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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 <martin.blumenstingl@googlemail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Martin Blumenstingl 2018-01-28 21:22:43 +01:00 committed by Kishon Vijay Abraham I
parent bc4a0241d4
commit 05818862bc
2 changed files with 2 additions and 14 deletions
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1
drivers/phy/amlogic/Kconfig
View File

@ -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

15
drivers/phy/amlogic/phy-meson-gxl-usb2.c
View File

@ -20,7 +20,6 @@
#include <linux/reset.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/usb/of.h>
/* 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);