diff options
Diffstat (limited to 'target/linux/ramips/patches-4.4/0029-phy-usb-add-ralink-phy.patch')
| -rw-r--r-- | target/linux/ramips/patches-4.4/0029-phy-usb-add-ralink-phy.patch | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-4.4/0029-phy-usb-add-ralink-phy.patch b/target/linux/ramips/patches-4.4/0029-phy-usb-add-ralink-phy.patch new file mode 100644 index 0000000000..4068e9a2a5 --- /dev/null +++ b/target/linux/ramips/patches-4.4/0029-phy-usb-add-ralink-phy.patch @@ -0,0 +1,293 @@ +From b00b5eafa7e8d059bd0ce844e66f648916953270 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Sun, 3 Jan 2016 19:11:22 +0100 +Subject: [PATCH 2/3] phy: ralink-usb: add driver for Mediatek/Ralink + +Add a driver to setup the USB phy on Mediatek/Ralink SoCs. +The driver is trivial and only sets up power and host mode. + +Signed-off-by: John Crispin <blogic@openwrt.org> +--- + .../devicetree/bindings/phy/ralink-usb-phy.txt | 17 ++ + drivers/phy/Kconfig | 8 + + drivers/phy/Makefile | 1 + + drivers/phy/phy-ralink-usb.c | 171 ++++++++++++++++++++ + 4 files changed, 197 insertions(+) + create mode 100644 Documentation/devicetree/bindings/phy/ralink-usb-phy.txt + create mode 100644 drivers/phy/phy-ralink-usb.c + +--- /dev/null ++++ b/Documentation/devicetree/bindings/phy/ralink-usb-phy.txt +@@ -0,0 +1,17 @@ ++Mediatek/Ralink USB PHY ++ ++Required properties: ++ - compatible: ralink,rt3352-usbphy or mediatek,mt7620-usbphy ++ - #phy-cells: should be 0 ++ - resets: the two reset controllers for host and device ++ - reset-names: the names of the 2 reset controllers ++ ++Example: ++ ++usbphy: phy { ++ compatible = "mediatek,mt7620-usbphy"; ++ #phy-cells = <0>; ++ ++ resets = <&rstctrl 22 &rstctrl 25>; ++ reset-names = "host", "device"; ++}; +--- a/drivers/phy/Kconfig ++++ b/drivers/phy/Kconfig +@@ -341,6 +341,14 @@ 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 ++ help ++ This option enables support for the Ralink USB PHY found inside ++ RT3352 and MT7620. ++ + config PHY_STIH407_USB + tristate "STMicroelectronics USB2 picoPHY driver for STiH407 family" + depends on RESET_CONTROLLER +--- a/drivers/phy/Makefile ++++ b/drivers/phy/Makefile +@@ -48,3 +48,4 @@ obj-$(CONFIG_PHY_TUSB1210) += phy-tusb1 + obj-$(CONFIG_PHY_BRCMSTB_SATA) += phy-brcmstb-sata.o + obj-$(CONFIG_PHY_PISTACHIO_USB) += phy-pistachio-usb.o + obj-$(CONFIG_PHY_CYGNUS_PCIE) += phy-bcm-cygnus-pcie.o ++obj-$(CONFIG_PHY_RALINK_USB) += phy-ralink-usb.o +--- /dev/null ++++ b/drivers/phy/phy-ralink-usb.c +@@ -0,0 +1,228 @@ ++/* ++ * Allwinner ralink USB phy driver ++ * ++ * Copyright (C) 2016 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 OFS_U2_PHY_AC0 0x00 ++#define OFS_U2_PHY_AC1 0x04 ++#define OFS_U2_PHY_AC2 0x08 ++#define OFS_U2_PHY_ACR0 0x10 ++#define OFS_U2_PHY_ACR1 0x14 ++#define OFS_U2_PHY_ACR2 0x18 ++#define OFS_U2_PHY_ACR3 0x1C ++#define OFS_U2_PHY_ACR4 0x20 ++#define OFS_U2_PHY_AMON0 0x24 ++#define OFS_U2_PHY_DCR0 0x60 ++#define OFS_U2_PHY_DCR1 0x64 ++#define OFS_U2_PHY_DTM0 0x68 ++#define OFS_U2_PHY_DTM1 0x6C ++ ++#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) ++ ++struct ralink_usb_phy { ++ struct reset_control *rstdev; ++ struct reset_control *rsthost; ++ u32 clk; ++ struct phy *phy; ++ void __iomem *base; ++}; ++ ++static void u2_phy_w32(struct ralink_usb_phy *phy, u32 val, u32 reg) ++{ ++ iowrite32(val, phy->base + reg); ++} ++ ++static u32 u2_phy_r32(struct ralink_usb_phy *phy, u32 reg) ++{ ++ return ioread32(phy->base + reg); ++} ++ ++static void ++u2_phy_init(struct ralink_usb_phy *phy) ++{ ++ u2_phy_r32(phy, OFS_U2_PHY_AC2); ++ u2_phy_r32(phy, OFS_U2_PHY_ACR0); ++ u2_phy_r32(phy, OFS_U2_PHY_DCR0); ++ ++ u2_phy_w32(phy, 0x00ffff02, OFS_U2_PHY_DCR0); ++ u2_phy_r32(phy, OFS_U2_PHY_DCR0); ++ u2_phy_w32(phy, 0x00555502, OFS_U2_PHY_DCR0); ++ u2_phy_r32(phy, OFS_U2_PHY_DCR0); ++ u2_phy_w32(phy, 0x00aaaa02, OFS_U2_PHY_DCR0); ++ u2_phy_r32(phy, OFS_U2_PHY_DCR0); ++ u2_phy_w32(phy, 0x00000402, OFS_U2_PHY_DCR0); ++ u2_phy_r32(phy, OFS_U2_PHY_DCR0); ++ u2_phy_w32(phy, 0x0048086a, OFS_U2_PHY_AC0); ++ u2_phy_w32(phy, 0x4400001c, OFS_U2_PHY_AC1); ++ u2_phy_w32(phy, 0xc0200000, OFS_U2_PHY_ACR3); ++ u2_phy_w32(phy, 0x02000000, OFS_U2_PHY_DTM0); ++} ++ ++static int ralink_usb_phy_power_on(struct phy *_phy) ++{ ++ struct ralink_usb_phy *phy = phy_get_drvdata(_phy); ++ u32 t; ++ ++ /* enable the phy */ ++ rt_sysc_m32(0, phy->clk, RT_SYSC_REG_CLKCFG1); ++ ++ /* setup host mode */ ++ rt_sysc_m32(0, RT_SYSCFG1_USB0_HOST_MODE, RT_SYSC_REG_SYSCFG1); ++ ++ /* deassert the reset lines */ ++ reset_control_deassert(phy->rsthost); ++ reset_control_deassert(phy->rstdev); ++ ++ /* ++ * The SDK kernel had a delay of 100ms. however on device ++ * testing showed that 10ms is enough ++ */ ++ mdelay(10); ++ ++ if (!IS_ERR(phy->base)) ++ u2_phy_init(phy); ++ ++ /* print some status info */ ++ t = rt_sysc_r32(RT_SYSC_REG_USB_PHY_CFG); ++ dev_info(&phy->phy->dev, "remote usb device wakeup %s\n", ++ (t & UDEV_WAKEUP) ? ("enabled") : ("disabled")); ++ if (t & USB_PHY_UTMI_8B60M) ++ dev_info(&phy->phy->dev, "UTMI 8bit 60MHz\n"); ++ else ++ dev_info(&phy->phy->dev, "UTMI 16bit 30MHz\n"); ++ ++ return 0; ++} ++ ++static int ralink_usb_phy_power_off(struct phy *_phy) ++{ ++ struct ralink_usb_phy *phy = phy_get_drvdata(_phy); ++ ++ /* assert the reset lines */ ++ reset_control_assert(phy->rstdev); ++ reset_control_assert(phy->rsthost); ++ ++ /* disable the phy */ ++ rt_sysc_m32(phy->clk, 0, RT_SYSC_REG_CLKCFG1); ++ ++ return 0; ++} ++ ++static struct phy_ops ralink_usb_phy_ops = { ++ .power_on = ralink_usb_phy_power_on, ++ .power_off = ralink_usb_phy_power_off, ++ .owner = THIS_MODULE, ++}; ++ ++static const struct of_device_id ralink_usb_phy_of_match[] = { ++ { ++ .compatible = "ralink,rt3352-usbphy", ++ .data = (void *) (RT_CLKCFG1_UPHY1_CLK_EN | ++ RT_CLKCFG1_UPHY0_CLK_EN) ++ }, ++ { ++ .compatible = "mediatek,mt7620-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 resource *res; ++ struct device *dev = &pdev->dev; ++ struct phy_provider *phy_provider; ++ const struct of_device_id *match; ++ struct ralink_usb_phy *phy; ++ ++ phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); ++ if (!phy) ++ return -ENOMEM; ++ ++ match = of_match_device(ralink_usb_phy_of_match, &pdev->dev); ++ if (!match) ++ return -ENODEV; ++ ++ phy->clk = (int) match->data; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ phy->base = devm_ioremap_resource(&pdev->dev, res); ++ ++ phy->rsthost = devm_reset_control_get(&pdev->dev, "host"); ++ if (IS_ERR(phy->rsthost)) { ++ dev_err(dev, "host reset is missing\n"); ++ return PTR_ERR(phy->rsthost); ++ } ++ ++ phy->rstdev = devm_reset_control_get(&pdev->dev, "device"); ++ if (IS_ERR(phy->rstdev)) { ++ dev_err(dev, "device reset is missing\n"); ++ return PTR_ERR(phy->rstdev); ++ } ++ ++ phy->phy = devm_phy_create(dev, NULL, &ralink_usb_phy_ops); ++ if (IS_ERR(phy->phy)) { ++ dev_err(dev, "failed to create PHY\n"); ++ return PTR_ERR(phy->phy); ++ } ++ phy_set_drvdata(phy->phy, phy); ++ ++ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_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"); |