diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.14/0032-phy-add-qcom-dwc3-phy.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.14/0032-phy-add-qcom-dwc3-phy.patch | 616 |
1 files changed, 616 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.14/0032-phy-add-qcom-dwc3-phy.patch b/target/linux/ipq806x/patches-4.14/0032-phy-add-qcom-dwc3-phy.patch new file mode 100644 index 0000000000..f392a71abb --- /dev/null +++ b/target/linux/ipq806x/patches-4.14/0032-phy-add-qcom-dwc3-phy.patch @@ -0,0 +1,616 @@ +From b9004f4fd23e4c614d71c972f3a9311665480e29 Mon Sep 17 00:00:00 2001 +From: Andy Gross <agross@codeaurora.org> +Date: Thu, 9 Mar 2017 08:19:18 +0100 +Subject: [PATCH 32/69] phy: add qcom dwc3 phy + +Signed-off-by: Andy Gross <agross@codeaurora.org> +--- + drivers/phy/Kconfig | 12 + + drivers/phy/Makefile | 1 + + drivers/phy/phy-qcom-dwc3.c | 575 ++++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 588 insertions(+) + create mode 100644 drivers/phy/phy-qcom-dwc3.c + +--- a/drivers/phy/qualcomm/Kconfig ++++ b/drivers/phy/qualcomm/Kconfig +@@ -56,3 +56,15 @@ + select GENERIC_PHY + help + Support for the USB HSIC ULPI compliant PHY on QCOM chipsets. ++ ++config PHY_QCOM_DWC3 ++ tristate "QCOM DWC3 USB PHY support" ++ depends on ARCH_QCOM ++ depends on HAS_IOMEM ++ depends on OF ++ select GENERIC_PHY ++ help ++ This option enables support for the Synopsis PHYs present inside the ++ Qualcomm USB3.0 DWC3 controller. This driver supports both HS and SS ++ PHY controllers. ++ +--- a/drivers/phy/qualcomm/Makefile ++++ b/drivers/phy/qualcomm/Makefile +@@ -8,3 +8,4 @@ + obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs-qmp-20nm.o + obj-$(CONFIG_PHY_QCOM_USB_HS) += phy-qcom-usb-hs.o + obj-$(CONFIG_PHY_QCOM_USB_HSIC) += phy-qcom-usb-hsic.o ++obj-$(CONFIG_PHY_QCOM_DWC3) += phy-qcom-dwc3.o +--- /dev/null ++++ b/drivers/phy/qualcomm/phy-qcom-dwc3.c +@@ -0,0 +1,575 @@ ++/* Copyright (c) 2014-2015, Code Aurora Forum. 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 <linux/clk.h> ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/phy/phy.h> ++#include <linux/platform_device.h> ++#include <linux/delay.h> ++ ++/** ++ * USB QSCRATCH Hardware registers ++ */ ++#define QSCRATCH_GENERAL_CFG (0x08) ++#define HSUSB_PHY_CTRL_REG (0x10) ++ ++/* PHY_CTRL_REG */ ++#define HSUSB_CTRL_DMSEHV_CLAMP BIT(24) ++#define HSUSB_CTRL_USB2_SUSPEND BIT(23) ++#define HSUSB_CTRL_UTMI_CLK_EN BIT(21) ++#define HSUSB_CTRL_UTMI_OTG_VBUS_VALID BIT(20) ++#define HSUSB_CTRL_USE_CLKCORE BIT(18) ++#define HSUSB_CTRL_DPSEHV_CLAMP BIT(17) ++#define HSUSB_CTRL_COMMONONN BIT(11) ++#define HSUSB_CTRL_ID_HV_CLAMP BIT(9) ++#define HSUSB_CTRL_OTGSESSVLD_CLAMP BIT(8) ++#define HSUSB_CTRL_CLAMP_EN BIT(7) ++#define HSUSB_CTRL_RETENABLEN BIT(1) ++#define HSUSB_CTRL_POR BIT(0) ++ ++/* QSCRATCH_GENERAL_CFG */ ++#define HSUSB_GCFG_XHCI_REV BIT(2) ++ ++/** ++ * USB QSCRATCH Hardware registers ++ */ ++#define SSUSB_PHY_CTRL_REG (0x00) ++#define SSUSB_PHY_PARAM_CTRL_1 (0x04) ++#define SSUSB_PHY_PARAM_CTRL_2 (0x08) ++#define CR_PROTOCOL_DATA_IN_REG (0x0c) ++#define CR_PROTOCOL_DATA_OUT_REG (0x10) ++#define CR_PROTOCOL_CAP_ADDR_REG (0x14) ++#define CR_PROTOCOL_CAP_DATA_REG (0x18) ++#define CR_PROTOCOL_READ_REG (0x1c) ++#define CR_PROTOCOL_WRITE_REG (0x20) ++ ++/* PHY_CTRL_REG */ ++#define SSUSB_CTRL_REF_USE_PAD BIT(28) ++#define SSUSB_CTRL_TEST_POWERDOWN BIT(27) ++#define SSUSB_CTRL_LANE0_PWR_PRESENT BIT(24) ++#define SSUSB_CTRL_SS_PHY_EN BIT(8) ++#define SSUSB_CTRL_SS_PHY_RESET BIT(7) ++ ++/* SSPHY control registers */ ++#define SSPHY_CTRL_RX_OVRD_IN_HI(lane) (0x1006 + 0x100 * lane) ++#define SSPHY_CTRL_TX_OVRD_DRV_LO(lane) (0x1002 + 0x100 * lane) ++ ++/* SSPHY SoC version specific values */ ++#define SSPHY_RX_EQ_VALUE 4 /* Override value for rx_eq */ ++#define SSPHY_TX_DEEMPH_3_5DB 23 /* Override value for transmit ++ preemphasis */ ++#define SSPHY_MPLL_VALUE 0 /* Override value for mpll */ ++ ++/* QSCRATCH PHY_PARAM_CTRL1 fields */ ++#define PHY_PARAM_CTRL1_TX_FULL_SWING_MASK 0x07f00000u ++#define PHY_PARAM_CTRL1_TX_DEEMPH_6DB_MASK 0x000fc000u ++#define PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB_MASK 0x00003f00u ++#define PHY_PARAM_CTRL1_LOS_BIAS_MASK 0x000000f8u ++ ++#define PHY_PARAM_CTRL1_MASK \ ++ (PHY_PARAM_CTRL1_TX_FULL_SWING_MASK | \ ++ PHY_PARAM_CTRL1_TX_DEEMPH_6DB_MASK | \ ++ PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB_MASK | \ ++ PHY_PARAM_CTRL1_LOS_BIAS_MASK) ++ ++#define PHY_PARAM_CTRL1_TX_FULL_SWING(x) \ ++ (((x) << 20) & PHY_PARAM_CTRL1_TX_FULL_SWING_MASK) ++#define PHY_PARAM_CTRL1_TX_DEEMPH_6DB(x) \ ++ (((x) << 14) & PHY_PARAM_CTRL1_TX_DEEMPH_6DB_MASK) ++#define PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB(x) \ ++ (((x) << 8) & PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB_MASK) ++#define PHY_PARAM_CTRL1_LOS_BIAS(x) \ ++ (((x) << 3) & PHY_PARAM_CTRL1_LOS_BIAS_MASK) ++ ++/* RX OVRD IN HI bits */ ++#define RX_OVRD_IN_HI_RX_RESET_OVRD BIT(13) ++#define RX_OVRD_IN_HI_RX_RX_RESET BIT(12) ++#define RX_OVRD_IN_HI_RX_EQ_OVRD BIT(11) ++#define RX_OVRD_IN_HI_RX_EQ_MASK 0x0700 ++#define RX_OVRD_IN_HI_RX_EQ_SHIFT 8 ++#define RX_OVRD_IN_HI_RX_EQ_EN_OVRD BIT(7) ++#define RX_OVRD_IN_HI_RX_EQ_EN BIT(6) ++#define RX_OVRD_IN_HI_RX_LOS_FILTER_OVRD BIT(5) ++#define RX_OVRD_IN_HI_RX_LOS_FILTER_MASK 0x0018 ++#define RX_OVRD_IN_HI_RX_RATE_OVRD BIT(2) ++#define RX_OVRD_IN_HI_RX_RATE_MASK 0x0003 ++ ++/* TX OVRD DRV LO register bits */ ++#define TX_OVRD_DRV_LO_AMPLITUDE_MASK 0x007F ++#define TX_OVRD_DRV_LO_PREEMPH_MASK 0x3F80 ++#define TX_OVRD_DRV_LO_PREEMPH_SHIFT 7 ++#define TX_OVRD_DRV_LO_EN BIT(14) ++ ++/* SS CAP register bits */ ++#define SS_CR_CAP_ADDR_REG BIT(0) ++#define SS_CR_CAP_DATA_REG BIT(0) ++#define SS_CR_READ_REG BIT(0) ++#define SS_CR_WRITE_REG BIT(0) ++ ++struct qcom_dwc3_usb_phy { ++ void __iomem *base; ++ struct device *dev; ++ struct clk *xo_clk; ++ struct clk *ref_clk; ++ u32 rx_eq; ++ u32 tx_deamp_3_5db; ++ u32 mpll; ++}; ++ ++struct qcom_dwc3_phy_drvdata { ++ struct phy_ops ops; ++ u32 clk_rate; ++}; ++ ++/** ++ * Write register and read back masked value to confirm it is written ++ * ++ * @base - QCOM DWC3 PHY base virtual address. ++ * @offset - register offset. ++ * @mask - register bitmask specifying what should be updated ++ * @val - value to write. ++ */ ++static inline void qcom_dwc3_phy_write_readback( ++ struct qcom_dwc3_usb_phy *phy_dwc3, u32 offset, ++ const u32 mask, u32 val) ++{ ++ u32 write_val, tmp = readl(phy_dwc3->base + offset); ++ ++ tmp &= ~mask; /* retain other bits */ ++ write_val = tmp | val; ++ ++ writel(write_val, phy_dwc3->base + offset); ++ ++ /* Read back to see if val was written */ ++ tmp = readl(phy_dwc3->base + offset); ++ tmp &= mask; /* clear other bits */ ++ ++ if (tmp != val) ++ dev_err(phy_dwc3->dev, "write: %x to QSCRATCH: %x FAILED\n", ++ val, offset); ++} ++ ++static int wait_for_latch(void __iomem *addr) ++{ ++ u32 retry = 10; ++ ++ while (true) { ++ if (!readl(addr)) ++ break; ++ ++ if (--retry == 0) ++ return -ETIMEDOUT; ++ ++ usleep_range(10, 20); ++ } ++ ++ return 0; ++} ++ ++/** ++ * Write SSPHY register ++ * ++ * @base - QCOM DWC3 PHY base virtual address. ++ * @addr - SSPHY address to write. ++ * @val - value to write. ++ */ ++static int qcom_dwc3_ss_write_phycreg(struct qcom_dwc3_usb_phy *phy_dwc3, ++ u32 addr, u32 val) ++{ ++ int ret; ++ ++ writel(addr, phy_dwc3->base + CR_PROTOCOL_DATA_IN_REG); ++ writel(SS_CR_CAP_ADDR_REG, phy_dwc3->base + CR_PROTOCOL_CAP_ADDR_REG); ++ ++ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_CAP_ADDR_REG); ++ if (ret) ++ goto err_wait; ++ ++ writel(val, phy_dwc3->base + CR_PROTOCOL_DATA_IN_REG); ++ writel(SS_CR_CAP_DATA_REG, phy_dwc3->base + CR_PROTOCOL_CAP_DATA_REG); ++ ++ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_CAP_DATA_REG); ++ if (ret) ++ goto err_wait; ++ ++ writel(SS_CR_WRITE_REG, phy_dwc3->base + CR_PROTOCOL_WRITE_REG); ++ ++ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_WRITE_REG); ++ ++err_wait: ++ if (ret) ++ dev_err(phy_dwc3->dev, "timeout waiting for latch\n"); ++ return ret; ++} ++ ++/** ++ * Read SSPHY register. ++ * ++ * @base - QCOM DWC3 PHY base virtual address. ++ * @addr - SSPHY address to read. ++ */ ++static int qcom_dwc3_ss_read_phycreg(void __iomem *base, u32 addr, u32 *val) ++{ ++ int ret; ++ ++ writel(addr, base + CR_PROTOCOL_DATA_IN_REG); ++ writel(SS_CR_CAP_ADDR_REG, base + CR_PROTOCOL_CAP_ADDR_REG); ++ ++ ret = wait_for_latch(base + CR_PROTOCOL_CAP_ADDR_REG); ++ if (ret) ++ goto err_wait; ++ ++ /* ++ * Due to hardware bug, first read of SSPHY register might be ++ * incorrect. Hence as workaround, SW should perform SSPHY register ++ * read twice, but use only second read and ignore first read. ++ */ ++ writel(SS_CR_READ_REG, base + CR_PROTOCOL_READ_REG); ++ ++ ret = wait_for_latch(base + CR_PROTOCOL_READ_REG); ++ if (ret) ++ goto err_wait; ++ ++ /* throwaway read */ ++ readl(base + CR_PROTOCOL_DATA_OUT_REG); ++ ++ writel(SS_CR_READ_REG, base + CR_PROTOCOL_READ_REG); ++ ++ ret = wait_for_latch(base + CR_PROTOCOL_READ_REG); ++ if (ret) ++ goto err_wait; ++ ++ *val = readl(base + CR_PROTOCOL_DATA_OUT_REG); ++ ++err_wait: ++ return ret; ++} ++ ++static int qcom_dwc3_hs_phy_init(struct phy *phy) ++{ ++ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy); ++ int ret; ++ u32 val; ++ ++ ret = clk_prepare_enable(phy_dwc3->xo_clk); ++ if (ret) ++ return ret; ++ ++ ret = clk_prepare_enable(phy_dwc3->ref_clk); ++ if (ret) { ++ clk_disable_unprepare(phy_dwc3->xo_clk); ++ return ret; ++ } ++ ++ /* ++ * HSPHY Initialization: Enable UTMI clock, select 19.2MHz fsel ++ * enable clamping, and disable RETENTION (power-on default is ENABLED) ++ */ ++ val = HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_DMSEHV_CLAMP | ++ HSUSB_CTRL_RETENABLEN | HSUSB_CTRL_COMMONONN | ++ HSUSB_CTRL_OTGSESSVLD_CLAMP | HSUSB_CTRL_ID_HV_CLAMP | ++ HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_UTMI_OTG_VBUS_VALID | ++ HSUSB_CTRL_UTMI_CLK_EN | HSUSB_CTRL_CLAMP_EN | 0x70; ++ ++ /* use core clock if external reference is not present */ ++ if (!phy_dwc3->xo_clk) ++ val |= HSUSB_CTRL_USE_CLKCORE; ++ ++ writel(val, phy_dwc3->base + HSUSB_PHY_CTRL_REG); ++ usleep_range(2000, 2200); ++ ++ /* Disable (bypass) VBUS and ID filters */ ++ writel(HSUSB_GCFG_XHCI_REV, phy_dwc3->base + QSCRATCH_GENERAL_CFG); ++ ++ return 0; ++} ++ ++static int qcom_dwc3_hs_phy_exit(struct phy *phy) ++{ ++ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy); ++ ++ clk_disable_unprepare(phy_dwc3->ref_clk); ++ clk_disable_unprepare(phy_dwc3->xo_clk); ++ ++ return 0; ++} ++ ++static int qcom_dwc3_ss_phy_init(struct phy *phy) ++{ ++ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy); ++ int ret; ++ u32 data = 0; ++ ++ ret = clk_prepare_enable(phy_dwc3->xo_clk); ++ if (ret) ++ return ret; ++ ++ ret = clk_prepare_enable(phy_dwc3->ref_clk); ++ if (ret) { ++ clk_disable_unprepare(phy_dwc3->xo_clk); ++ return ret; ++ } ++ ++ /* reset phy */ ++ data = readl(phy_dwc3->base + SSUSB_PHY_CTRL_REG); ++ writel(data | SSUSB_CTRL_SS_PHY_RESET, ++ phy_dwc3->base + SSUSB_PHY_CTRL_REG); ++ usleep_range(2000, 2200); ++ writel(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG); ++ ++ /* clear REF_PAD if we don't have XO clk */ ++ if (!phy_dwc3->xo_clk) ++ data &= ~SSUSB_CTRL_REF_USE_PAD; ++ else ++ data |= SSUSB_CTRL_REF_USE_PAD; ++ ++ writel(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG); ++ ++ /* wait for ref clk to become stable, this can take up to 30ms */ ++ msleep(30); ++ ++ data |= SSUSB_CTRL_SS_PHY_EN | SSUSB_CTRL_LANE0_PWR_PRESENT; ++ writel(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG); ++ ++ /* ++ * WORKAROUND: There is SSPHY suspend bug due to which USB enumerates ++ * in HS mode instead of SS mode. Workaround it by asserting ++ * LANE0.TX_ALT_BLOCK.EN_ALT_BUS to enable TX to use alt bus mode ++ */ ++ ret = qcom_dwc3_ss_read_phycreg(phy_dwc3->base, 0x102D, &data); ++ if (ret) ++ goto err_phy_trans; ++ ++ data |= (1 << 7); ++ ret = qcom_dwc3_ss_write_phycreg(phy_dwc3, 0x102D, data); ++ if (ret) ++ goto err_phy_trans; ++ ++ ret = qcom_dwc3_ss_read_phycreg(phy_dwc3->base, 0x1010, &data); ++ if (ret) ++ goto err_phy_trans; ++ ++ data &= ~0xff0; ++ data |= 0x20; ++ ret = qcom_dwc3_ss_write_phycreg(phy_dwc3, 0x1010, data); ++ if (ret) ++ goto err_phy_trans; ++ ++ /* ++ * Fix RX Equalization setting as follows ++ * LANE0.RX_OVRD_IN_HI. RX_EQ_EN set to 0 ++ * LANE0.RX_OVRD_IN_HI.RX_EQ_EN_OVRD set to 1 ++ * LANE0.RX_OVRD_IN_HI.RX_EQ set based on SoC version ++ * LANE0.RX_OVRD_IN_HI.RX_EQ_OVRD set to 1 ++ */ ++ ret = qcom_dwc3_ss_read_phycreg(phy_dwc3->base, ++ SSPHY_CTRL_RX_OVRD_IN_HI(0), &data); ++ if (ret) ++ goto err_phy_trans; ++ ++ data &= ~RX_OVRD_IN_HI_RX_EQ_EN; ++ data |= RX_OVRD_IN_HI_RX_EQ_EN_OVRD; ++ data &= ~RX_OVRD_IN_HI_RX_EQ_MASK; ++ data |= phy_dwc3->rx_eq << RX_OVRD_IN_HI_RX_EQ_SHIFT; ++ data |= RX_OVRD_IN_HI_RX_EQ_OVRD; ++ ret = qcom_dwc3_ss_write_phycreg(phy_dwc3, ++ SSPHY_CTRL_RX_OVRD_IN_HI(0), data); ++ if (ret) ++ goto err_phy_trans; ++ ++ /* ++ * Set EQ and TX launch amplitudes as follows ++ * LANE0.TX_OVRD_DRV_LO.PREEMPH set based on SoC version ++ * LANE0.TX_OVRD_DRV_LO.AMPLITUDE set to 110 ++ * LANE0.TX_OVRD_DRV_LO.EN set to 1. ++ */ ++ ret = qcom_dwc3_ss_read_phycreg(phy_dwc3->base, ++ SSPHY_CTRL_TX_OVRD_DRV_LO(0), &data); ++ if (ret) ++ goto err_phy_trans; ++ ++ data &= ~TX_OVRD_DRV_LO_PREEMPH_MASK; ++ data |= phy_dwc3->tx_deamp_3_5db << TX_OVRD_DRV_LO_PREEMPH_SHIFT; ++ data &= ~TX_OVRD_DRV_LO_AMPLITUDE_MASK; ++ data |= 0x6E; ++ data |= TX_OVRD_DRV_LO_EN; ++ ret = qcom_dwc3_ss_write_phycreg(phy_dwc3, ++ SSPHY_CTRL_TX_OVRD_DRV_LO(0), data); ++ if (ret) ++ goto err_phy_trans; ++ ++ qcom_dwc3_ss_write_phycreg(phy_dwc3, 0x30, phy_dwc3->mpll); ++ ++ /* ++ * Set the QSCRATCH PHY_PARAM_CTRL1 parameters as follows ++ * TX_FULL_SWING [26:20] amplitude to 110 ++ * TX_DEEMPH_6DB [19:14] to 32 ++ * TX_DEEMPH_3_5DB [13:8] set based on SoC version ++ * LOS_BIAS [7:3] to 9 ++ */ ++ data = readl(phy_dwc3->base + SSUSB_PHY_PARAM_CTRL_1); ++ ++ data &= ~PHY_PARAM_CTRL1_MASK; ++ ++ data |= PHY_PARAM_CTRL1_TX_FULL_SWING(0x6e) | ++ PHY_PARAM_CTRL1_TX_DEEMPH_6DB(0x20) | ++ PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB(phy_dwc3->tx_deamp_3_5db) | ++ PHY_PARAM_CTRL1_LOS_BIAS(0x9); ++ ++ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_PARAM_CTRL_1, ++ PHY_PARAM_CTRL1_MASK, data); ++ ++err_phy_trans: ++ return ret; ++} ++ ++static int qcom_dwc3_ss_phy_exit(struct phy *phy) ++{ ++ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy); ++ ++ /* Sequence to put SSPHY in low power state: ++ * 1. Clear REF_PHY_EN in PHY_CTRL_REG ++ * 2. Clear REF_USE_PAD in PHY_CTRL_REG ++ * 3. Set TEST_POWERED_DOWN in PHY_CTRL_REG to enable PHY retention ++ */ ++ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG, ++ SSUSB_CTRL_SS_PHY_EN, 0x0); ++ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG, ++ SSUSB_CTRL_REF_USE_PAD, 0x0); ++ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG, ++ SSUSB_CTRL_TEST_POWERDOWN, 0x0); ++ ++ clk_disable_unprepare(phy_dwc3->ref_clk); ++ clk_disable_unprepare(phy_dwc3->xo_clk); ++ ++ return 0; ++} ++ ++static const struct qcom_dwc3_phy_drvdata qcom_dwc3_hs_drvdata = { ++ .ops = { ++ .init = qcom_dwc3_hs_phy_init, ++ .exit = qcom_dwc3_hs_phy_exit, ++ .owner = THIS_MODULE, ++ }, ++ .clk_rate = 60000000, ++}; ++ ++static const struct qcom_dwc3_phy_drvdata qcom_dwc3_ss_drvdata = { ++ .ops = { ++ .init = qcom_dwc3_ss_phy_init, ++ .exit = qcom_dwc3_ss_phy_exit, ++ .owner = THIS_MODULE, ++ }, ++ .clk_rate = 125000000, ++}; ++ ++static const struct of_device_id qcom_dwc3_phy_table[] = { ++ { .compatible = "qcom,dwc3-hs-usb-phy", .data = &qcom_dwc3_hs_drvdata }, ++ { .compatible = "qcom,dwc3-ss-usb-phy", .data = &qcom_dwc3_ss_drvdata }, ++ { /* Sentinel */ } ++}; ++MODULE_DEVICE_TABLE(of, qcom_dwc3_phy_table); ++ ++static int qcom_dwc3_phy_probe(struct platform_device *pdev) ++{ ++ struct qcom_dwc3_usb_phy *phy_dwc3; ++ struct phy_provider *phy_provider; ++ struct phy *generic_phy; ++ struct resource *res; ++ const struct of_device_id *match; ++ const struct qcom_dwc3_phy_drvdata *data; ++ struct device_node *np; ++ ++ phy_dwc3 = devm_kzalloc(&pdev->dev, sizeof(*phy_dwc3), GFP_KERNEL); ++ if (!phy_dwc3) ++ return -ENOMEM; ++ ++ match = of_match_node(qcom_dwc3_phy_table, pdev->dev.of_node); ++ data = match->data; ++ ++ phy_dwc3->dev = &pdev->dev; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ phy_dwc3->base = devm_ioremap_resource(phy_dwc3->dev, res); ++ if (IS_ERR(phy_dwc3->base)) ++ return PTR_ERR(phy_dwc3->base); ++ ++ phy_dwc3->ref_clk = devm_clk_get(phy_dwc3->dev, "ref"); ++ if (IS_ERR(phy_dwc3->ref_clk)) { ++ dev_dbg(phy_dwc3->dev, "cannot get reference clock\n"); ++ return PTR_ERR(phy_dwc3->ref_clk); ++ } ++ ++ clk_set_rate(phy_dwc3->ref_clk, data->clk_rate); ++ ++ phy_dwc3->xo_clk = devm_clk_get(phy_dwc3->dev, "xo"); ++ if (IS_ERR(phy_dwc3->xo_clk)) { ++ dev_dbg(phy_dwc3->dev, "cannot get TCXO clock\n"); ++ phy_dwc3->xo_clk = NULL; ++ } ++ ++ /* Parse device node to probe HSIO settings */ ++ np = of_node_get(pdev->dev.of_node); ++ if (!of_compat_cmp(match->compatible, "qcom,dwc3-ss-usb-phy", ++ strlen(match->compatible))) { ++ ++ if (of_property_read_u32(np, "rx_eq", &phy_dwc3->rx_eq) || ++ of_property_read_u32(np, "tx_deamp_3_5db", ++ &phy_dwc3->tx_deamp_3_5db) || ++ of_property_read_u32(np, "mpll", &phy_dwc3->mpll)) { ++ ++ dev_err(phy_dwc3->dev, "cannot get HSIO settings from device node, using default values\n"); ++ ++ /* Default HSIO settings */ ++ phy_dwc3->rx_eq = SSPHY_RX_EQ_VALUE; ++ phy_dwc3->tx_deamp_3_5db = SSPHY_TX_DEEMPH_3_5DB; ++ phy_dwc3->mpll = SSPHY_MPLL_VALUE; ++ } ++ } ++ ++ generic_phy = devm_phy_create(phy_dwc3->dev, pdev->dev.of_node, ++ &data->ops); ++ ++ if (IS_ERR(generic_phy)) ++ return PTR_ERR(generic_phy); ++ ++ phy_set_drvdata(generic_phy, phy_dwc3); ++ platform_set_drvdata(pdev, phy_dwc3); ++ ++ phy_provider = devm_of_phy_provider_register(phy_dwc3->dev, ++ of_phy_simple_xlate); ++ ++ if (IS_ERR(phy_provider)) ++ return PTR_ERR(phy_provider); ++ ++ return 0; ++} ++ ++static struct platform_driver qcom_dwc3_phy_driver = { ++ .probe = qcom_dwc3_phy_probe, ++ .driver = { ++ .name = "qcom-dwc3-usb-phy", ++ .owner = THIS_MODULE, ++ .of_match_table = qcom_dwc3_phy_table, ++ }, ++}; ++ ++module_platform_driver(qcom_dwc3_phy_driver); ++ ++MODULE_ALIAS("platform:phy-qcom-dwc3"); ++MODULE_LICENSE("GPL v2"); ++MODULE_AUTHOR("Andy Gross <agross@codeaurora.org>"); ++MODULE_AUTHOR("Ivan T. Ivanov <iivanov@mm-sol.com>"); ++MODULE_DESCRIPTION("DesignWare USB3 QCOM PHY driver"); |