From 9c93da46f9c36ee37e363ea8f6e257bb4ef90965 Mon Sep 17 00:00:00 2001 From: Manivannan Sadhasivam Date: Fri, 25 Jan 2019 21:59:42 +0530 Subject: [PATCH 01/14] dt-bindings: arm: Document Bitmain BM1880 SoC Document Bitmain BM1880 SoC from Bitmain Technologies Ltd along with the Sophon Edge board. Signed-off-by: Manivannan Sadhasivam Reviewed-by: Rob Herring Acked-by: Arnd Bergmann --- .../devicetree/bindings/arm/bitmain.yaml | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/bitmain.yaml diff --git a/Documentation/devicetree/bindings/arm/bitmain.yaml b/Documentation/devicetree/bindings/arm/bitmain.yaml new file mode 100644 index 000000000000..0efdb4ac028e --- /dev/null +++ b/Documentation/devicetree/bindings/arm/bitmain.yaml @@ -0,0 +1,18 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/bitmain.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Bitmain platform device tree bindings + +maintainers: + - Manivannan Sadhasivam + +properties: + compatible: + items: + - enum: + - bitmain,sophon-edge + - const: bitmain,bm1880 +... From ea367d3846d8c3d7bf7377a896bbc2809fc8d0ca Mon Sep 17 00:00:00 2001 From: Manivannan Sadhasivam Date: Fri, 25 Jan 2019 22:05:43 +0530 Subject: [PATCH 02/14] arm64: Add ARCH_BITMAIN platform Add ARCH_BITMAIN for supporting Bitmain SoC platforms. Signed-off-by: Manivannan Sadhasivam Acked-by: Arnd Bergmann --- arch/arm64/Kconfig.platforms | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms index 251ecf34cb02..6bb7db9126f7 100644 --- a/arch/arm64/Kconfig.platforms +++ b/arch/arm64/Kconfig.platforms @@ -52,6 +52,11 @@ config ARCH_BERLIN help This enables support for Marvell Berlin SoC Family +config ARCH_BITMAIN + bool "Bitmain SoC Platforms" + help + This enables support for the Bitmain SoC Family. + config ARCH_BRCMSTB bool "Broadcom Set-Top-Box SoCs" select BRCMSTB_L2_IRQ From c8ec3743385213375232239b524fb6cde595fedd Mon Sep 17 00:00:00 2001 From: Manivannan Sadhasivam Date: Fri, 25 Jan 2019 22:07:02 +0530 Subject: [PATCH 03/14] arm64: dts: bitmain: Add BM1880 SoC support Add devicetree support for Bitmain BM1880 SoC, consisting of a Dual core ARM Cortex A53 subsystem, a Single core RISC-V subsystem and a Tensor Processor subsystem. Only ARM Cortex A53 Application processor subsystem support is enabled for now. Signed-off-by: Manivannan Sadhasivam Acked-by: Arnd Bergmann --- arch/arm64/boot/dts/Makefile | 1 + arch/arm64/boot/dts/bitmain/bm1880.dtsi | 119 ++++++++++++++++++++++++ 2 files changed, 120 insertions(+) create mode 100644 arch/arm64/boot/dts/bitmain/bm1880.dtsi diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile index 4690364d584b..5bc7533a12c7 100644 --- a/arch/arm64/boot/dts/Makefile +++ b/arch/arm64/boot/dts/Makefile @@ -7,6 +7,7 @@ subdir-y += amd subdir-y += amlogic subdir-y += apm subdir-y += arm +subdir-y += bitmain subdir-y += broadcom subdir-y += cavium subdir-y += exynos diff --git a/arch/arm64/boot/dts/bitmain/bm1880.dtsi b/arch/arm64/boot/dts/bitmain/bm1880.dtsi new file mode 100644 index 000000000000..55a4769e0de2 --- /dev/null +++ b/arch/arm64/boot/dts/bitmain/bm1880.dtsi @@ -0,0 +1,119 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (c) 2019 Linaro Ltd. + * Author: Manivannan Sadhasivam + */ + +#include + +/ { + compatible = "bitmain,bm1880"; + interrupt-parent = <&gic>; + #address-cells = <2>; + #size-cells = <2>; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x0>; + enable-method = "psci"; + }; + + cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x1>; + enable-method = "psci"; + }; + }; + + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + secmon@100000000 { + reg = <0x1 0x00000000 0x0 0x20000>; + no-map; + }; + + jpu@130000000 { + reg = <0x1 0x30000000 0x0 0x08000000>; // 128M + no-map; + }; + + vpu@138000000 { + reg = <0x1 0x38000000 0x0 0x08000000>; // 128M + no-map; + }; + }; + + psci { + compatible = "arm,psci-0.2"; + method = "smc"; + }; + + timer { + compatible = "arm,armv8-timer"; + interrupts = , + , + , + ; + }; + + soc { + compatible = "simple-bus"; + #address-cells = <2>; + #size-cells = <2>; + ranges; + + gic: interrupt-controller@50001000 { + compatible = "arm,gic-400"; + reg = <0x0 0x50001000 0x0 0x1000>, + <0x0 0x50002000 0x0 0x2000>; + interrupts = ; + interrupt-controller; + #interrupt-cells = <3>; + }; + + uart0: serial@58018000 { + compatible = "snps,dw-apb-uart"; + reg = <0x0 0x58018000 0x0 0x2000>; + interrupts = ; + reg-shift = <2>; + reg-io-width = <4>; + status = "disabled"; + }; + + uart1: serial@5801A000 { + compatible = "snps,dw-apb-uart"; + reg = <0x0 0x5801a000 0x0 0x2000>; + interrupts = ; + reg-shift = <2>; + reg-io-width = <4>; + status = "disabled"; + }; + + uart2: serial@5801C000 { + compatible = "snps,dw-apb-uart"; + reg = <0x0 0x5801c000 0x0 0x2000>; + interrupts = ; + reg-shift = <2>; + reg-io-width = <4>; + status = "disabled"; + }; + + uart3: serial@5801E000 { + compatible = "snps,dw-apb-uart"; + reg = <0x0 0x5801e000 0x0 0x2000>; + interrupts = ; + reg-shift = <2>; + reg-io-width = <4>; + status = "disabled"; + }; + }; +}; From 3bba4e2fdc2d6865b63d5e9dde2984033236420e Mon Sep 17 00:00:00 2001 From: Manivannan Sadhasivam Date: Fri, 25 Jan 2019 22:12:49 +0530 Subject: [PATCH 04/14] arm64: dts: bitmain: Add Sophon Egde board support Add devicetree support for Sophon Edge board from Bitmain based on BM1880 SoC. This board is one of the 96Boards Consumer and AI platform. More information about this board can be found in 96Boards product page: https://www.96boards.org/documentation/consumer/sophon-edge/ Only UART peripheral support is enabled for now. Signed-off-by: Manivannan Sadhasivam Acked-by: Arnd Bergmann --- arch/arm64/boot/dts/bitmain/Makefile | 3 ++ .../boot/dts/bitmain/bm1880-sophon-edge.dts | 50 +++++++++++++++++++ 2 files changed, 53 insertions(+) create mode 100644 arch/arm64/boot/dts/bitmain/Makefile create mode 100644 arch/arm64/boot/dts/bitmain/bm1880-sophon-edge.dts diff --git a/arch/arm64/boot/dts/bitmain/Makefile b/arch/arm64/boot/dts/bitmain/Makefile new file mode 100644 index 000000000000..be90a6071be0 --- /dev/null +++ b/arch/arm64/boot/dts/bitmain/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0+ + +dtb-$(CONFIG_ARCH_BITMAIN) += bm1880-sophon-edge.dtb diff --git a/arch/arm64/boot/dts/bitmain/bm1880-sophon-edge.dts b/arch/arm64/boot/dts/bitmain/bm1880-sophon-edge.dts new file mode 100644 index 000000000000..6a3255597138 --- /dev/null +++ b/arch/arm64/boot/dts/bitmain/bm1880-sophon-edge.dts @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (c) 2019 Linaro Ltd. + * Author: Manivannan Sadhasivam + */ + +/dts-v1/; + +#include "bm1880.dtsi" + +/ { + compatible = "bitmain,sophon-edge", "bitmain,bm1880"; + model = "Sophon Edge"; + + aliases { + serial0 = &uart0; + serial1 = &uart2; + serial2 = &uart1; + }; + + chosen { + stdout-path = "serial0:115200n8"; + }; + + memory@0 { + device_type = "memory"; + reg = <0x1 0x00000000 0x0 0x40000000>; // 1GB + }; + + uart_clk: uart-clk { + compatible = "fixed-clock"; + clock-frequency = <500000000>; + #clock-cells = <0>; + }; +}; + +&uart0 { + status = "okay"; + clocks = <&uart_clk>; +}; + +&uart1 { + status = "okay"; + clocks = <&uart_clk>; +}; + +&uart2 { + status = "okay"; + clocks = <&uart_clk>; +}; From 51d7d931d97563510a84c85cefb4d4869bb45ced Mon Sep 17 00:00:00 2001 From: Manivannan Sadhasivam Date: Fri, 25 Jan 2019 22:16:05 +0530 Subject: [PATCH 05/14] MAINTAINERS: Add entry for Bitmain SoC platform Add MAINTAINERS entry for Bitmain SoC platform with myself as the Maintainer. Signed-off-by: Manivannan Sadhasivam Acked-by: Arnd Bergmann --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 825dc2b7453d..3ddbd25c2307 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1372,6 +1372,13 @@ F: arch/arm/mach-aspeed/ F: arch/arm/boot/dts/aspeed-* N: aspeed +ARM/BITMAIN ARCHITECTURE +M: Manivannan Sadhasivam +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) +S: Maintained +F: arch/arm64/boot/dts/bitmain/ +F: Documentation/devicetree/bindings/arm/bitmain.yaml + ARM/CALXEDA HIGHBANK ARCHITECTURE M: Rob Herring L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) From 1d0bf7b9d308c01113eaead72a5578ca6fc01146 Mon Sep 17 00:00:00 2001 From: Sugaya Taichi Date: Wed, 27 Feb 2019 13:51:49 +0900 Subject: [PATCH 06/14] dt-bindings: sram: milbeaut: Add binding for Milbeaut smp-sram The Milbeaut M10V SoC needs a part of sram for smp, so this adds the M10V sram compatible and binding. Signed-off-by: Sugaya Taichi Reviewed-by: Rob Herring Signed-off-by: Arnd Bergmann --- .../bindings/sram/milbeaut-smp-sram.txt | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 Documentation/devicetree/bindings/sram/milbeaut-smp-sram.txt diff --git a/Documentation/devicetree/bindings/sram/milbeaut-smp-sram.txt b/Documentation/devicetree/bindings/sram/milbeaut-smp-sram.txt new file mode 100644 index 000000000000..194f6a3c1c1e --- /dev/null +++ b/Documentation/devicetree/bindings/sram/milbeaut-smp-sram.txt @@ -0,0 +1,24 @@ +Milbeaut SRAM for smp bringup + +Milbeaut SoCs use a part of the sram for the bringup of the secondary cores. +Once they get powered up in the bootloader, they stay at the specific part +of the sram. +Therefore the part needs to be added as the sub-node of mmio-sram. + +Required sub-node properties: +- compatible : should be "socionext,milbeaut-smp-sram" + +Example: + + sram: sram@0 { + compatible = "mmio-sram"; + reg = <0x0 0x10000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x0 0x10000>; + + smp-sram@f100 { + compatible = "socionext,milbeaut-smp-sram"; + reg = <0xf100 0x20>; + }; + }; From fd73403a4862842e89d7d2063cfe9e25bbe9c991 Mon Sep 17 00:00:00 2001 From: Sugaya Taichi Date: Wed, 27 Feb 2019 13:52:05 +0900 Subject: [PATCH 07/14] dt-bindings: arm: Add SMP enable-method for Milbeaut This adds a compatible string "socionext,milbeaut-m10v-smp" for Milbeaut M10V to the 32 bit ARM CPU device tree binding. Signed-off-by: Sugaya Taichi Reviewed-by: Rob Herring Signed-off-by: Arnd Bergmann --- Documentation/devicetree/bindings/arm/cpus.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml index 298c17b327c6..365dcf384d73 100644 --- a/Documentation/devicetree/bindings/arm/cpus.yaml +++ b/Documentation/devicetree/bindings/arm/cpus.yaml @@ -228,6 +228,7 @@ patternProperties: - renesas,r9a06g032-smp - rockchip,rk3036-smp - rockchip,rk3066-smp + - socionext,milbeaut-m10v-smp - ste,dbx500-smp cpu-release-addr: From f2a3aa163cf88103c9148ad63f086c6f677220ec Mon Sep 17 00:00:00 2001 From: Sugaya Taichi Date: Wed, 27 Feb 2019 13:52:25 +0900 Subject: [PATCH 08/14] dt-bindings: Add documentation for Milbeaut SoCs This adds a DT binding documentation for the M10V and its evaluation board. Signed-off-by: Sugaya Taichi Reviewed-by: Rob Herring Signed-off-by: Arnd Bergmann --- .../bindings/arm/socionext/milbeaut.yaml | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/socionext/milbeaut.yaml diff --git a/Documentation/devicetree/bindings/arm/socionext/milbeaut.yaml b/Documentation/devicetree/bindings/arm/socionext/milbeaut.yaml new file mode 100644 index 000000000000..aae53fc3cb1e --- /dev/null +++ b/Documentation/devicetree/bindings/arm/socionext/milbeaut.yaml @@ -0,0 +1,22 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/milbeaut.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Milbeaut platforms device tree bindings + +maintainers: + - Taichi Sugaya + - Takao Orito + +properties: + $nodename: + const: '/' + compatible: + oneOf: + - items: + - enum: + - socionext,milbeaut-m10v-evb + - const: socionext,sc2000a +... From 9fb29c734f9e98adc1f2f3c4629fe487cb93f2dd Mon Sep 17 00:00:00 2001 From: Sugaya Taichi Date: Wed, 27 Feb 2019 13:52:33 +0900 Subject: [PATCH 09/14] ARM: milbeaut: Add basic support for Milbeaut m10v SoC This adds the basic M10V SoC support under arch/arm. Since all cores are activated in the custom bootloader before booting linux, it is necessary to wait for the secondary-cores using cpu-enable- method and special sram. Signed-off-by: Sugaya Taichi Signed-off-by: Arnd Bergmann --- arch/arm/Kconfig | 2 + arch/arm/Makefile | 1 + arch/arm/mach-milbeaut/Kconfig | 20 +++++ arch/arm/mach-milbeaut/Makefile | 1 + arch/arm/mach-milbeaut/platsmp.c | 143 +++++++++++++++++++++++++++++++ 5 files changed, 167 insertions(+) create mode 100644 arch/arm/mach-milbeaut/Kconfig create mode 100644 arch/arm/mach-milbeaut/Makefile create mode 100644 arch/arm/mach-milbeaut/platsmp.c diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 664e918e2624..c8cb75288953 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -750,6 +750,8 @@ source "arch/arm/mach-mediatek/Kconfig" source "arch/arm/mach-meson/Kconfig" +source "arch/arm/mach-milbeaut/Kconfig" + source "arch/arm/mach-mmp/Kconfig" source "arch/arm/mach-moxart/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 9db3c584b2cb..00000e91ad65 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -190,6 +190,7 @@ machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0 machine-$(CONFIG_ARCH_MVEBU) += mvebu machine-$(CONFIG_ARCH_MXC) += imx machine-$(CONFIG_ARCH_MEDIATEK) += mediatek +machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut machine-$(CONFIG_ARCH_MXS) += mxs machine-$(CONFIG_ARCH_NETX) += netx machine-$(CONFIG_ARCH_NOMADIK) += nomadik diff --git a/arch/arm/mach-milbeaut/Kconfig b/arch/arm/mach-milbeaut/Kconfig new file mode 100644 index 000000000000..6a576fd8521e --- /dev/null +++ b/arch/arm/mach-milbeaut/Kconfig @@ -0,0 +1,20 @@ +# SPDX-License-Identifier: GPL-2.0 +menuconfig ARCH_MILBEAUT + bool "Socionext Milbeaut SoCs" + depends on ARCH_MULTI_V7 + select ARM_GIC + help + This enables support for Socionext Milbeaut SoCs + +if ARCH_MILBEAUT + +config ARCH_MILBEAUT_M10V + bool "Milbeaut SC2000/M10V platform" + select ARM_ARCH_TIMER + select MILBEAUT_TIMER + select PINCTRL + select PINCTRL_MILBEAUT + help + Support for Socionext's MILBEAUT M10V based systems + +endif diff --git a/arch/arm/mach-milbeaut/Makefile b/arch/arm/mach-milbeaut/Makefile new file mode 100644 index 000000000000..ce5ea062047a --- /dev/null +++ b/arch/arm/mach-milbeaut/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_SMP) += platsmp.o diff --git a/arch/arm/mach-milbeaut/platsmp.c b/arch/arm/mach-milbeaut/platsmp.c new file mode 100644 index 000000000000..591543c81399 --- /dev/null +++ b/arch/arm/mach-milbeaut/platsmp.c @@ -0,0 +1,143 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright: (C) 2018 Socionext Inc. + * Copyright: (C) 2015 Linaro Ltd. + */ + +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#define M10V_MAX_CPU 4 +#define KERNEL_UNBOOT_FLAG 0x12345678 + +static void __iomem *m10v_smp_base; + +static int m10v_boot_secondary(unsigned int l_cpu, struct task_struct *idle) +{ + unsigned int mpidr, cpu, cluster; + + if (!m10v_smp_base) + return -ENXIO; + + mpidr = cpu_logical_map(l_cpu); + cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); + + if (cpu >= M10V_MAX_CPU) + return -EINVAL; + + pr_info("%s: cpu %u l_cpu %u cluster %u\n", + __func__, cpu, l_cpu, cluster); + + writel(__pa_symbol(secondary_startup), m10v_smp_base + cpu * 4); + arch_send_wakeup_ipi_mask(cpumask_of(l_cpu)); + + return 0; +} + +static void m10v_smp_init(unsigned int max_cpus) +{ + unsigned int mpidr, cpu, cluster; + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "socionext,milbeaut-smp-sram"); + if (!np) + return; + + m10v_smp_base = of_iomap(np, 0); + if (!m10v_smp_base) + return; + + mpidr = read_cpuid_mpidr(); + cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); + pr_info("MCPM boot on cpu_%u cluster_%u\n", cpu, cluster); + + for (cpu = 0; cpu < M10V_MAX_CPU; cpu++) + writel(KERNEL_UNBOOT_FLAG, m10v_smp_base + cpu * 4); +} + +static void m10v_cpu_die(unsigned int l_cpu) +{ + gic_cpu_if_down(0); + v7_exit_coherency_flush(louis); + wfi(); +} + +static int m10v_cpu_kill(unsigned int l_cpu) +{ + unsigned int mpidr, cpu; + + mpidr = cpu_logical_map(l_cpu); + cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + + writel(KERNEL_UNBOOT_FLAG, m10v_smp_base + cpu * 4); + + return 1; +} + +static struct smp_operations m10v_smp_ops __initdata = { + .smp_prepare_cpus = m10v_smp_init, + .smp_boot_secondary = m10v_boot_secondary, + .cpu_die = m10v_cpu_die, + .cpu_kill = m10v_cpu_kill, +}; +CPU_METHOD_OF_DECLARE(m10v_smp, "socionext,milbeaut-m10v-smp", &m10v_smp_ops); + +static int m10v_pm_valid(suspend_state_t state) +{ + return (state == PM_SUSPEND_STANDBY) || (state == PM_SUSPEND_MEM); +} + +typedef void (*phys_reset_t)(unsigned long); +static phys_reset_t phys_reset; + +static int m10v_die(unsigned long arg) +{ + setup_mm_for_reboot(); + asm("wfi"); + /* Boot just like a secondary */ + phys_reset = (phys_reset_t)(unsigned long)virt_to_phys(cpu_reset); + phys_reset(virt_to_phys(cpu_resume)); + + return 0; +} + +static int m10v_pm_enter(suspend_state_t state) +{ + switch (state) { + case PM_SUSPEND_STANDBY: + asm("wfi"); + break; + case PM_SUSPEND_MEM: + cpu_pm_enter(); + cpu_suspend(0, m10v_die); + cpu_pm_exit(); + break; + } + return 0; +} + +static const struct platform_suspend_ops m10v_pm_ops = { + .valid = m10v_pm_valid, + .enter = m10v_pm_enter, +}; + +struct clk *m10v_clclk_register(struct device *cpu_dev); + +static int __init m10v_pm_init(void) +{ + if (of_machine_is_compatible("socionext,milbeaut-evb")) + suspend_set_ops(&m10v_pm_ops); + + return 0; +} +late_initcall(m10v_pm_init); From 172e90878d6ced1e59f2fa8e4469f9fb8077cbc9 Mon Sep 17 00:00:00 2001 From: Sugaya Taichi Date: Wed, 27 Feb 2019 13:52:41 +0900 Subject: [PATCH 10/14] dt-bindings: timer: Add Milbeaut M10V timer description Add DT bindings document for Milbeaut M10V timer. Signed-off-by: Sugaya Taichi Reviewed-by: Rob Herring Signed-off-by: Arnd Bergmann --- .../bindings/timer/socionext,milbeaut-timer.txt | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/socionext,milbeaut-timer.txt diff --git a/Documentation/devicetree/bindings/timer/socionext,milbeaut-timer.txt b/Documentation/devicetree/bindings/timer/socionext,milbeaut-timer.txt new file mode 100644 index 000000000000..ac44c4b67530 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/socionext,milbeaut-timer.txt @@ -0,0 +1,17 @@ +Milbeaut SoCs Timer Controller + +Required properties: + +- compatible : should be "socionext,milbeaut-timer". +- reg : Specifies base physical address and size of the registers. +- interrupts : The interrupt of the first timer. +- clocks: phandle to the input clk. + +Example: + +timer { + compatible = "socionext,milbeaut-timer"; + reg = <0x1e000050 0x20> + interrupts = <0 91 4>; + clocks = <&clk 4>; +}; From b58f28f306dbe60e2e711f35618efc518e507e64 Mon Sep 17 00:00:00 2001 From: Sugaya Taichi Date: Wed, 27 Feb 2019 13:53:20 +0900 Subject: [PATCH 11/14] clocksource/drivers/timer-milbeaut: Introduce timer for Milbeaut SoCs Add timer driver for Milbeaut SoCs series. The timer has two 32-bit width down counters, one of which is configured as a clockevent device and the other is configured as a clock source. Signed-off-by: Sugaya Taichi Acked-by: Daniel Lezcano Signed-off-by: Arnd Bergmann --- drivers/clocksource/Kconfig | 9 ++ drivers/clocksource/Makefile | 1 + drivers/clocksource/timer-milbeaut.c | 161 +++++++++++++++++++++++++++ 3 files changed, 171 insertions(+) create mode 100644 drivers/clocksource/timer-milbeaut.c diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index a9e26f6a81a1..9101b8fde93c 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -634,4 +634,13 @@ config GX6605S_TIMER help This option enables support for gx6605s SOC's timer. +config MILBEAUT_TIMER + bool "Milbeaut timer driver" if COMPILE_TEST + depends on OF + depends on ARM + select TIMER_OF + select CLKSRC_MMIO + help + Enables the support for Milbeaut timer driver. + endmenu diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index cdd210ff89ea..6f2543bd5fdb 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -55,6 +55,7 @@ obj-$(CONFIG_CLKSRC_TI_32K) += timer-ti-32k.o obj-$(CONFIG_CLKSRC_NPS) += timer-nps.o obj-$(CONFIG_OXNAS_RPS_TIMER) += timer-oxnas-rps.o obj-$(CONFIG_OWL_TIMER) += timer-owl.o +obj-$(CONFIG_MILBEAUT_TIMER) += timer-milbeaut.o obj-$(CONFIG_SPRD_TIMER) += timer-sprd.o obj-$(CONFIG_NPCM7XX_TIMER) += timer-npcm7xx.o obj-$(CONFIG_RDA_TIMER) += timer-rda.o diff --git a/drivers/clocksource/timer-milbeaut.c b/drivers/clocksource/timer-milbeaut.c new file mode 100644 index 000000000000..f2019a88e3ee --- /dev/null +++ b/drivers/clocksource/timer-milbeaut.c @@ -0,0 +1,161 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 Socionext Inc. + */ + +#include +#include +#include +#include +#include +#include "timer-of.h" + +#define MLB_TMR_TMCSR_OFS 0x0 +#define MLB_TMR_TMR_OFS 0x4 +#define MLB_TMR_TMRLR1_OFS 0x8 +#define MLB_TMR_TMRLR2_OFS 0xc +#define MLB_TMR_REGSZPCH 0x10 + +#define MLB_TMR_TMCSR_OUTL BIT(5) +#define MLB_TMR_TMCSR_RELD BIT(4) +#define MLB_TMR_TMCSR_INTE BIT(3) +#define MLB_TMR_TMCSR_UF BIT(2) +#define MLB_TMR_TMCSR_CNTE BIT(1) +#define MLB_TMR_TMCSR_TRG BIT(0) + +#define MLB_TMR_TMCSR_CSL_DIV2 0 +#define MLB_TMR_DIV_CNT 2 + +#define MLB_TMR_SRC_CH (1) +#define MLB_TMR_EVT_CH (0) + +#define MLB_TMR_SRC_CH_OFS (MLB_TMR_REGSZPCH * MLB_TMR_SRC_CH) +#define MLB_TMR_EVT_CH_OFS (MLB_TMR_REGSZPCH * MLB_TMR_EVT_CH) + +#define MLB_TMR_SRC_TMCSR_OFS (MLB_TMR_SRC_CH_OFS + MLB_TMR_TMCSR_OFS) +#define MLB_TMR_SRC_TMR_OFS (MLB_TMR_SRC_CH_OFS + MLB_TMR_TMR_OFS) +#define MLB_TMR_SRC_TMRLR1_OFS (MLB_TMR_SRC_CH_OFS + MLB_TMR_TMRLR1_OFS) +#define MLB_TMR_SRC_TMRLR2_OFS (MLB_TMR_SRC_CH_OFS + MLB_TMR_TMRLR2_OFS) + +#define MLB_TMR_EVT_TMCSR_OFS (MLB_TMR_EVT_CH_OFS + MLB_TMR_TMCSR_OFS) +#define MLB_TMR_EVT_TMR_OFS (MLB_TMR_EVT_CH_OFS + MLB_TMR_TMR_OFS) +#define MLB_TMR_EVT_TMRLR1_OFS (MLB_TMR_EVT_CH_OFS + MLB_TMR_TMRLR1_OFS) +#define MLB_TMR_EVT_TMRLR2_OFS (MLB_TMR_EVT_CH_OFS + MLB_TMR_TMRLR2_OFS) + +#define MLB_TIMER_RATING 500 + +static irqreturn_t mlb_timer_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *clk = dev_id; + struct timer_of *to = to_timer_of(clk); + u32 val; + + val = readl_relaxed(timer_of_base(to) + MLB_TMR_EVT_TMCSR_OFS); + val &= ~MLB_TMR_TMCSR_UF; + writel_relaxed(val, timer_of_base(to) + MLB_TMR_EVT_TMCSR_OFS); + + clk->event_handler(clk); + + return IRQ_HANDLED; +} + +static int mlb_set_state_periodic(struct clock_event_device *clk) +{ + struct timer_of *to = to_timer_of(clk); + u32 val = MLB_TMR_TMCSR_CSL_DIV2; + + writel_relaxed(val, timer_of_base(to) + MLB_TMR_EVT_TMCSR_OFS); + + writel_relaxed(to->of_clk.period, timer_of_base(to) + + MLB_TMR_EVT_TMRLR1_OFS); + val |= MLB_TMR_TMCSR_RELD | MLB_TMR_TMCSR_CNTE | + MLB_TMR_TMCSR_TRG | MLB_TMR_TMCSR_INTE; + writel_relaxed(val, timer_of_base(to) + MLB_TMR_EVT_TMCSR_OFS); + return 0; +} + +static int mlb_set_state_oneshot(struct clock_event_device *clk) +{ + struct timer_of *to = to_timer_of(clk); + u32 val = MLB_TMR_TMCSR_CSL_DIV2; + + writel_relaxed(val, timer_of_base(to) + MLB_TMR_EVT_TMCSR_OFS); + return 0; +} + +static int mlb_clkevt_next_event(unsigned long event, + struct clock_event_device *clk) +{ + struct timer_of *to = to_timer_of(clk); + + writel_relaxed(event, timer_of_base(to) + MLB_TMR_EVT_TMRLR1_OFS); + writel_relaxed(MLB_TMR_TMCSR_CSL_DIV2 | + MLB_TMR_TMCSR_CNTE | MLB_TMR_TMCSR_INTE | + MLB_TMR_TMCSR_TRG, timer_of_base(to) + + MLB_TMR_EVT_TMCSR_OFS); + return 0; +} + +static int mlb_config_clock_source(struct timer_of *to) +{ + writel_relaxed(0, timer_of_base(to) + MLB_TMR_SRC_TMCSR_OFS); + writel_relaxed(~0, timer_of_base(to) + MLB_TMR_SRC_TMR_OFS); + writel_relaxed(~0, timer_of_base(to) + MLB_TMR_SRC_TMRLR1_OFS); + writel_relaxed(~0, timer_of_base(to) + MLB_TMR_SRC_TMRLR2_OFS); + writel_relaxed(BIT(4) | BIT(1) | BIT(0), timer_of_base(to) + + MLB_TMR_SRC_TMCSR_OFS); + return 0; +} + +static int mlb_config_clock_event(struct timer_of *to) +{ + writel_relaxed(0, timer_of_base(to) + MLB_TMR_EVT_TMCSR_OFS); + return 0; +} + +static struct timer_of to = { + .flags = TIMER_OF_IRQ | TIMER_OF_BASE | TIMER_OF_CLOCK, + + .clkevt = { + .name = "mlb-clkevt", + .rating = MLB_TIMER_RATING, + .cpumask = cpu_possible_mask, + .features = CLOCK_EVT_FEAT_DYNIRQ | CLOCK_EVT_FEAT_ONESHOT, + .set_state_oneshot = mlb_set_state_oneshot, + .set_state_periodic = mlb_set_state_periodic, + .set_next_event = mlb_clkevt_next_event, + }, + + .of_irq = { + .flags = IRQF_TIMER | IRQF_IRQPOLL, + .handler = mlb_timer_interrupt, + }, +}; + +static u64 notrace mlb_timer_sched_read(void) +{ + return ~readl_relaxed(timer_of_base(&to) + MLB_TMR_SRC_TMR_OFS); +} + +static int __init mlb_timer_init(struct device_node *node) +{ + int ret; + unsigned long rate; + + ret = timer_of_init(node, &to); + if (ret) + return ret; + + rate = timer_of_rate(&to) / MLB_TMR_DIV_CNT; + mlb_config_clock_source(&to); + clocksource_mmio_init(timer_of_base(&to) + MLB_TMR_SRC_TMR_OFS, + node->name, rate, MLB_TIMER_RATING, 32, + clocksource_mmio_readl_down); + sched_clock_register(mlb_timer_sched_read, 32, rate); + mlb_config_clock_event(&to); + clockevents_config_and_register(&to.clkevt, timer_of_rate(&to), 15, + 0xffffffff); + return 0; +} +TIMER_OF_DECLARE(mlb_peritimer, "socionext,milbeaut-timer", + mlb_timer_init); From bbaad144231cd69a95a219f35cc7e72de4e649bf Mon Sep 17 00:00:00 2001 From: Sugaya Taichi Date: Wed, 27 Feb 2019 13:53:40 +0900 Subject: [PATCH 12/14] ARM: dts: milbeaut: Add device tree set for the Milbeaut M10V board Add devicetree for Milbeaut M10V SoC and M10V Evaluation board. Signed-off-by: Sugaya Taichi Signed-off-by: Arnd Bergmann --- arch/arm/boot/dts/Makefile | 1 + arch/arm/boot/dts/milbeaut-m10v-evb.dts | 32 +++++++++ arch/arm/boot/dts/milbeaut-m10v.dtsi | 95 +++++++++++++++++++++++++ 3 files changed, 128 insertions(+) create mode 100644 arch/arm/boot/dts/milbeaut-m10v-evb.dts create mode 100644 arch/arm/boot/dts/milbeaut-m10v.dtsi diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index bd40148a15b2..f697d87e99aa 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -1233,6 +1233,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \ mt7623n-bananapi-bpi-r2.dtb \ mt8127-moose.dtb \ mt8135-evbp1.dtb +dtb-$(CONFIG_ARCH_MILBEAUT) += milbeaut-m10v-evb.dtb dtb-$(CONFIG_ARCH_ZX) += zx296702-ad1.dtb dtb-$(CONFIG_ARCH_ASPEED) += \ aspeed-ast2500-evb.dtb \ diff --git a/arch/arm/boot/dts/milbeaut-m10v-evb.dts b/arch/arm/boot/dts/milbeaut-m10v-evb.dts new file mode 100644 index 000000000000..614f60c6b0a2 --- /dev/null +++ b/arch/arm/boot/dts/milbeaut-m10v-evb.dts @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Socionext Milbeaut M10V Evaluation Board */ +/dts-v1/; +#include "milbeaut-m10v.dtsi" + +/ { + model = "Socionext M10V EVB"; + compatible = "socionext,milbeaut-m10v-evb", "socionext,sc2000a"; + + aliases { + serial0 = &uart1; + }; + + chosen { + bootargs = "rootwait earlycon"; + stdout-path = "serial0:115200n8"; + }; + + clocks { + uclk40xi: uclk40xi { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <40000000>; + }; + }; + + memory@40000000 { + device_type = "memory"; + reg = <0x40000000 0x80000000>; + }; + +}; diff --git a/arch/arm/boot/dts/milbeaut-m10v.dtsi b/arch/arm/boot/dts/milbeaut-m10v.dtsi new file mode 100644 index 000000000000..aa7c6caeb750 --- /dev/null +++ b/arch/arm/boot/dts/milbeaut-m10v.dtsi @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include + +/ { + compatible = "socionext,sc2000a"; + interrupt-parent = <&gic>; + #address-cells = <1>; + #size-cells = <1>; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + enable-method = "socionext,milbeaut-m10v-smp"; + cpu@f00 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf00>; + }; + cpu@f01 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf01>; + }; + cpu@f02 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf02>; + }; + cpu@f03 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf03>; + }; + }; + + timer { /* The Generic Timer */ + compatible = "arm,armv7-timer"; + interrupts = , + , + , + ; + clock-frequency = <40000000>; + always-on; + }; + + soc { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + interrupt-parent = <&gic>; + + gic: interrupt-controller@1d000000 { + compatible = "arm,cortex-a7-gic"; + interrupt-controller; + #interrupt-cells = <3>; + reg = <0x1d001000 0x1000>, + <0x1d002000 0x1000>; /* CPU I/f base and size */ + }; + + timer@1e000050 { /* 32-bit Reload Timers */ + compatible = "socionext,milbeaut-timer"; + reg = <0x1e000050 0x20>; + interrupts = <0 91 4>; + }; + + uart1: serial@1e700010 { /* PE4, PE5 */ + /* Enable this as ttyUSI0 */ + compatible = "socionext,milbeaut-usio-uart"; + reg = <0x1e700010 0x10>; + interrupts = <0 141 0x4>, <0 149 0x4>; + interrupt-names = "rx", "tx"; + }; + + }; + + sram@0 { + compatible = "mmio-sram"; + reg = <0x0 0x10000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x0 0x10000>; + smp-sram@f100 { + compatible = "socionext,milbeaut-smp-sram"; + reg = <0xf100 0x20>; + }; + }; +}; From 4d0eacb02bc20424f8e69ca10ef67724a8427f4c Mon Sep 17 00:00:00 2001 From: Sugaya Taichi Date: Wed, 27 Feb 2019 13:53:52 +0900 Subject: [PATCH 13/14] ARM: configs: Add Milbeaut M10V defconfig This patch adds the minimal defconfig for the Milbeaut M10V. Signed-off-by: Sugaya Taichi Signed-off-by: Arnd Bergmann --- arch/arm/configs/milbeaut_m10v_defconfig | 119 +++++++++++++++++++++++ 1 file changed, 119 insertions(+) create mode 100644 arch/arm/configs/milbeaut_m10v_defconfig diff --git a/arch/arm/configs/milbeaut_m10v_defconfig b/arch/arm/configs/milbeaut_m10v_defconfig new file mode 100644 index 000000000000..7c07f9893a0f --- /dev/null +++ b/arch/arm/configs/milbeaut_m10v_defconfig @@ -0,0 +1,119 @@ +CONFIG_SYSVIPC=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_CGROUPS=y +CONFIG_BLK_DEV_INITRD=y +CONFIG_EMBEDDED=y +CONFIG_PERF_EVENTS=y +CONFIG_ARCH_MILBEAUT=y +CONFIG_ARCH_MILBEAUT_M10V=y +CONFIG_ARM_THUMBEE=y +# CONFIG_VDSO is not set +# CONFIG_CACHE_L2X0 is not set +CONFIG_ARM_ERRATA_430973=y +CONFIG_ARM_ERRATA_720789=y +CONFIG_ARM_ERRATA_754322=y +CONFIG_ARM_ERRATA_754327=y +CONFIG_ARM_ERRATA_764369=y +CONFIG_ARM_ERRATA_775420=y +CONFIG_ARM_ERRATA_798181=y +CONFIG_SMP=y +# CONFIG_SMP_ON_UP is not set +# CONFIG_ARM_CPU_TOPOLOGY is not set +CONFIG_HAVE_ARM_ARCH_TIMER=y +CONFIG_NR_CPUS=16 +CONFIG_THUMB2_KERNEL=y +# CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11 is not set +# CONFIG_ARM_PATCH_IDIV is not set +CONFIG_HIGHMEM=y +CONFIG_FORCE_MAX_ZONEORDER=12 +CONFIG_SECCOMP=y +CONFIG_KEXEC=y +CONFIG_EFI=y +CONFIG_CPU_FREQ=y +CONFIG_CPU_FREQ_STAT=y +CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y +CONFIG_CPU_FREQ_GOV_POWERSAVE=m +CONFIG_CPU_FREQ_GOV_USERSPACE=m +CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m +CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y +CONFIG_CPUFREQ_DT=y +CONFIG_QORIQ_CPUFREQ=y +CONFIG_CPU_IDLE=y +CONFIG_ARM_CPUIDLE=y +CONFIG_VFP=y +CONFIG_NEON=y +CONFIG_KERNEL_MODE_NEON=y +CONFIG_EFI_VARS=m +CONFIG_EFI_CAPSULE_LOADER=m +CONFIG_ARM_CRYPTO=y +CONFIG_CRYPTO_SHA1_ARM_NEON=m +CONFIG_CRYPTO_SHA1_ARM_CE=m +CONFIG_CRYPTO_SHA2_ARM_CE=m +CONFIG_CRYPTO_SHA512_ARM=m +CONFIG_CRYPTO_AES_ARM=m +CONFIG_CRYPTO_AES_ARM_BS=m +CONFIG_CRYPTO_AES_ARM_CE=m +CONFIG_CRYPTO_GHASH_ARM_CE=m +CONFIG_CRYPTO_CRC32_ARM_CE=m +CONFIG_CRYPTO_CHACHA20_NEON=m +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +CONFIG_PARTITION_ADVANCED=y +CONFIG_CMDLINE_PARTITION=y +CONFIG_CMA=y +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y +CONFIG_DMA_CMA=y +CONFIG_CMA_SIZE_MBYTES=64 +CONFIG_OF_OVERLAY=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_RAM=y +CONFIG_BLK_DEV_RAM_SIZE=65536 +CONFIG_SRAM=y +CONFIG_INPUT_FF_MEMLESS=m +CONFIG_INPUT_MATRIXKMAP=y +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +CONFIG_SERIO_LIBPS2=y +CONFIG_VT_HW_CONSOLE_BINDING=y +CONFIG_SERIAL_DEV_BUS=y +# CONFIG_HW_RANDOM is not set +CONFIG_GPIOLIB=y +CONFIG_GPIO_GENERIC_PLATFORM=y +# CONFIG_HWMON is not set +CONFIG_MEDIA_SUPPORT=m +CONFIG_MEDIA_CAMERA_SUPPORT=y +CONFIG_MEDIA_CONTROLLER=y +# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set +# CONFIG_HID is not set +# CONFIG_USB_SUPPORT is not set +CONFIG_SYNC_FILE=y +# CONFIG_VIRTIO_MENU is not set +# CONFIG_IOMMU_SUPPORT is not set +CONFIG_SOC_BRCMSTB=y +CONFIG_MEMORY=y +# CONFIG_ARM_PMU is not set +CONFIG_EXT4_FS=y +CONFIG_AUTOFS4_FS=y +CONFIG_MSDOS_FS=y +CONFIG_VFAT_FS=y +CONFIG_NTFS_FS=y +CONFIG_TMPFS=y +CONFIG_TMPFS_POSIX_ACL=y +CONFIG_CONFIGFS_FS=y +# CONFIG_MISC_FILESYSTEMS is not set +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_ISO8859_1=y +CONFIG_NLS_UTF8=y +CONFIG_KEYS=y +CONFIG_CRYPTO_MANAGER=y +# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set +CONFIG_CRYPTO_SEQIV=m +# CONFIG_CRYPTO_ECHAINIV is not set +CONFIG_CRYPTO_AES=y +# CONFIG_CRYPTO_HW is not set +CONFIG_CRC_CCITT=m +CONFIG_CRC_ITU_T=m +CONFIG_PRINTK_TIME=y +CONFIG_MAGIC_SYSRQ=y From 2781204594c2705868c1f9388f80ae6cdcdabd22 Mon Sep 17 00:00:00 2001 From: Sugaya Taichi Date: Wed, 27 Feb 2019 13:54:00 +0900 Subject: [PATCH 14/14] ARM: multi_v7_defconfig: add ARCH_MILBEAUT and ARCH_MILBEAUT_M10V Add and enable the Milbeaut M10V architecture. These configs select those of the clock, timer and serial driver for M10V. Signed-off-by: Sugaya Taichi Signed-off-by: Arnd Bergmann --- arch/arm/configs/multi_v7_defconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 5bee34a7ff2e..6753805e520d 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -54,6 +54,8 @@ CONFIG_SOC_VF610=y CONFIG_ARCH_KEYSTONE=y CONFIG_ARCH_MEDIATEK=y CONFIG_ARCH_MESON=y +CONFIG_ARCH_MILBEAUT=y +CONFIG_ARCH_MILBEAUT_M10V=y CONFIG_ARCH_MVEBU=y CONFIG_MACH_ARMADA_370=y CONFIG_MACH_ARMADA_375=y