--- /dev/null
+From a10fc0cb650be725157eca50e2ceb34efc281ac2 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Mon, 22 Apr 2013 23:20:03 +0200
+Subject: [PATCH 29/53] phy: usb: add ralink phy
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/phy/Kconfig | 5 ++
+ drivers/phy/Makefile | 1 +
+ drivers/phy/phy-ralink-usb.c | 175 ++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 181 insertions(+)
+ create mode 100644 drivers/phy/phy-ralink-usb.c
+
+diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
+index 47da573..96ef184 100644
+--- a/drivers/phy/Kconfig
++++ b/drivers/phy/Kconfig
+@@ -331,6 +331,11 @@ config PHY_XGENE
+ help
+ This option enables support for APM X-Gene SoC multi-purpose PHY.
+
++config PHY_RALINK_USB
++ tristate "Ralink USB PHY driver"
++ select GENERIC_PHY
++ depends on RALINK
++
+ config PHY_STIH407_USB
+ tristate "STMicroelectronics USB2 picoPHY driver for STiH407 family"
+ depends on RESET_CONTROLLER
+diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
+index a5b18c1..8dbf6cc 100644
+--- a/drivers/phy/Makefile
++++ b/drivers/phy/Makefile
+@@ -46,3 +46,4 @@ obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs-qmp-14nm.o
+ obj-$(CONFIG_PHY_TUSB1210) += phy-tusb1210.o
+ obj-$(CONFIG_PHY_BRCMSTB_SATA) += phy-brcmstb-sata.o
+ obj-$(CONFIG_PHY_PISTACHIO_USB) += phy-pistachio-usb.o
++obj-$(CONFIG_PHY_RALINK_USB) += phy-ralink-usb.o
+diff --git a/drivers/phy/phy-ralink-usb.c b/drivers/phy/phy-ralink-usb.c
+new file mode 100644
+index 0000000..6c74954
+--- /dev/null
++++ b/drivers/phy/phy-ralink-usb.c
+@@ -0,0 +1,175 @@
++/*
++ * Allwinner ralink USB phy driver
++ *
++ * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
++ *
++ * Based on code from
++ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
++ *
++ * 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.
++ */
++
++#include <linux/delay.h>
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/phy/phy.h>
++#include <linux/platform_device.h>
++#include <linux/reset.h>
++#include <linux/of_platform.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#define RT_SYSC_REG_SYSCFG1 0x014
++#define RT_SYSC_REG_CLKCFG1 0x030
++#define RT_SYSC_REG_USB_PHY_CFG 0x05c
++
++#define RT_RSTCTRL_UDEV BIT(25)
++#define RT_RSTCTRL_UHST BIT(22)
++#define RT_SYSCFG1_USB0_HOST_MODE BIT(10)
++
++#define MT7620_CLKCFG1_UPHY0_CLK_EN BIT(25)
++#define MT7620_CLKCFG1_UPHY1_CLK_EN BIT(22)
++#define RT_CLKCFG1_UPHY1_CLK_EN BIT(20)
++#define RT_CLKCFG1_UPHY0_CLK_EN BIT(18)
++
++#define USB_PHY_UTMI_8B60M BIT(1)
++#define UDEV_WAKEUP BIT(0)
++
++static atomic_t usb_pwr_ref = ATOMIC_INIT(0);
++static struct reset_control *rstdev;
++static struct reset_control *rsthost;
++static u32 phy_clk;
++static struct phy *rt_phy;
++
++static void usb_phy_enable(int state)
++{
++ if (state)
++ rt_sysc_m32(0, phy_clk, RT_SYSC_REG_CLKCFG1);
++ else
++ rt_sysc_m32(phy_clk, 0, RT_SYSC_REG_CLKCFG1);
++ mdelay(100);
++}
++
++static int ralink_usb_phy_init(struct phy *_phy)
++{
++ return 0;
++}
++
++static int ralink_usb_phy_exit(struct phy *_phy)
++{
++ return 0;
++}
++
++static int ralink_usb_phy_power_on(struct phy *_phy)
++{
++ if (atomic_inc_return(&usb_pwr_ref) == 1) {
++ int host = 1;
++ u32 t;
++
++ usb_phy_enable(1);
++
++ if (host) {
++ rt_sysc_m32(0, RT_SYSCFG1_USB0_HOST_MODE, RT_SYSC_REG_SYSCFG1);
++ if (!IS_ERR(rsthost))
++ reset_control_deassert(rsthost);
++ if (!IS_ERR(rstdev))
++ reset_control_deassert(rstdev);
++ } else {
++ rt_sysc_m32(RT_SYSCFG1_USB0_HOST_MODE, 0, RT_SYSC_REG_SYSCFG1);
++ if (!IS_ERR(rstdev))
++ reset_control_deassert(rstdev);
++ }
++ mdelay(100);
++
++ t = rt_sysc_r32(RT_SYSC_REG_USB_PHY_CFG);
++ dev_info(&_phy->dev, "remote usb device wakeup %s\n",
++ (t & UDEV_WAKEUP) ? ("enabbled") : ("disabled"));
++ if (t & USB_PHY_UTMI_8B60M)
++ dev_info(&_phy->dev, "UTMI 8bit 60MHz\n");
++ else
++ dev_info(&_phy->dev, "UTMI 16bit 30MHz\n");
++ }
++
++ return 0;
++}
++
++static int ralink_usb_phy_power_off(struct phy *_phy)
++{
++ if (atomic_dec_return(&usb_pwr_ref) == 0) {
++ usb_phy_enable(0);
++ if (!IS_ERR(rstdev))
++ reset_control_assert(rstdev);
++ if (!IS_ERR(rsthost))
++ reset_control_assert(rsthost);
++ }
++
++ return 0;
++}
++
++static struct phy_ops ralink_usb_phy_ops = {
++ .init = ralink_usb_phy_init,
++ .exit = ralink_usb_phy_exit,
++ .power_on = ralink_usb_phy_power_on,
++ .power_off = ralink_usb_phy_power_off,
++ .owner = THIS_MODULE,
++};
++
++static struct phy *ralink_usb_phy_xlate(struct device *dev,
++ struct of_phandle_args *args)
++{
++ return rt_phy;
++}
++
++static const struct of_device_id ralink_usb_phy_of_match[] = {
++ { .compatible = "ralink,rt3xxx-usbphy", .data = (void *) (RT_CLKCFG1_UPHY1_CLK_EN | RT_CLKCFG1_UPHY0_CLK_EN) },
++ { .compatible = "ralink,mt7620a-usbphy", .data = (void *) (MT7620_CLKCFG1_UPHY1_CLK_EN | MT7620_CLKCFG1_UPHY0_CLK_EN) },
++ { },
++};
++MODULE_DEVICE_TABLE(of, ralink_usb_phy_of_match);
++
++static int ralink_usb_phy_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ struct phy_provider *phy_provider;
++ const struct of_device_id *match;
++
++ match = of_match_device(ralink_usb_phy_of_match, &pdev->dev);
++ phy_clk = (int) match->data;
++
++ rsthost = devm_reset_control_get(&pdev->dev, "host");
++ rstdev = devm_reset_control_get(&pdev->dev, "device");
++
++ rt_phy = devm_phy_create(dev, NULL, &ralink_usb_phy_ops);
++ if (IS_ERR(rt_phy)) {
++ dev_err(dev, "failed to create PHY\n");
++ return PTR_ERR(rt_phy);
++ }
++
++ phy_provider = devm_of_phy_provider_register(dev, ralink_usb_phy_xlate);
++
++ return PTR_ERR_OR_ZERO(phy_provider);
++}
++
++static struct platform_driver ralink_usb_phy_driver = {
++ .probe = ralink_usb_phy_probe,
++ .driver = {
++ .of_match_table = ralink_usb_phy_of_match,
++ .name = "ralink-usb-phy",
++ }
++};
++module_platform_driver(ralink_usb_phy_driver);
++
++MODULE_DESCRIPTION("Ralink USB phy driver");
++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
++MODULE_LICENSE("GPL v2");
+--
+1.7.10.4
+
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