diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.19/0032-phy-add-qcom-dwc3-phy.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.19/0032-phy-add-qcom-dwc3-phy.patch | 614 |
1 files changed, 0 insertions, 614 deletions
diff --git a/target/linux/ipq806x/patches-4.19/0032-phy-add-qcom-dwc3-phy.patch b/target/linux/ipq806x/patches-4.19/0032-phy-add-qcom-dwc3-phy.patch deleted file mode 100644 index 0de0878f86..0000000000 --- a/target/linux/ipq806x/patches-4.19/0032-phy-add-qcom-dwc3-phy.patch +++ /dev/null @@ -1,614 +0,0 @@ -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"); |