(MINREV, version)); + + return 0; + +put_child: + of_node_put(child); +clk_disable: + clk_disable_unprepare(usbphyc->clk); + + return ret; +} + +static int stm32_usbphyc_remove(struct platform_device *pdev) +{ + struct stm32_usbphyc *usbphyc = dev_get_drvdata(&pdev->dev); + + clk_disable_unprepare(usbphyc->clk); + + return 0; +} + +static const struct of_device_id stm32_usbphyc_of_match[] = { + { .compatible = "st,stm32mp1-usbphyc", }, + { }, +}; +MODULE_DEVICE_TABLE(of, stm32_usbphyc_of_match); + +static struct platform_driver stm32_usbphyc_driver = { + .probe = stm32_usbphyc_probe, + .remove = stm32_usbphyc_remove, + .driver = { + .of_match_table = stm32_usbphyc_of_match, + .name = "stm32-usbphyc", + } +}; +module_platform_driver(stm32_usbphyc_driver); + +MODULE_DESCRIPTION("STMicroelectronics STM32 USBPHYC driver"); +MODULE_AUTHOR("Amelie Delaunay "); +MODULE_LICENSE("GPL v2"); From b1ba68f33c0caa937032615833e3321d03d877b4 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 5 Mar 2018 14:32:43 +0900 Subject: [PATCH 43/56] dt-bindings: rcar-gen3-phy-usb2: Add bindings for r8a77965 This patch adds support for r8a77965 (R-Car M3-N). Signed-off-by: Yoshihiro Shimoda Reviewed-by: Geert Uytterhoeven Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt index 99b651b33110..dbd137c079e2 100644 --- a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt +++ b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt @@ -8,6 +8,8 @@ Required properties: SoC. "renesas,usb2-phy-r8a7796" if the device is a part of an R8A7796 SoC. + "renesas,usb2-phy-r8a77965" if the device is a part of an + R8A77965 SoC. "renesas,usb2-phy-r8a77995" if the device is a part of an R8A77995 SoC. "renesas,rcar-gen3-usb2-phy" for a generic R-Car Gen3 compatible device. From 44e42df6b91813c9d271044e35a7642402abf98c Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 5 Mar 2018 14:32:44 +0900 Subject: [PATCH 44/56] phy: rcar-gen3-usb2: Add support for r8a77965 This patch adds support for r8a77965 (R-Car M3-N). This SoC has dedicated pins. Signed-off-by: Yoshihiro Shimoda Reviewed-by: Geert Uytterhoeven Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/renesas/phy-rcar-gen3-usb2.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index 9c90e7d67e0a..fb8f05e39cf7 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -396,6 +396,10 @@ static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = { .compatible = "renesas,usb2-phy-r8a7796", .data = (void *)RCAR_GEN3_PHY_HAS_DEDICATED_PINS, }, + { + .compatible = "renesas,usb2-phy-r8a77965", + .data = (void *)RCAR_GEN3_PHY_HAS_DEDICATED_PINS, + }, { .compatible = "renesas,rcar-gen3-usb2-phy", }, From 0147b57e731f128d68469d8032d53c0da89c8aae Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 5 Mar 2018 14:32:45 +0900 Subject: [PATCH 45/56] dt-bindings: rcar-gen3-phy-usb3: Add bindings for r8a77965 This patch adds bindings for r8a77965 (R-Car M3-N). Signed-off-by: Yoshihiro Shimoda Reviewed-by: Geert Uytterhoeven Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt index f94cea48f6b1..47dd296ecead 100644 --- a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt +++ b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt @@ -11,6 +11,8 @@ Required properties: SoC. "renesas,r8a7796-usb3-phy" if the device is a part of an R8A7796 SoC. + "renesas,r8a77965-usb3-phy" if the device is a part of an + R8A77965 SoC. "renesas,rcar-gen3-usb3-phy" for a generic R-Car Gen3 compatible device. From d581ba62f34be6a190116523521875a021109b02 Mon Sep 17 00:00:00 2001 From: Pengcheng Li Date: Fri, 9 Mar 2018 22:47:00 +0800 Subject: [PATCH 46/56] dt-bindings: add bindings doc for HiSilicon INNO USB2 PHY It adds device tree bindings document for HiSilicon INNO USB2 PHY. Signed-off-by: Pengcheng Li Signed-off-by: Jiancheng Xue Signed-off-by: Shawn Guo Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- .../bindings/phy/phy-hisi-inno-usb2.txt | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt diff --git a/Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt b/Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt new file mode 100644 index 000000000000..0d70c8341095 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt @@ -0,0 +1,71 @@ +Device tree bindings for HiSilicon INNO USB2 PHY + +Required properties: +- compatible: Should be one of the following strings: + "hisilicon,inno-usb2-phy", + "hisilicon,hi3798cv200-usb2-phy". +- reg: Should be the address space for PHY configuration register in peripheral + controller, e.g. PERI_USB0 for USB 2.0 PHY01 on Hi3798CV200 SoC. +- clocks: The phandle and clock specifier pair for INNO USB2 PHY device + reference clock. +- resets: The phandle and reset specifier pair for INNO USB2 PHY device reset + signal. +- #address-cells: Must be 1. +- #size-cells: Must be 0. + +The INNO USB2 PHY device should be a child node of peripheral controller that +contains the PHY configuration register, and each device suppports up to 2 PHY +ports which are represented as child nodes of INNO USB2 PHY device. + +Required properties for PHY port node: +- reg: The PHY port instance number. +- #phy-cells: Defined by generic PHY bindings. Must be 0. +- resets: The phandle and reset specifier pair for PHY port reset signal. + +Refer to phy/phy-bindings.txt for the generic PHY binding properties + +Example: + +perictrl: peripheral-controller@8a20000 { + compatible = "hisilicon,hi3798cv200-perictrl", "simple-mfd"; + reg = <0x8a20000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x8a20000 0x1000>; + + usb2_phy1: usb2-phy@120 { + compatible = "hisilicon,hi3798cv200-usb2-phy"; + reg = <0x120 0x4>; + clocks = <&crg HISTB_USB2_PHY1_REF_CLK>; + resets = <&crg 0xbc 4>; + #address-cells = <1>; + #size-cells = <0>; + + usb2_phy1_port0: phy@0 { + reg = <0>; + #phy-cells = <0>; + resets = <&crg 0xbc 8>; + }; + + usb2_phy1_port1: phy@1 { + reg = <1>; + #phy-cells = <0>; + resets = <&crg 0xbc 9>; + }; + }; + + usb2_phy2: usb2-phy@124 { + compatible = "hisilicon,hi3798cv200-usb2-phy"; + reg = <0x124 0x4>; + clocks = <&crg HISTB_USB2_PHY2_REF_CLK>; + resets = <&crg 0xbc 6>; + #address-cells = <1>; + #size-cells = <0>; + + usb2_phy2_port0: phy@0 { + reg = <0>; + #phy-cells = <0>; + resets = <&crg 0xbc 10>; + }; + }; +}; From ba8b0ee81fbbc249e60f84bf097bd56e8047c742 Mon Sep 17 00:00:00 2001 From: Pengcheng Li Date: Fri, 9 Mar 2018 22:47:01 +0800 Subject: [PATCH 47/56] phy: add inno-usb2-phy driver for hi3798cv200 SoC It adds inno-usb2-phy driver for hi3798cv200 SoC USB 2.0 support. One inno-usb2-phy device can support up to two PHY ports. While there is device level reference clock and power reset to be controlled, each PHY port has its own utmi reset that needs to assert/de-assert as needed. Hi3798cv200 needs to access PHY port0 register via particular peripheral syscon controller register to control PHY, like turning on PHY clock. Signed-off-by: Pengcheng Li Signed-off-by: Jiancheng Xue Signed-off-by: Shawn Guo Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/hisilicon/Kconfig | 10 ++ drivers/phy/hisilicon/Makefile | 1 + drivers/phy/hisilicon/phy-hisi-inno-usb2.c | 197 +++++++++++++++++++++ 3 files changed, 208 insertions(+) create mode 100644 drivers/phy/hisilicon/phy-hisi-inno-usb2.c diff --git a/drivers/phy/hisilicon/Kconfig b/drivers/phy/hisilicon/Kconfig index 5458e6c9b230..b40ee54a1a50 100644 --- a/drivers/phy/hisilicon/Kconfig +++ b/drivers/phy/hisilicon/Kconfig @@ -21,6 +21,16 @@ config PHY_HISTB_COMBPHY Enable this to support the HISILICON STB SoCs COMBPHY. If unsure, say N. +config PHY_HISI_INNO_USB2 + tristate "HiSilicon INNO USB2 PHY support" + depends on (ARCH_HISI && ARM64) || COMPILE_TEST + select GENERIC_PHY + select MFD_SYSCON + help + Support for INNO USB2 PHY on HiSilicon SoCs. This Phy supports + USB 1.5Mb/s, USB 12Mb/s, USB 480Mb/s speeds. It supports one + USB host port to accept one USB device. + config PHY_HIX5HD2_SATA tristate "HIX5HD2 SATA PHY Driver" depends on ARCH_HIX5HD2 && OF && HAS_IOMEM diff --git a/drivers/phy/hisilicon/Makefile b/drivers/phy/hisilicon/Makefile index 5e8e2dfa8c37..f662a4fe18d8 100644 --- a/drivers/phy/hisilicon/Makefile +++ b/drivers/phy/hisilicon/Makefile @@ -1,3 +1,4 @@ obj-$(CONFIG_PHY_HI6220_USB) += phy-hi6220-usb.o obj-$(CONFIG_PHY_HISTB_COMBPHY) += phy-histb-combphy.o +obj-$(CONFIG_PHY_HISI_INNO_USB2) += phy-hisi-inno-usb2.o obj-$(CONFIG_PHY_HIX5HD2_SATA) += phy-hix5hd2-sata.o diff --git a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c new file mode 100644 index 000000000000..524381249a2b --- /dev/null +++ b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c @@ -0,0 +1,197 @@ +/* + * HiSilicon INNO USB2 PHY Driver. + * + * Copyright (c) 2016-2017 HiSilicon Technologies Co., Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include +#include +#include +#include +#include + +#define INNO_PHY_PORT_NUM 2 +#define REF_CLK_STABLE_TIME 100 /* unit:us */ +#define UTMI_CLK_STABLE_TIME 200 /* unit:us */ +#define TEST_CLK_STABLE_TIME 2 /* unit:ms */ +#define PHY_CLK_STABLE_TIME 2 /* unit:ms */ +#define UTMI_RST_COMPLETE_TIME 2 /* unit:ms */ +#define POR_RST_COMPLETE_TIME 300 /* unit:us */ +#define PHY_TEST_DATA GENMASK(7, 0) +#define PHY_TEST_ADDR GENMASK(15, 8) +#define PHY_TEST_PORT GENMASK(18, 16) +#define PHY_TEST_WREN BIT(21) +#define PHY_TEST_CLK BIT(22) /* rising edge active */ +#define PHY_TEST_RST BIT(23) /* low active */ +#define PHY_CLK_ENABLE BIT(2) + +struct hisi_inno_phy_port { + struct reset_control *utmi_rst; + struct hisi_inno_phy_priv *priv; +}; + +struct hisi_inno_phy_priv { + void __iomem *mmio; + struct clk *ref_clk; + struct reset_control *por_rst; + struct hisi_inno_phy_port ports[INNO_PHY_PORT_NUM]; +}; + +static void hisi_inno_phy_write_reg(struct hisi_inno_phy_priv *priv, + u8 port, u32 addr, u32 data) +{ + void __iomem *reg = priv->mmio; + u32 val; + + val = (data & PHY_TEST_DATA) | + ((addr << 8) & PHY_TEST_ADDR) | + ((port << 16) & PHY_TEST_PORT) | + PHY_TEST_WREN | PHY_TEST_RST; + writel(val, reg); + + val |= PHY_TEST_CLK; + writel(val, reg); + + val &= ~PHY_TEST_CLK; + writel(val, reg); +} + +static void hisi_inno_phy_setup(struct hisi_inno_phy_priv *priv) +{ + /* The phy clk is controlled by the port0 register 0x06. */ + hisi_inno_phy_write_reg(priv, 0, 0x06, PHY_CLK_ENABLE); + msleep(PHY_CLK_STABLE_TIME); +} + +static int hisi_inno_phy_init(struct phy *phy) +{ + struct hisi_inno_phy_port *port = phy_get_drvdata(phy); + struct hisi_inno_phy_priv *priv = port->priv; + int ret; + + ret = clk_prepare_enable(priv->ref_clk); + if (ret) + return ret; + udelay(REF_CLK_STABLE_TIME); + + reset_control_deassert(priv->por_rst); + udelay(POR_RST_COMPLETE_TIME); + + /* Set up phy registers */ + hisi_inno_phy_setup(priv); + + reset_control_deassert(port->utmi_rst); + udelay(UTMI_RST_COMPLETE_TIME); + + return 0; +} + +static int hisi_inno_phy_exit(struct phy *phy) +{ + struct hisi_inno_phy_port *port = phy_get_drvdata(phy); + struct hisi_inno_phy_priv *priv = port->priv; + + reset_control_assert(port->utmi_rst); + reset_control_assert(priv->por_rst); + clk_disable_unprepare(priv->ref_clk); + + return 0; +} + +static const struct phy_ops hisi_inno_phy_ops = { + .init = hisi_inno_phy_init, + .exit = hisi_inno_phy_exit, + .owner = THIS_MODULE, +}; + +static int hisi_inno_phy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct hisi_inno_phy_priv *priv; + struct phy_provider *provider; + struct device_node *child; + struct resource *res; + int i = 0; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->mmio = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->mmio)) { + ret = PTR_ERR(priv->mmio); + return ret; + } + + priv->ref_clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->ref_clk)) + return PTR_ERR(priv->ref_clk); + + priv->por_rst = devm_reset_control_get_exclusive(dev, NULL); + if (IS_ERR(priv->por_rst)) + return PTR_ERR(priv->por_rst); + + for_each_child_of_node(np, child) { + struct reset_control *rst; + struct phy *phy; + + rst = of_reset_control_get_exclusive(child, NULL); + if (IS_ERR(rst)) + return PTR_ERR(rst); + priv->ports[i].utmi_rst = rst; + priv->ports[i].priv = priv; + + phy = devm_phy_create(dev, child, &hisi_inno_phy_ops); + if (IS_ERR(phy)) + return PTR_ERR(phy); + + phy_set_bus_width(phy, 8); + phy_set_drvdata(phy, &priv->ports[i]); + i++; + + if (i > INNO_PHY_PORT_NUM) { + dev_warn(dev, "Support %d ports in maximum\n", i); + break; + } + } + + provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + return PTR_ERR_OR_ZERO(provider); +} + +static const struct of_device_id hisi_inno_phy_of_match[] = { + { .compatible = "hisilicon,inno-usb2-phy", }, + { .compatible = "hisilicon,hi3798cv200-usb2-phy", }, + { }, +}; +MODULE_DEVICE_TABLE(of, hisi_inno_phy_of_match); + +static struct platform_driver hisi_inno_phy_driver = { + .probe = hisi_inno_phy_probe, + .driver = { + .name = "hisi-inno-phy", + .of_match_table = hisi_inno_phy_of_match, + } +}; +module_platform_driver(hisi_inno_phy_driver); + +MODULE_DESCRIPTION("HiSilicon INNO USB2 PHY Driver"); +MODULE_LICENSE("GPL v2"); From 5d1ebbda0318b1ba55eaa1fae3fd867af17b0774 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 8 Mar 2018 18:37:50 -0800 Subject: [PATCH 48/56] phy: mapphone-mdm6600: Add USB PHY driver for MDM6600 on Droid 4 Let's add support for the GPIO controlled USB PHY on the MDM6600 modem. It is used on some Motorola Mapphone series of phones and tablets such as Droid 4. The MDM6600 is hardwired to the first OHCI port in the Droid 4 case, and is controlled by several GPIOs. The USB PHY is integrated into the MDM6600 device it seems. We know this as we get L3 errors from omap-usb-host if trying to use the PHY before MDM6600 is configured. The GPIOs controlling MDM6600 are used to power device on and off, to configure the USB start-up mode (normal mode versus USB flashing), and they also tell the state of the MDM6600 device. The two start-up mode GPIOs are dual-purposed and used for out of band (OOB) wake-up for USB and TS 27.010 serial mux. But we need to configure the USB start-up mode first to get MDM6600 booted in the right mode to be usable in the first place. Note that the Motorola Mapphone Linux kernel tree has a "radio-ctrl" driver for modems. But it really does not control the radio at all, it just controls the modem power and start-up mode for USB. So I came to the conclusion that we're better off having this done in the USB PHY driver. For adding support for USB flashing mode, we can later on add a kernel module option for flash_mode=1 or something similar. Also note that currently there is no PM runtime support for the OHCI on omap variant SoCs. So for low(er) power idle states, currenty both ohci-platform and phy-mapphone-mdm6600 must be unloaded or unbound. For reference here is what I measured for total power consumption on an idle Droid 4 with and without USB related MDM6600 modules: idle lcd off phy-mapphone-mdm6600 ohci-platform 153mW 284mW 344mW So it seems that MDM6600 is currently not yet idling even with it's radio turned off, but that's something that is beyond the control of this USB PHY driver. This patch does get us to the point where modem data and GPS are usable with libqmi and ModemManager for example. Voice calls need more audio driver work. Cc: devicetree@vger.kernel.org Cc: Mark Rutland Cc: Marcel Partap Cc: Michael Scott Cc: Rob Herring Reviewed-by: Rob Herring Signed-off-by: Tony Lindgren Signed-off-by: Kishon Vijay Abraham I --- .../bindings/phy/phy-mapphone-mdm6600.txt | 29 + drivers/phy/motorola/Kconfig | 8 + drivers/phy/motorola/Makefile | 1 + drivers/phy/motorola/phy-mapphone-mdm6600.c | 542 ++++++++++++++++++ 4 files changed, 580 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-mapphone-mdm6600.txt create mode 100644 drivers/phy/motorola/phy-mapphone-mdm6600.c diff --git a/Documentation/devicetree/bindings/phy/phy-mapphone-mdm6600.txt b/Documentation/devicetree/bindings/phy/phy-mapphone-mdm6600.txt new file mode 100644 index 000000000000..29427d4f047a --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-mapphone-mdm6600.txt @@ -0,0 +1,29 @@ +Device tree binding documentation for Motorola Mapphone MDM6600 USB PHY + +Required properties: +- compatible Must be "motorola,mapphone-mdm6600" +- enable-gpios GPIO to enable the USB PHY +- power-gpios GPIO to power on the device +- reset-gpios GPIO to reset the device +- motorola,mode-gpios Two GPIOs to configure MDM6600 USB start-up mode for + normal mode versus USB flashing mode +- motorola,cmd-gpios Three GPIOs to control the power state of the MDM6600 +- motorola,status-gpios Three GPIOs to read the power state of the MDM6600 + +Example: + +usb-phy { + compatible = "motorola,mapphone-mdm6600"; + enable-gpios = <&gpio3 31 GPIO_ACTIVE_LOW>; + power-gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio2 17 GPIO_ACTIVE_HIGH>; + motorola,mode-gpios = <&gpio5 20 GPIO_ACTIVE_HIGH>, + <&gpio5 21 GPIO_ACTIVE_HIGH>; + motorola,cmd-gpios = <&gpio4 7 GPIO_ACTIVE_HIGH>, + <&gpio4 8 GPIO_ACTIVE_HIGH>, + <&gpio5 14 GPIO_ACTIVE_HIGH>; + motorola,status-gpios = <&gpio2 20 GPIO_ACTIVE_HIGH>, + <&gpio2 21 GPIO_ACTIVE_HIGH>, + <&gpio2 23 GPIO_ACTIVE_HIGH>; + #phy-cells = <0>; +}; diff --git a/drivers/phy/motorola/Kconfig b/drivers/phy/motorola/Kconfig index 6bb7d6bdf1bf..82651524ffb9 100644 --- a/drivers/phy/motorola/Kconfig +++ b/drivers/phy/motorola/Kconfig @@ -10,3 +10,11 @@ config PHY_CPCAP_USB help Enable this for USB to work on Motorola phones and tablets such as Droid 4. + +config PHY_MAPPHONE_MDM6600 + tristate "Motorola Mapphone MDM6600 modem USB PHY driver" + depends on OF && USB_SUPPORT + select GENERIC_PHY + help + Enable this for MDM6600 USB modem to work on Motorola phones + and tablets such as Droid 4. diff --git a/drivers/phy/motorola/Makefile b/drivers/phy/motorola/Makefile index b6cd618d671a..3514f985b355 100644 --- a/drivers/phy/motorola/Makefile +++ b/drivers/phy/motorola/Makefile @@ -3,3 +3,4 @@ # obj-$(CONFIG_PHY_CPCAP_USB) += phy-cpcap-usb.o +obj-$(CONFIG_PHY_MAPPHONE_MDM6600) += phy-mapphone-mdm6600.o diff --git a/drivers/phy/motorola/phy-mapphone-mdm6600.c b/drivers/phy/motorola/phy-mapphone-mdm6600.c new file mode 100644 index 000000000000..5439dd90d0dd --- /dev/null +++ b/drivers/phy/motorola/phy-mapphone-mdm6600.c @@ -0,0 +1,542 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Motorola Mapphone MDM6600 modem GPIO controlled USB PHY driver + * Copyright (C) 2018 Tony Lindgren + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define PHY_MDM6600_PHY_DELAY_MS 4000 /* PHY enable 2.2s to 3.5s */ +#define PHY_MDM6600_ENABLED_DELAY_MS 8000 /* 8s more total for MDM6600 */ + +enum phy_mdm6600_ctrl_lines { + PHY_MDM6600_ENABLE, /* USB PHY enable */ + PHY_MDM6600_POWER, /* Device power */ + PHY_MDM6600_RESET, /* Device reset */ + PHY_MDM6600_NR_CTRL_LINES, +}; + +enum phy_mdm6600_bootmode_lines { + PHY_MDM6600_MODE0, /* out USB mode0 and OOB wake */ + PHY_MDM6600_MODE1, /* out USB mode1, in OOB wake */ + PHY_MDM6600_NR_MODE_LINES, +}; + +enum phy_mdm6600_cmd_lines { + PHY_MDM6600_CMD0, + PHY_MDM6600_CMD1, + PHY_MDM6600_CMD2, + PHY_MDM6600_NR_CMD_LINES, +}; + +enum phy_mdm6600_status_lines { + PHY_MDM6600_STATUS0, + PHY_MDM6600_STATUS1, + PHY_MDM6600_STATUS2, + PHY_MDM6600_NR_STATUS_LINES, +}; + +/* + * MDM6600 command codes. These are based on Motorola Mapphone Linux + * kernel tree. + */ +enum phy_mdm6600_cmd { + PHY_MDM6600_CMD_BP_PANIC_ACK, + PHY_MDM6600_CMD_DATA_ONLY_BYPASS, /* Reroute USB to CPCAP PHY */ + PHY_MDM6600_CMD_FULL_BYPASS, /* Reroute USB to CPCAP PHY */ + PHY_MDM6600_CMD_NO_BYPASS, /* Request normal USB mode */ + PHY_MDM6600_CMD_BP_SHUTDOWN_REQ, /* Request device power off */ + PHY_MDM6600_CMD_BP_UNKNOWN_5, + PHY_MDM6600_CMD_BP_UNKNOWN_6, + PHY_MDM6600_CMD_UNDEFINED, +}; + +/* + * MDM6600 status codes. These are based on Motorola Mapphone Linux + * kernel tree. + */ +enum phy_mdm6600_status { + PHY_MDM6600_STATUS_PANIC, /* Seems to be really off */ + PHY_MDM6600_STATUS_PANIC_BUSY_WAIT, + PHY_MDM6600_STATUS_QC_DLOAD, + PHY_MDM6600_STATUS_RAM_DOWNLOADER, /* MDM6600 USB flashing mode */ + PHY_MDM6600_STATUS_PHONE_CODE_AWAKE, /* MDM6600 normal USB mode */ + PHY_MDM6600_STATUS_PHONE_CODE_ASLEEP, + PHY_MDM6600_STATUS_SHUTDOWN_ACK, + PHY_MDM6600_STATUS_UNDEFINED, +}; + +static const char * const +phy_mdm6600_status_name[] = { + "off", "busy", "qc_dl", "ram_dl", "awake", + "asleep", "shutdown", "undefined", +}; + +struct phy_mdm6600 { + struct device *dev; + struct phy *generic_phy; + struct phy_provider *phy_provider; + struct gpio_desc *ctrl_gpios[PHY_MDM6600_NR_CTRL_LINES]; + struct gpio_descs *mode_gpios; + struct gpio_descs *status_gpios; + struct gpio_descs *cmd_gpios; + struct delayed_work bootup_work; + struct delayed_work status_work; + struct completion ack; + bool enabled; /* mdm6600 phy enabled */ + bool running; /* mdm6600 boot done */ + int status; +}; + +static int phy_mdm6600_init(struct phy *x) +{ + struct phy_mdm6600 *ddata = phy_get_drvdata(x); + struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE]; + + if (!ddata->enabled) + return -EPROBE_DEFER; + + gpiod_set_value_cansleep(enable_gpio, 0); + + return 0; +} + +static int phy_mdm6600_power_on(struct phy *x) +{ + struct phy_mdm6600 *ddata = phy_get_drvdata(x); + struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE]; + + if (!ddata->enabled) + return -ENODEV; + + gpiod_set_value_cansleep(enable_gpio, 1); + + return 0; +} + +static int phy_mdm6600_power_off(struct phy *x) +{ + struct phy_mdm6600 *ddata = phy_get_drvdata(x); + struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE]; + + if (!ddata->enabled) + return -ENODEV; + + gpiod_set_value_cansleep(enable_gpio, 0); + + return 0; +} + +static const struct phy_ops gpio_usb_ops = { + .init = phy_mdm6600_init, + .power_on = phy_mdm6600_power_on, + .power_off = phy_mdm6600_power_off, + .owner = THIS_MODULE, +}; + +/** + * phy_mdm6600_cmd() - send a command request to mdm6600 + * @ddata: device driver data + * + * Configures the three command request GPIOs to the specified value. + */ +static void phy_mdm6600_cmd(struct phy_mdm6600 *ddata, int val) +{ + int values[PHY_MDM6600_NR_CMD_LINES]; + int i; + + val &= (1 << PHY_MDM6600_NR_CMD_LINES) - 1; + for (i = 0; i < PHY_MDM6600_NR_CMD_LINES; i++) + values[i] = (val & BIT(i)) >> i; + + gpiod_set_array_value_cansleep(PHY_MDM6600_NR_CMD_LINES, + ddata->cmd_gpios->desc, values); +} + +/** + * phy_mdm6600_status() - read mdm6600 status lines + * @ddata: device driver data + */ +static void phy_mdm6600_status(struct work_struct *work) +{ + struct phy_mdm6600 *ddata; + struct device *dev; + int values[PHY_MDM6600_NR_STATUS_LINES]; + int error, i, val = 0; + + ddata = container_of(work, struct phy_mdm6600, status_work.work); + dev = ddata->dev; + + error = gpiod_get_array_value_cansleep(PHY_MDM6600_NR_CMD_LINES, + ddata->status_gpios->desc, + values); + if (error) + return; + + for (i = 0; i < PHY_MDM6600_NR_CMD_LINES; i++) { + val |= values[i] << i; + dev_dbg(ddata->dev, "XXX %s: i: %i values[i]: %i val: %i\n", + __func__, i, values[i], val); + } + ddata->status = val; + + dev_info(dev, "modem status: %i %s\n", + ddata->status, + phy_mdm6600_status_name[ddata->status & 7]); + complete(&ddata->ack); +} + +static irqreturn_t phy_mdm6600_irq_thread(int irq, void *data) +{ + struct phy_mdm6600 *ddata = data; + + schedule_delayed_work(&ddata->status_work, msecs_to_jiffies(10)); + + return IRQ_HANDLED; +} + +/** + * phy_mdm6600_wakeirq_thread - handle mode1 line OOB wake after booting + * @irq: interrupt + * @data: interrupt handler data + * + * GPIO mode1 is used initially as output to configure the USB boot + * mode for mdm6600. After booting it is used as input for OOB wake + * signal from mdm6600 to the SoC. Just use it for debug info only + * for now. + */ +static irqreturn_t phy_mdm6600_wakeirq_thread(int irq, void *data) +{ + struct phy_mdm6600 *ddata = data; + struct gpio_desc *mode_gpio1; + + mode_gpio1 = ddata->mode_gpios->desc[PHY_MDM6600_MODE1]; + dev_dbg(ddata->dev, "OOB wake on mode_gpio1: %i\n", + gpiod_get_value(mode_gpio1)); + + return IRQ_HANDLED; +} + +/** + * phy_mdm6600_init_irq() - initialize mdm6600 status IRQ lines + * @ddata: device driver data + */ +static void phy_mdm6600_init_irq(struct phy_mdm6600 *ddata) +{ + struct device *dev = ddata->dev; + int i, error, irq; + + for (i = PHY_MDM6600_STATUS0; + i <= PHY_MDM6600_STATUS2; i++) { + struct gpio_desc *gpio = ddata->status_gpios->desc[i]; + + irq = gpiod_to_irq(gpio); + if (irq <= 0) + continue; + + error = devm_request_threaded_irq(dev, irq, NULL, + phy_mdm6600_irq_thread, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + "mdm6600", + ddata); + if (error) + dev_warn(dev, "no modem status irq%i: %i\n", + irq, error); + } +} + +struct phy_mdm6600_map { + const char *name; + int direction; +}; + +static const struct phy_mdm6600_map +phy_mdm6600_ctrl_gpio_map[PHY_MDM6600_NR_CTRL_LINES] = { + { "enable", GPIOD_OUT_LOW, }, /* low = phy disabled */ + { "power", GPIOD_OUT_LOW, }, /* low = off */ + { "reset", GPIOD_OUT_HIGH, }, /* high = reset */ +}; + +/** + * phy_mdm6600_init_lines() - initialize mdm6600 GPIO lines + * @ddata: device driver data + */ +static int phy_mdm6600_init_lines(struct phy_mdm6600 *ddata) +{ + struct device *dev = ddata->dev; + int i; + + /* MDM6600 control lines */ + for (i = 0; i < ARRAY_SIZE(phy_mdm6600_ctrl_gpio_map); i++) { + const struct phy_mdm6600_map *map = + &phy_mdm6600_ctrl_gpio_map[i]; + struct gpio_desc **gpio = &ddata->ctrl_gpios[i]; + + *gpio = devm_gpiod_get(dev, map->name, map->direction); + if (IS_ERR(*gpio)) { + dev_info(dev, "gpio %s error %li\n", + map->name, PTR_ERR(*gpio)); + return PTR_ERR(*gpio); + } + } + + /* MDM6600 USB start-up mode output lines */ + ddata->mode_gpios = devm_gpiod_get_array(dev, "motorola,mode", + GPIOD_OUT_LOW); + if (IS_ERR(ddata->mode_gpios)) + return PTR_ERR(ddata->mode_gpios); + + if (ddata->mode_gpios->ndescs != PHY_MDM6600_NR_MODE_LINES) + return -EINVAL; + + /* MDM6600 status input lines */ + ddata->status_gpios = devm_gpiod_get_array(dev, "motorola,status", + GPIOD_IN); + if (IS_ERR(ddata->status_gpios)) + return PTR_ERR(ddata->status_gpios); + + if (ddata->status_gpios->ndescs != PHY_MDM6600_NR_STATUS_LINES) + return -EINVAL; + + /* MDM6600 cmd output lines */ + ddata->cmd_gpios = devm_gpiod_get_array(dev, "motorola,cmd", + GPIOD_OUT_LOW); + if (IS_ERR(ddata->cmd_gpios)) + return PTR_ERR(ddata->cmd_gpios); + + if (ddata->cmd_gpios->ndescs != PHY_MDM6600_NR_CMD_LINES) + return -EINVAL; + + return 0; +} + +/** + * phy_mdm6600_device_power_on() - power on mdm6600 device + * @ddata: device driver data + * + * To get the integrated USB phy in MDM6600 takes some hoops. We must ensure + * the shared USB bootmode GPIOs are configured, then request modem start-up, + * reset and power-up.. And then we need to recycle the shared USB bootmode + * GPIOs as they are also used for Out of Band (OOB) wake for the USB and + * TS 27.010 serial mux. + */ +static int phy_mdm6600_device_power_on(struct phy_mdm6600 *ddata) +{ + struct gpio_desc *mode_gpio0, *mode_gpio1, *reset_gpio, *power_gpio; + int error = 0, wakeirq; + + mode_gpio0 = ddata->mode_gpios->desc[PHY_MDM6600_MODE0]; + mode_gpio1 = ddata->mode_gpios->desc[PHY_MDM6600_MODE1]; + reset_gpio = ddata->ctrl_gpios[PHY_MDM6600_RESET]; + power_gpio = ddata->ctrl_gpios[PHY_MDM6600_POWER]; + + /* + * Shared GPIOs must be low for normal USB mode. After booting + * they are used for OOB wake signaling. These can be also used + * to configure USB flashing mode later on based on a module + * parameter. + */ + gpiod_set_value_cansleep(mode_gpio0, 0); + gpiod_set_value_cansleep(mode_gpio1, 0); + + /* Request start-up mode */ + phy_mdm6600_cmd(ddata, PHY_MDM6600_CMD_NO_BYPASS); + + /* Request a reset first */ + gpiod_set_value_cansleep(reset_gpio, 0); + msleep(100); + + /* Toggle power GPIO to request mdm6600 to start */ + gpiod_set_value_cansleep(power_gpio, 1); + msleep(100); + gpiod_set_value_cansleep(power_gpio, 0); + + /* + * Looks like the USB PHY needs between 2.2 to 4 seconds. + * If we try to use it before that, we will get L3 errors + * from omap-usb-host trying to access the PHY. See also + * phy_mdm6600_init() for -EPROBE_DEFER. + */ + msleep(PHY_MDM6600_PHY_DELAY_MS); + ddata->enabled = true; + + /* Booting up the rest of MDM6600 will take total about 8 seconds */ + dev_info(ddata->dev, "Waiting for power up request to complete..\n"); + if (wait_for_completion_timeout(&ddata->ack, + msecs_to_jiffies(PHY_MDM6600_ENABLED_DELAY_MS))) { + if (ddata->status > PHY_MDM6600_STATUS_PANIC && + ddata->status < PHY_MDM6600_STATUS_SHUTDOWN_ACK) + dev_info(ddata->dev, "Powered up OK\n"); + } else { + ddata->enabled = false; + error = -ETIMEDOUT; + dev_err(ddata->dev, "Timed out powering up\n"); + } + + /* Reconfigure mode1 GPIO as input for OOB wake */ + gpiod_direction_input(mode_gpio1); + + wakeirq = gpiod_to_irq(mode_gpio1); + if (wakeirq <= 0) + return wakeirq; + + error = devm_request_threaded_irq(ddata->dev, wakeirq, NULL, + phy_mdm6600_wakeirq_thread, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + "mdm6600-wake", + ddata); + if (error) + dev_warn(ddata->dev, "no modem wakeirq irq%i: %i\n", + wakeirq, error); + + ddata->running = true; + + return error; +} + +/** + * phy_mdm6600_device_power_off() - power off mdm6600 device + * @ddata: device driver data + */ +static void phy_mdm6600_device_power_off(struct phy_mdm6600 *ddata) +{ + struct gpio_desc *reset_gpio = + ddata->ctrl_gpios[PHY_MDM6600_RESET]; + + ddata->enabled = false; + phy_mdm6600_cmd(ddata, PHY_MDM6600_CMD_BP_SHUTDOWN_REQ); + msleep(100); + + gpiod_set_value_cansleep(reset_gpio, 1); + + dev_info(ddata->dev, "Waiting for power down request to complete.. "); + if (wait_for_completion_timeout(&ddata->ack, + msecs_to_jiffies(5000))) { + if (ddata->status == PHY_MDM6600_STATUS_PANIC) + dev_info(ddata->dev, "Powered down OK\n"); + } else { + dev_err(ddata->dev, "Timed out powering down\n"); + } +} + +static void phy_mdm6600_deferred_power_on(struct work_struct *work) +{ + struct phy_mdm6600 *ddata; + int error; + + ddata = container_of(work, struct phy_mdm6600, bootup_work.work); + + error = phy_mdm6600_device_power_on(ddata); + if (error) + dev_err(ddata->dev, "Device not functional\n"); +} + +static const struct of_device_id phy_mdm6600_id_table[] = { + { .compatible = "motorola,mapphone-mdm6600", }, + {}, +}; +MODULE_DEVICE_TABLE(of, phy_mdm6600_id_table); + +static int phy_mdm6600_probe(struct platform_device *pdev) +{ + struct phy_mdm6600 *ddata; + int error; + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + INIT_DELAYED_WORK(&ddata->bootup_work, + phy_mdm6600_deferred_power_on); + INIT_DELAYED_WORK(&ddata->status_work, phy_mdm6600_status); + init_completion(&ddata->ack); + + ddata->dev = &pdev->dev; + platform_set_drvdata(pdev, ddata); + + error = phy_mdm6600_init_lines(ddata); + if (error) + return error; + + phy_mdm6600_init_irq(ddata); + + ddata->generic_phy = devm_phy_create(ddata->dev, NULL, &gpio_usb_ops); + if (IS_ERR(ddata->generic_phy)) { + error = PTR_ERR(ddata->generic_phy); + goto cleanup; + } + + phy_set_drvdata(ddata->generic_phy, ddata); + + ddata->phy_provider = + devm_of_phy_provider_register(ddata->dev, + of_phy_simple_xlate); + if (IS_ERR(ddata->phy_provider)) { + error = PTR_ERR(ddata->phy_provider); + goto cleanup; + } + + schedule_delayed_work(&ddata->bootup_work, 0); + + /* + * See phy_mdm6600_device_power_on(). We should be able + * to remove this eventually when ohci-platform can deal + * with -EPROBE_DEFER. + */ + msleep(PHY_MDM6600_PHY_DELAY_MS + 500); + + return 0; + +cleanup: + phy_mdm6600_device_power_off(ddata); + return error; +} + +static int phy_mdm6600_remove(struct platform_device *pdev) +{ + struct phy_mdm6600 *ddata = platform_get_drvdata(pdev); + struct gpio_desc *reset_gpio = ddata->ctrl_gpios[PHY_MDM6600_RESET]; + + if (!ddata->running) + wait_for_completion_timeout(&ddata->ack, + msecs_to_jiffies(PHY_MDM6600_ENABLED_DELAY_MS)); + + gpiod_set_value_cansleep(reset_gpio, 1); + phy_mdm6600_device_power_off(ddata); + + cancel_delayed_work_sync(&ddata->bootup_work); + cancel_delayed_work_sync(&ddata->status_work); + + return 0; +} + +static struct platform_driver phy_mdm6600_driver = { + .probe = phy_mdm6600_probe, + .remove = phy_mdm6600_remove, + .driver = { + .name = "phy-mapphone-mdm6600", + .of_match_table = of_match_ptr(phy_mdm6600_id_table), + }, +}; + +module_platform_driver(phy_mdm6600_driver); + +MODULE_ALIAS("platform:gpio_usb"); +MODULE_AUTHOR("Tony Lindgren "); +MODULE_DESCRIPTION("mdm6600 gpio usb phy driver"); +MODULE_LICENSE("GPL v2"); From 0fbc47d9e426a934668dbfeb0db26da6f0b7f35c Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Fri, 16 Feb 2018 13:09:51 +0100 Subject: [PATCH 49/56] phy: rockchip-typec: deprecate some DT properties for various register fields. Adding properties for various register fields in the DT doesn't scale and this information should be in the driver instead. Before this patch these registers (description below) were specified in the DT, every register node contained 3 sections: offset, enable bit, write mask bit. - rockchip,typec-conn-dir : the register of type-c connector direction, for type-c phy0, it must be <0xe580 0 16>; for type-c phy1, it must be <0xe58c 0 16>; - rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2 enable control. for type-c phy0, it must be <0xe580 3 19>; for type-c phy1, it must be <0xe58c 3 19>; - rockchip,external-psm : the register of type-c phy external psm clock selection. for type-c phy0, it must be <0xe588 14 30>; for type-c phy1, it must be <0xe594 14 30>; - rockchip,pipe-status : the register of type-c phy pipe status. for type-c phy0, it must be <0xe5c0 0 0>; for type-c phy1, it must be <0xe5c0 16 16>; After this patch these register definitions are in the driver. So can be removed from the DT. Note that there are 2 type-c phys for RK3399 with different offsets, the driver checks the phy base address of the running instance and applies the right offsets. Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 112 ++++++++++++---------- 1 file changed, 63 insertions(+), 49 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 7492c8978217..5f660f6b9f95 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -355,7 +355,16 @@ struct usb3phy_reg { u32 write_enable; }; +/** + * struct rockchip_usb3phy_port_cfg: usb3-phy port configuration. + * @reg: the base address for usb3-phy config. + * @typec_conn_dir: the register of type-c connector direction. + * @usb3tousb2_en: the register of type-c force usb2 to usb2 enable. + * @external_psm: the register of type-c phy external psm clock. + * @pipe_status: the register of type-c phy pipe status. + */ struct rockchip_usb3phy_port_cfg { + unsigned int reg; struct usb3phy_reg typec_conn_dir; struct usb3phy_reg usb3tousb2_en; struct usb3phy_reg external_psm; @@ -372,7 +381,7 @@ struct rockchip_typec_phy { struct reset_control *uphy_rst; struct reset_control *pipe_rst; struct reset_control *tcphy_rst; - struct rockchip_usb3phy_port_cfg port_cfgs; + const struct rockchip_usb3phy_port_cfg *port_cfgs; /* mutex to protect access to individual PHYs */ struct mutex lock; @@ -424,6 +433,24 @@ struct phy_reg dp_pll_cfg[] = { { 0x4, CMN_DIAG_PLL1_INCLK_CTRL }, }; +static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { + { + .reg = 0xff7c0000, + .typec_conn_dir = { 0xe580, 0, 16 }, + .usb3tousb2_en = { 0xe580, 3, 19 }, + .external_psm = { 0xe588, 14, 30 }, + .pipe_status = { 0xe5c0, 0, 0 }, + }, + { + .reg = 0xff800000, + .typec_conn_dir = { 0xe58c, 0, 16 }, + .usb3tousb2_en = { 0xe58c, 3, 19 }, + .external_psm = { 0xe594, 14, 30 }, + .pipe_status = { 0xe5c0, 16, 16 }, + }, + { /* sentinel */ } +}; + static void tcphy_cfg_24m(struct rockchip_typec_phy *tcphy) { u32 i, rdata; @@ -691,7 +718,7 @@ static void tcphy_dp_aux_calibration(struct rockchip_typec_phy *tcphy) static int tcphy_phy_init(struct rockchip_typec_phy *tcphy, u8 mode) { - struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs; + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; int ret, i; u32 val; @@ -821,7 +848,7 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy) static int rockchip_usb3_phy_power_on(struct phy *phy) { struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); - struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs; + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; const struct usb3phy_reg *reg = &cfg->pipe_status; int timeout, new_mode, ret = 0; u32 val; @@ -984,51 +1011,9 @@ static const struct phy_ops rockchip_dp_phy_ops = { .owner = THIS_MODULE, }; -static int tcphy_get_param(struct device *dev, - struct usb3phy_reg *reg, - const char *name) -{ - u32 buffer[3]; - int ret; - - ret = of_property_read_u32_array(dev->of_node, name, buffer, 3); - if (ret) { - dev_err(dev, "Can not parse %s\n", name); - return ret; - } - - reg->offset = buffer[0]; - reg->enable_bit = buffer[1]; - reg->write_enable = buffer[2]; - return 0; -} - static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy, struct device *dev) { - struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs; - int ret; - - ret = tcphy_get_param(dev, &cfg->typec_conn_dir, - "rockchip,typec-conn-dir"); - if (ret) - return ret; - - ret = tcphy_get_param(dev, &cfg->usb3tousb2_en, - "rockchip,usb3tousb2-en"); - if (ret) - return ret; - - ret = tcphy_get_param(dev, &cfg->external_psm, - "rockchip,external-psm"); - if (ret) - return ret; - - ret = tcphy_get_param(dev, &cfg->pipe_status, - "rockchip,pipe-status"); - if (ret) - return ret; - tcphy->grf_regs = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf"); if (IS_ERR(tcphy->grf_regs)) { @@ -1071,7 +1056,7 @@ static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy, static void typec_phy_pre_init(struct rockchip_typec_phy *tcphy) { - struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs; + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; reset_control_assert(tcphy->tcphy_rst); reset_control_assert(tcphy->uphy_rst); @@ -1092,17 +1077,43 @@ static int rockchip_typec_phy_probe(struct platform_device *pdev) struct rockchip_typec_phy *tcphy; struct phy_provider *phy_provider; struct resource *res; - int ret; + const struct rockchip_usb3phy_port_cfg *phy_cfgs; + const struct of_device_id *match; + int index, ret; tcphy = devm_kzalloc(dev, sizeof(*tcphy), GFP_KERNEL); if (!tcphy) return -ENOMEM; + match = of_match_device(dev->driver->of_match_table, dev); + if (!match || !match->data) { + dev_err(dev, "phy configs are not assigned!\n"); + return -EINVAL; + } + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); tcphy->base = devm_ioremap_resource(dev, res); if (IS_ERR(tcphy->base)) return PTR_ERR(tcphy->base); + phy_cfgs = match->data; + /* find out a proper config which can be matched with dt. */ + index = 0; + while (phy_cfgs[index].reg) { + if (phy_cfgs[index].reg == res->start) { + tcphy->port_cfgs = &phy_cfgs[index]; + break; + } + + ++index; + } + + if (!tcphy->port_cfgs) { + dev_err(dev, "no phy-config can be matched with %s node\n", + np->name); + return -EINVAL; + } + ret = tcphy_parse_dt(tcphy, dev); if (ret) return ret; @@ -1162,8 +1173,11 @@ static int rockchip_typec_phy_remove(struct platform_device *pdev) } static const struct of_device_id rockchip_typec_phy_dt_ids[] = { - { .compatible = "rockchip,rk3399-typec-phy" }, - {} + { + .compatible = "rockchip,rk3399-typec-phy", + .data = &rk3399_usb3phy_port_cfgs + }, + { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, rockchip_typec_phy_dt_ids); From 6912d4f40bc7b8a40604f2fa02bb5545e39d1a35 Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Fri, 16 Feb 2018 13:09:52 +0100 Subject: [PATCH 50/56] dt-bindings: phy-rockchip-typec: deprecate some register properties. As now the following register properties are in the driver, document as deprecated these properties and recommend to not use them on new bindings. The deprecated properties are: - rockchip,typec-conn-dir : the register of type-c connector direction - rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2 enable control. - rockchip,external-psm : the register of type-c phy external psm clock selection. - rockchip,pipe-status : the register of type-c phy pipe status. Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Reviewed-by: Rob Herring Signed-off-by: Kishon Vijay Abraham I --- .../bindings/phy/phy-rockchip-typec.txt | 33 ++++--------------- 1 file changed, 7 insertions(+), 26 deletions(-) diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt index 6ea867e3176f..f95cd492d6fc 100644 --- a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt @@ -16,24 +16,6 @@ Required properties: "uphy", "uphy-pipe", "uphy-tcphy" - extcon : extcon specifier for the Power Delivery -Note, there are 2 type-c phys for RK3399, and they are almost identical, except -these registers(description below), every register node contains 3 sections: -offset, enable bit, write mask bit. - - rockchip,typec-conn-dir : the register of type-c connector direction, - for type-c phy0, it must be <0xe580 0 16>; - for type-c phy1, it must be <0xe58c 0 16>; - - rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2 enable - control. - for type-c phy0, it must be <0xe580 3 19>; - for type-c phy1, it must be <0xe58c 3 19>; - - rockchip,external-psm : the register of type-c phy external psm clock - selection. - for type-c phy0, it must be <0xe588 14 30>; - for type-c phy1, it must be <0xe594 14 30>; - - rockchip,pipe-status : the register of type-c phy pipe status. - for type-c phy0, it must be <0xe5c0 0 0>; - for type-c phy1, it must be <0xe5c0 16 16>; - Required nodes : a sub-node is required for each port the phy provides. The sub-node name is used to identify dp or usb3 port, and shall be the following entries: @@ -43,6 +25,13 @@ Required nodes : a sub-node is required for each port the phy provides. Required properties (port (child) node): - #phy-cells : must be 0, See ./phy-bindings.txt for details. +Deprecated properties, do not use in new device tree sources, these +properties are determined by the compatible value: + - rockchip,typec-conn-dir + - rockchip,usb3tousb2-en + - rockchip,external-psm + - rockchip,pipe-status + Example: tcphy0: phy@ff7c0000 { compatible = "rockchip,rk3399-typec-phy"; @@ -58,10 +47,6 @@ Example: <&cru SRST_UPHY0_PIPE_L00>, <&cru SRST_P_UPHY0_TCPHY>; reset-names = "uphy", "uphy-pipe", "uphy-tcphy"; - rockchip,typec-conn-dir = <0xe580 0 16>; - rockchip,usb3tousb2-en = <0xe580 3 19>; - rockchip,external-psm = <0xe588 14 30>; - rockchip,pipe-status = <0xe5c0 0 0>; tcphy0_dp: dp-port { #phy-cells = <0>; @@ -86,10 +71,6 @@ Example: <&cru SRST_UPHY1_PIPE_L00>, <&cru SRST_P_UPHY1_TCPHY>; reset-names = "uphy", "uphy-pipe", "uphy-tcphy"; - rockchip,typec-conn-dir = <0xe58c 0 16>; - rockchip,usb3tousb2-en = <0xe58c 3 19>; - rockchip,external-psm = <0xe594 14 30>; - rockchip,pipe-status = <0xe5c0 16 16>; tcphy1_dp: dp-port { #phy-cells = <0>; From f293f7409f6b2850d45a9fb8689003d8fa6fe453 Mon Sep 17 00:00:00 2001 From: William wu Date: Fri, 16 Feb 2018 13:09:53 +0100 Subject: [PATCH 51/56] phy: rockchip-typec: enable usb3 host during usb3 phy power on We have forced usb3 to work in usb2 only mode in firmware by setting usb3tousb2_en (bit3 of GRF_USB3PHY0/1_CON0) to 1, and setting host_u3_port_disable (bit0 of GRF_USB3OTG0/1_CON1) to 1 and host_u3_port (bit15~12 of GRF_USB3OTG0/1_CON1) to 0. So we need to re-enable usb3 host. Note that the RK3399 TRM suggests that we should keep the whole usb3 controller in reset for the duration of the Type-C PHY initialization. However, it's hard to assert the reset in the current framework of reset. And according to the TRM, it doesn't require that we should clear the usb3tousb2 bit before pipe ready. So let's enable the usb3 host after pipe ready to avoid the Type-C PHY initialization failure. Signed-off-by: William wu Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 5f660f6b9f95..54dc52a948ef 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -362,6 +362,8 @@ struct usb3phy_reg { * @usb3tousb2_en: the register of type-c force usb2 to usb2 enable. * @external_psm: the register of type-c phy external psm clock. * @pipe_status: the register of type-c phy pipe status. + * @usb3_host_disable: the register of type-c usb3 host disable. + * @usb3_host_port: the register of type-c usb3 host port. */ struct rockchip_usb3phy_port_cfg { unsigned int reg; @@ -369,6 +371,8 @@ struct rockchip_usb3phy_port_cfg { struct usb3phy_reg usb3tousb2_en; struct usb3phy_reg external_psm; struct usb3phy_reg pipe_status; + struct usb3phy_reg usb3_host_disable; + struct usb3phy_reg usb3_host_port; }; struct rockchip_typec_phy { @@ -440,6 +444,8 @@ static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { .usb3tousb2_en = { 0xe580, 3, 19 }, .external_psm = { 0xe588, 14, 30 }, .pipe_status = { 0xe5c0, 0, 0 }, + .usb3_host_disable = { 0x2434, 0, 16 }, + .usb3_host_port = { 0x2434, 12, 28 }, }, { .reg = 0xff800000, @@ -447,6 +453,8 @@ static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { .usb3tousb2_en = { 0xe58c, 3, 19 }, .external_psm = { 0xe594, 14, 30 }, .pipe_status = { 0xe5c0, 16, 16 }, + .usb3_host_disable = { 0x2444, 0, 16 }, + .usb3_host_port = { 0x2444, 12, 28 }, }, { /* sentinel */ } }; @@ -879,6 +887,9 @@ static int rockchip_usb3_phy_power_on(struct phy *phy) regmap_read(tcphy->grf_regs, reg->offset, &val); if (!(val & BIT(reg->enable_bit))) { tcphy->mode |= new_mode & (MODE_DFP_USB | MODE_UFP_USB); + /* enable usb3 host */ + property_enable(tcphy, &cfg->usb3_host_disable, 0); + property_enable(tcphy, &cfg->usb3_host_port, 1); goto unlock_ret; } usleep_range(10, 20); From 5eac5e9c0f515f8e452321b159b4093065dfc757 Mon Sep 17 00:00:00 2001 From: Chris Zhong Date: Fri, 16 Feb 2018 13:09:54 +0100 Subject: [PATCH 52/56] phy: rockchip-typec: force to USB2 if DP at 4 lanes mode The usb3tousb2_en BIT will be clear to 0 in probe(), it make USB controller work at USB3 mode, and if the USB phy is turned on with DP only mode(4 lanes DP), the rockchip_usb3_phy_power_on() will return directly, so usb3_host_disable and usb3_host_port these 2 BIT will keep a same value as coreboot. In coreboot, these 3 BITs are set as USB2 mode, but now one of the bits is changed to USB3, it make USB controller work at a unknown status. These 3 BITs should be changed to USB2, if the Type-C works at 4 lanes mode, and then switch it back to USB3 mode, when USB disconnect. Signed-off-by: Chris Zhong Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 54dc52a948ef..9bc4d4bd46d3 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -853,6 +853,18 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy) return mode; } +static int tcphy_cfg_usb3_to_usb2_only(struct rockchip_typec_phy *tcphy, + bool value) +{ + struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; + + property_enable(tcphy, &cfg->usb3tousb2_en, value); + property_enable(tcphy, &cfg->usb3_host_disable, value); + property_enable(tcphy, &cfg->usb3_host_port, !value); + + return 0; +} + static int rockchip_usb3_phy_power_on(struct phy *phy) { struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); @@ -870,8 +882,10 @@ static int rockchip_usb3_phy_power_on(struct phy *phy) } /* DP-only mode; fall back to USB2 */ - if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB))) + if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB))) { + tcphy_cfg_usb3_to_usb2_only(tcphy, true); goto unlock_ret; + } if (tcphy->mode == new_mode) goto unlock_ret; @@ -887,9 +901,9 @@ static int rockchip_usb3_phy_power_on(struct phy *phy) regmap_read(tcphy->grf_regs, reg->offset, &val); if (!(val & BIT(reg->enable_bit))) { tcphy->mode |= new_mode & (MODE_DFP_USB | MODE_UFP_USB); + /* enable usb3 host */ - property_enable(tcphy, &cfg->usb3_host_disable, 0); - property_enable(tcphy, &cfg->usb3_host_port, 1); + tcphy_cfg_usb3_to_usb2_only(tcphy, false); goto unlock_ret; } usleep_range(10, 20); @@ -910,6 +924,7 @@ static int rockchip_usb3_phy_power_off(struct phy *phy) struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); mutex_lock(&tcphy->lock); + tcphy_cfg_usb3_to_usb2_only(tcphy, false); if (tcphy->mode == MODE_DISCONNECT) goto unlock; From 866d4087f30170187b2d456e7f40cd4e7f29041b Mon Sep 17 00:00:00 2001 From: Chris Zhong Date: Fri, 16 Feb 2018 13:09:55 +0100 Subject: [PATCH 53/56] phy: rockchip-typec: support DP phy switch There are 2 Type-c PHYs in RK3399, but only one DP controller. Hence only one PHY can connect to DP controller at one time, the other should be disconnected. The GRF_SOC_CON26 register has a switch bit to do it, set this bit means enable PHY 1, clear this bit means enable PHY 0. Signed-off-by: Chris Zhong Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 9bc4d4bd46d3..1c79785a5439 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -364,6 +364,7 @@ struct usb3phy_reg { * @pipe_status: the register of type-c phy pipe status. * @usb3_host_disable: the register of type-c usb3 host disable. * @usb3_host_port: the register of type-c usb3 host port. + * @uphy_dp_sel: the register of type-c phy DP select control. */ struct rockchip_usb3phy_port_cfg { unsigned int reg; @@ -373,6 +374,7 @@ struct rockchip_usb3phy_port_cfg { struct usb3phy_reg pipe_status; struct usb3phy_reg usb3_host_disable; struct usb3phy_reg usb3_host_port; + struct usb3phy_reg uphy_dp_sel; }; struct rockchip_typec_phy { @@ -446,6 +448,7 @@ static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { .pipe_status = { 0xe5c0, 0, 0 }, .usb3_host_disable = { 0x2434, 0, 16 }, .usb3_host_port = { 0x2434, 12, 28 }, + .uphy_dp_sel = { 0x6268, 19, 19 }, }, { .reg = 0xff800000, @@ -455,6 +458,7 @@ static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { .pipe_status = { 0xe5c0, 16, 16 }, .usb3_host_disable = { 0x2444, 0, 16 }, .usb3_host_port = { 0x2444, 12, 28 }, + .uphy_dp_sel = { 0x6268, 3, 19 }, }, { /* sentinel */ } }; @@ -856,7 +860,7 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy) static int tcphy_cfg_usb3_to_usb2_only(struct rockchip_typec_phy *tcphy, bool value) { - struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; property_enable(tcphy, &cfg->usb3tousb2_en, value); property_enable(tcphy, &cfg->usb3_host_disable, value); @@ -947,6 +951,7 @@ static const struct phy_ops rockchip_usb3_phy_ops = { static int rockchip_dp_phy_power_on(struct phy *phy) { struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); + const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; int new_mode, ret = 0; u32 val; @@ -979,6 +984,8 @@ static int rockchip_dp_phy_power_on(struct phy *phy) if (ret) goto unlock_ret; + property_enable(tcphy, &cfg->uphy_dp_sel, 1); + ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL, val, val & DP_MODE_A2, 1000, PHY_MODE_SET_TIMEOUT); From 21bf9bc2a99e7b519b0035155209aeea2bc90696 Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Thu, 1 Mar 2018 16:25:11 +0100 Subject: [PATCH 54/56] dt-bindings: phy-rockchip-typec: move extcon property to be optional. The extcon property is used to detect the cable-state but some boards just connect the type-c phy to a regular USB-A connector without any power-delivery and thus no controller reporting the cable-state. So the extcon property is not really a required property, move it to be optional instead. Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt index f95cd492d6fc..960da7fcaa9e 100644 --- a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt @@ -14,6 +14,8 @@ Required properties: - resets : a list of phandle + reset specifier pairs - reset-names : string reset name, must be: "uphy", "uphy-pipe", "uphy-tcphy" + +Optional properties: - extcon : extcon specifier for the Power Delivery Required nodes : a sub-node is required for each port the phy provides. From ec1fcd7b7e6f50dd6e259ca76c6e41e2346b3afe Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Thu, 1 Mar 2018 16:25:10 +0100 Subject: [PATCH 55/56] phy: rockchip-typec: fall back to working in host-mode if extcon is missing. Right now the rockchip type-c phy does fail probing when no extcon is detected. Some boards get the cable-state via the extcon interface and have this supported, other boards seem to use the fusb302 chip or another but the driver currently does not seem to utilize the extcon interface to report the cable-state. And, other, just connect the type-c to a standard USB-A port so use no controller at all. A missing extcon shouldn't fail to probe, instead, should just fall back to working in host-mode if it cannot get the extcon. Fixes: c301b327aea898af ("arm64: dts: rockchip: add usb3-phy otg-port support for rk3399") Reported-by: Vicente Bergas Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/rockchip/phy-rockchip-typec.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 1c79785a5439..76a4b58ec771 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -821,6 +821,9 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy) u8 mode; int ret; + if (!edev) + return MODE_DFP_USB; + ufp = extcon_get_state(edev, EXTCON_USB); dp = extcon_get_state(edev, EXTCON_DISP_DP); @@ -1159,9 +1162,13 @@ static int rockchip_typec_phy_probe(struct platform_device *pdev) tcphy->extcon = extcon_get_edev_by_phandle(dev, 0); if (IS_ERR(tcphy->extcon)) { - if (PTR_ERR(tcphy->extcon) != -EPROBE_DEFER) - dev_err(dev, "Invalid or missing extcon\n"); - return PTR_ERR(tcphy->extcon); + if (PTR_ERR(tcphy->extcon) == -ENODEV) { + tcphy->extcon = NULL; + } else { + if (PTR_ERR(tcphy->extcon) != -EPROBE_DEFER) + dev_err(dev, "Invalid or missing extcon\n"); + return PTR_ERR(tcphy->extcon); + } } pm_runtime_enable(dev); From e7f4da4c44fe74e1c9277bac9b12ea1ef4eb70db Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 14 Mar 2018 11:02:18 +0100 Subject: [PATCH 56/56] phy: tegra: xusb: Uncomment register write The reason why this was originally commented out is no longer clear. The UPHY driver for SATA works fine with or without this change. The reset value of the XDIGCLK_EN bit is 0, so unless programmed by the bootloader this shouldn't make a difference anyway. Define a macro for this bit and uncomment the code. This also fixes a coverity issue brought to my attention by Rohith because not only is the XDIGCLK_EN field modification commented out, but also the register write which causes none of the earlier modifications of the register value to be written to the register and the value being overwritten. Reported-by: Rohith Seelaboyina Signed-off-by: Thierry Reding Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/tegra/xusb-tegra210.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/phy/tegra/xusb-tegra210.c b/drivers/phy/tegra/xusb-tegra210.c index 9d0689ebd28c..05bee32a3a4d 100644 --- a/drivers/phy/tegra/xusb-tegra210.c +++ b/drivers/phy/tegra/xusb-tegra210.c @@ -169,6 +169,7 @@ #define XUSB_PADCTL_UPHY_PLL_CTL2_CAL_EN (1 << 0) #define XUSB_PADCTL_UPHY_PLL_P0_CTL4 0x36c +#define XUSB_PADCTL_UPHY_PLL_CTL4_XDIGCLK_EN (1 << 19) #define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_EN (1 << 15) #define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT 12 #define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_MASK 0x3 @@ -537,11 +538,8 @@ static int tegra210_sata_uphy_enable(struct tegra_xusb_padctl *padctl, bool usb) value |= (XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SATA_VAL << XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT); - /* XXX PLL0_XDIGCLK_EN */ - /* - value &= ~(1 << 19); + value &= ~XUSB_PADCTL_UPHY_PLL_CTL4_XDIGCLK_EN; padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL4); - */ value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL1); value &= ~((XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_MDIV_MASK <<