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path: root/target/linux/ipq806x/patches-5.4/0032-phy-add-qcom-dwc3-phy.patch
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-rw-r--r--target/linux/ipq806x/patches-5.4/0032-phy-add-qcom-dwc3-phy.patch614
1 files changed, 614 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-5.4/0032-phy-add-qcom-dwc3-phy.patch b/target/linux/ipq806x/patches-5.4/0032-phy-add-qcom-dwc3-phy.patch
new file mode 100644
index 0000000000..0de0878f86
--- /dev/null
+++ b/target/linux/ipq806x/patches-5.4/0032-phy-add-qcom-dwc3-phy.patch
@@ -0,0 +1,614 @@
+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>
+---
+
+--- a/drivers/phy/qualcomm/Kconfig
++++ b/drivers/phy/qualcomm/Kconfig
+@@ -65,3 +65,15 @@ config PHY_QCOM_USB_HSIC
+ 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
+@@ -9,3 +9,4 @@ obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-
+ obj-$(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 +1,578 @@
++/* 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>
++#include <linux/regmap.h>
++#include <linux/mfd/syscon.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 (0x30)
++#define SSUSB_PHY_PARAM_CTRL_1 (0x34)
++#define SSUSB_PHY_PARAM_CTRL_2 (0x38)
++#define CR_PROTOCOL_DATA_IN_REG (0x3c)
++#define CR_PROTOCOL_DATA_OUT_REG (0x40)
++#define CR_PROTOCOL_CAP_ADDR_REG (0x44)
++#define CR_PROTOCOL_CAP_DATA_REG (0x48)
++#define CR_PROTOCOL_READ_REG (0x4c)
++#define CR_PROTOCOL_WRITE_REG (0x50)
++
++/* 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 - Does this need 0x30? */
++#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 {
++ struct regmap *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;
++
++ tmp = regmap_read(phy_dwc3->base, offset, &tmp);
++ tmp &= ~mask; /* retain other bits */
++ write_val = tmp | val;
++
++ regmap_write(phy_dwc3->base, offset, write_val);
++
++ /* Read back to see if val was written */
++ regmap_read(phy_dwc3->base, offset, &tmp);
++ 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(struct regmap *base, u32 addr)
++{
++ u32 retry = 10, data;
++
++ while (true) {
++ regmap_read(base, addr, &data);
++ if (!data)
++ 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;
++
++ regmap_write(phy_dwc3->base, CR_PROTOCOL_DATA_IN_REG, addr);
++ regmap_write(phy_dwc3->base, CR_PROTOCOL_CAP_ADDR_REG, SS_CR_CAP_ADDR_REG);
++
++ ret = wait_for_latch(phy_dwc3->base, CR_PROTOCOL_CAP_ADDR_REG);
++ if (ret)
++ goto err_wait;
++
++ regmap_write(phy_dwc3->base, CR_PROTOCOL_DATA_IN_REG, val);
++ regmap_write(phy_dwc3->base, CR_PROTOCOL_CAP_DATA_REG, SS_CR_CAP_DATA_REG);
++
++ ret = wait_for_latch(phy_dwc3->base, CR_PROTOCOL_CAP_DATA_REG);
++ if (ret)
++ goto err_wait;
++
++ regmap_write(phy_dwc3->base, CR_PROTOCOL_WRITE_REG, SS_CR_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(struct regmap *base, u32 addr, u32 *val)
++{
++ int ret;
++
++ regmap_write(base, CR_PROTOCOL_DATA_IN_REG, addr);
++ regmap_write(base, CR_PROTOCOL_CAP_ADDR_REG, SS_CR_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.
++ */
++ regmap_write(base, CR_PROTOCOL_READ_REG, SS_CR_READ_REG);
++
++ ret = wait_for_latch(base, CR_PROTOCOL_READ_REG);
++ if (ret)
++ goto err_wait;
++
++ /* throwaway read */
++ regmap_read(base, CR_PROTOCOL_DATA_OUT_REG, &ret);
++
++ regmap_write(base, CR_PROTOCOL_READ_REG, SS_CR_READ_REG);
++
++ ret = wait_for_latch(base, CR_PROTOCOL_READ_REG);
++ if (ret)
++ goto err_wait;
++
++ regmap_read(base, CR_PROTOCOL_DATA_OUT_REG, val);
++
++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;
++
++ regmap_write(phy_dwc3->base, HSUSB_PHY_CTRL_REG, val);
++ usleep_range(2000, 2200);
++
++ /* Disable (bypass) VBUS and ID filters */
++ regmap_write(phy_dwc3->base, QSCRATCH_GENERAL_CFG, HSUSB_GCFG_XHCI_REV);
++
++ 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 */
++ regmap_read(phy_dwc3->base, SSUSB_PHY_CTRL_REG, &data);
++ regmap_write(phy_dwc3->base, SSUSB_PHY_CTRL_REG,
++ data | SSUSB_CTRL_SS_PHY_RESET);
++ usleep_range(2000, 2200);
++ regmap_write(phy_dwc3->base, SSUSB_PHY_CTRL_REG, data);
++
++ /* 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;
++
++ regmap_write(phy_dwc3->base, SSUSB_PHY_CTRL_REG, data);
++
++ /* 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;
++ regmap_write(phy_dwc3->base, SSUSB_PHY_CTRL_REG, data);
++
++ /*
++ * 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
++ */
++ regmap_read(phy_dwc3->base, SSUSB_PHY_PARAM_CTRL_1, &data);
++
++ 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;
++
++ phy_dwc3->base = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "regmap");
++ if (IS_ERR_OR_NULL(phy_dwc3->base))
++ return PTR_ERR_OR_ZERO(phy_dwc3->base) ? : -EINVAL;
++
++ 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");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 13:59:25 +0000