From: Ansuel Smith Date: Mon, 10 Aug 2020 11:56:15 +0000 (+0200) Subject: ipq806x: replace phy dwc3 patch with upstream version X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=0c45ad41e15e2255;p=openwrt%2Fstaging%2Fneocturne.git ipq806x: replace phy dwc3 patch with upstream version - Replace dwc3 phy patch with upstream version - Rework the dts to use the upstream bindings - Update changed config flags - Rename module to reflect config name Signed-off-by: Ansuel Smith [fix qcom,tx-deamp_3_5db typo, refresh patches, rename kmod] Signed-off-by: Adrian Schmutzler Tested-by: Paul Blazejowski [R7800] --- diff --git a/package/kernel/linux/modules/usb.mk b/package/kernel/linux/modules/usb.mk index e4f6a226fd..5db0244968 100644 --- a/package/kernel/linux/modules/usb.mk +++ b/package/kernel/linux/modules/usb.mk @@ -70,22 +70,22 @@ endef $(eval $(call KernelPackage,usb-phy-nop)) -define KernelPackage/usb-phy-qcom-dwc3 - TITLE:=DWC3 USB QCOM PHY driver +define KernelPackage/phy-qcom-ipq806x-usb + TITLE:=Qualcomm IPQ806x DWC3 USB PHY driver DEPENDS:=@(TARGET_ipq40xx||TARGET_ipq806x) - KCONFIG:= CONFIG_PHY_QCOM_DWC3 + KCONFIG:= CONFIG_PHY_QCOM_IPQ806X_USB FILES:= \ - $(LINUX_DIR)/drivers/phy/qualcomm/phy-qcom-dwc3.ko - AUTOLOAD:=$(call AutoLoad,45,phy-qcom-dwc3,1) + $(LINUX_DIR)/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.ko + AUTOLOAD:=$(call AutoLoad,45,phy-qcom-ipq806x-usb,1) $(call AddDepends/usb) endef -define KernelPackage/usb-phy-qcom-dwc3/description +define KernelPackage/phy-qcom-ipq806x-usb/description This driver provides support for the integrated DesignWare USB3 IP Core within the QCOM SoCs. endef -$(eval $(call KernelPackage,usb-phy-qcom-dwc3)) +$(eval $(call KernelPackage,phy-qcom-ipq806x-usb)) define KernelPackage/phy-ath79-usb diff --git a/target/linux/ipq806x/Makefile b/target/linux/ipq806x/Makefile index 98ea35e0a6..14f65474f9 100644 --- a/target/linux/ipq806x/Makefile +++ b/target/linux/ipq806x/Makefile @@ -19,7 +19,7 @@ DEFAULT_PACKAGES += \ kmod-leds-gpio kmod-gpio-button-hotplug swconfig \ kmod-ata-ahci kmod-ata-ahci-platform \ kmod-usb-ohci kmod-usb2 kmod-usb-ledtrig-usbport \ - kmod-usb-phy-qcom-dwc3 kmod-usb3 kmod-usb-dwc3-qcom \ + kmod-phy-qcom-ipq806x-usb kmod-usb3 kmod-usb-dwc3-qcom \ kmod-ath10k-ct wpad-basic \ uboot-envtools diff --git a/target/linux/ipq806x/files-5.4/arch/arm/boot/dts/qcom-ipq8064-v2.0.dtsi b/target/linux/ipq806x/files-5.4/arch/arm/boot/dts/qcom-ipq8064-v2.0.dtsi index 5d762046af..c0bcee783d 100644 --- a/target/linux/ipq806x/files-5.4/arch/arm/boot/dts/qcom-ipq8064-v2.0.dtsi +++ b/target/linux/ipq806x/files-5.4/arch/arm/boot/dts/qcom-ipq8064-v2.0.dtsi @@ -31,13 +31,13 @@ }; &ss_phy_0 { - rx_eq = <2>; - tx_deamp_3_5db = <32>; - mpll = <0xa0>; + qcom,rx-eq = <2>; + qcom,tx-deamp_3_5db = <32>; + qcom,mpll = <5>; }; &ss_phy_1 { - rx_eq = <2>; - tx_deamp_3_5db = <32>; - mpll = <0xa0>; + qcom,rx-eq = <2>; + qcom,tx-deamp_3_5db = <32>; + qcom,mpll = <5>; }; diff --git a/target/linux/ipq806x/files-5.4/arch/arm/boot/dts/qcom-ipq8065.dtsi b/target/linux/ipq806x/files-5.4/arch/arm/boot/dts/qcom-ipq8065.dtsi index fad39cf008..0a58c97095 100644 --- a/target/linux/ipq806x/files-5.4/arch/arm/boot/dts/qcom-ipq8065.dtsi +++ b/target/linux/ipq806x/files-5.4/arch/arm/boot/dts/qcom-ipq8065.dtsi @@ -46,15 +46,15 @@ }; &ss_phy_0 { - rx_eq = <2>; - tx_deamp_3_5db = <32>; - mpll = <0xa0>; + qcom,rx-eq = <2>; + qcom,tx-deamp_3_5db = <32>; + qcom,mpll = <5>; }; &ss_phy_1 { - rx_eq = <2>; - tx_deamp_3_5db = <32>; - mpll = <0xa0>; + qcom,rx-eq = <2>; + qcom,tx-deamp_3_5db = <32>; + qcom,mpll = <5>; }; &opp_table0 { 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 deleted file mode 100644 index 3eabba0ab4..0000000000 --- a/target/linux/ipq806x/patches-5.4/0032-phy-add-qcom-dwc3-phy.patch +++ /dev/null @@ -1,614 +0,0 @@ -From b9004f4fd23e4c614d71c972f3a9311665480e29 Mon Sep 17 00:00:00 2001 -From: Andy Gross -Date: Thu, 9 Mar 2017 08:19:18 +0100 -Subject: [PATCH 32/69] phy: add qcom dwc3 phy - -Signed-off-by: Andy Gross ---- - ---- a/drivers/phy/qualcomm/Kconfig -+++ b/drivers/phy/qualcomm/Kconfig -@@ -91,3 +91,15 @@ 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 -@@ -10,3 +10,4 @@ obj-$(CONFIG_PHY_QCOM_UFS_14NM) += phy- - obj-$(CONFIG_PHY_QCOM_UFS_20NM) += phy-qcom-ufs-qmp-20nm.o - obj-$(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 -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+ -+/** -+ * 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 "); -+MODULE_AUTHOR("Ivan T. Ivanov "); -+MODULE_DESCRIPTION("DesignWare USB3 QCOM PHY driver"); diff --git a/target/linux/ipq806x/patches-5.4/0077-phy-dwc3-qcom-fix-kernel-5_4.patch b/target/linux/ipq806x/patches-5.4/0077-phy-dwc3-qcom-fix-kernel-5_4.patch deleted file mode 100644 index 11893ea11f..0000000000 --- a/target/linux/ipq806x/patches-5.4/0077-phy-dwc3-qcom-fix-kernel-5_4.patch +++ /dev/null @@ -1,29 +0,0 @@ ---- a/drivers/phy/qualcomm/phy-qcom-dwc3.c -+++ b/drivers/phy/qualcomm/phy-qcom-dwc3.c -@@ -491,7 +491,6 @@ static int qcom_dwc3_phy_probe(struct pl - 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; -@@ -505,7 +504,17 @@ static int qcom_dwc3_phy_probe(struct pl - - phy_dwc3->dev = &pdev->dev; - -- phy_dwc3->base = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "regmap"); -+ np = of_parse_phandle(pdev->dev.of_node, "regmap", 0); -+ if (!np) -+ return -ENODEV; -+ -+ if (!of_device_is_compatible(np, "syscon")) -+ return -EINVAL; -+ -+ phy_dwc3->base = device_node_to_regmap(np); -+ -+ of_node_put(np); -+ - if (IS_ERR_OR_NULL(phy_dwc3->base)) - return PTR_ERR_OR_ZERO(phy_dwc3->base) ? : -EINVAL; - diff --git a/target/linux/ipq806x/patches-5.4/083-ipq8064-dtsi-additions.patch b/target/linux/ipq806x/patches-5.4/083-ipq8064-dtsi-additions.patch index bd3c972f5c..9db5190dae 100644 --- a/target/linux/ipq806x/patches-5.4/083-ipq8064-dtsi-additions.patch +++ b/target/linux/ipq806x/patches-5.4/083-ipq8064-dtsi-additions.patch @@ -718,16 +718,16 @@ + }; + + hs_phy_0: hs_phy_0 { -+ compatible = "qcom,dwc3-hs-usb-phy"; -+ regmap = <&usb3_0>; ++ compatible = "qcom,ipq806x-usb-phy-hs"; ++ reg = <0x110f8800 0x30>; + clocks = <&gcc USB30_0_UTMI_CLK>; + clock-names = "ref"; + #phy-cells = <0>; + }; + + ss_phy_0: ss_phy_0 { -+ compatible = "qcom,dwc3-ss-usb-phy"; -+ regmap = <&usb3_0>; ++ compatible = "qcom,ipq806x-usb-phy-ss"; ++ reg = <0x110f8830 0x30>; + clocks = <&gcc USB30_0_MASTER_CLK>; + clock-names = "ref"; + #phy-cells = <0>; @@ -760,16 +760,16 @@ + }; + + hs_phy_1: hs_phy_1 { -+ compatible = "qcom,dwc3-hs-usb-phy"; -+ regmap = <&usb3_1>; ++ compatible = "qcom,ipq806x-usb-phy-hs"; ++ reg = <0x100f8800 0x30>; + clocks = <&gcc USB30_1_UTMI_CLK>; + clock-names = "ref"; + #phy-cells = <0>; + }; + + ss_phy_1: ss_phy_1 { -+ compatible = "qcom,dwc3-ss-usb-phy"; -+ regmap = <&usb3_1>; ++ compatible = "qcom,ipq806x-usb-phy-ss"; ++ reg = <0x100f8830 0x30>; + clocks = <&gcc USB30_1_MASTER_CLK>; + clock-names = "ref"; + #phy-cells = <0>; diff --git a/target/linux/ipq806x/patches-5.4/095-1-v5.9-phy-qualcomm-add-qcom-ipq806x-dwc-usb-phy-driver.patch b/target/linux/ipq806x/patches-5.4/095-1-v5.9-phy-qualcomm-add-qcom-ipq806x-dwc-usb-phy-driver.patch new file mode 100644 index 0000000000..47dc455715 --- /dev/null +++ b/target/linux/ipq806x/patches-5.4/095-1-v5.9-phy-qualcomm-add-qcom-ipq806x-dwc-usb-phy-driver.patch @@ -0,0 +1,621 @@ +From ef19b117b83466e1c030368101a24367a34be7f0 Mon Sep 17 00:00:00 2001 +From: Ansuel Smith +Date: Fri, 17 Jul 2020 15:16:31 +0200 +Subject: phy: qualcomm: add qcom ipq806x dwc usb phy driver + +This has lost in the original push for the dwc3 qcom driver. +This is needed for ipq806x SoC as without this the usb ports +doesn't work at all. + +Signed-off-by: Andy Gross +Signed-off-by: Ansuel Smith +Tested-by: Jonathan McDowell +Link: https://lore.kernel.org/r/20200717131635.11076-1-ansuelsmth@gmail.com +Signed-off-by: Vinod Koul +--- + +Light modification to Kconfig as some config are missing in kernel 5.4 + + drivers/phy/qualcomm/Kconfig | 10 + + drivers/phy/qualcomm/Makefile | 1 + + drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c | 571 ++++++++++++++++++++++++++++ + 3 files changed, 582 insertions(+) + create mode 100644 drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c + +--- a/drivers/phy/qualcomm/Kconfig ++++ b/drivers/phy/qualcomm/Kconfig +@@ -91,3 +91,13 @@ config PHY_QCOM_USB_HSIC + select GENERIC_PHY + help + Support for the USB HSIC ULPI compliant PHY on QCOM chipsets. ++ ++config PHY_QCOM_IPQ806X_USB ++ tristate "Qualcomm IPQ806x DWC3 USB PHY driver" ++ depends on HAS_IOMEM ++ depends on OF && (ARCH_QCOM || COMPILE_TEST) ++ select GENERIC_PHY ++ help ++ This option enables support for the Synopsis PHYs present inside the ++ Qualcomm USB3.0 DWC3 controller on ipq806x SoC. This driver supports ++ both HS and SS PHY controllers. +--- a/drivers/phy/qualcomm/Makefile ++++ b/drivers/phy/qualcomm/Makefile +@@ -10,3 +10,4 @@ obj-$(CONFIG_PHY_QCOM_UFS_14NM) += phy- + obj-$(CONFIG_PHY_QCOM_UFS_20NM) += 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_IPQ806X_USB) += phy-qcom-ipq806x-usb.o +--- /dev/null ++++ b/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c +@@ -0,0 +1,571 @@ ++// SPDX-License-Identifier: GPL-2.0-only ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++/* 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 - 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 */ ++/* Override value for transmit preemphasis */ ++#define SSPHY_TX_DEEMPH_3_5DB 23 ++/* Override value for mpll */ ++#define SSPHY_MPLL_VALUE 0 ++ ++/* QSCRATCH PHY_PARAM_CTRL1 fields */ ++#define PHY_PARAM_CTRL1_TX_FULL_SWING_MASK GENMASK(26, 19) ++#define PHY_PARAM_CTRL1_TX_DEEMPH_6DB_MASK GENMASK(19, 13) ++#define PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB_MASK GENMASK(13, 7) ++#define PHY_PARAM_CTRL1_LOS_BIAS_MASK GENMASK(7, 2) ++ ++#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 GENMASK(10, 7) ++#define RX_OVRD_IN_HI_RX_EQ(x) ((x) << 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 GENMASK(4, 2) ++#define RX_OVRD_IN_HI_RX_RATE_OVRD BIT(2) ++#define RX_OVRD_IN_HI_RX_RATE_MASK GENMASK(2, 0) ++ ++/* TX OVRD DRV LO register bits */ ++#define TX_OVRD_DRV_LO_AMPLITUDE_MASK GENMASK(6, 0) ++#define TX_OVRD_DRV_LO_PREEMPH_MASK GENMASK(13, 6) ++#define TX_OVRD_DRV_LO_PREEMPH(x) ((x) << 7) ++#define TX_OVRD_DRV_LO_EN BIT(14) ++ ++/* MPLL bits */ ++#define SSPHY_MPLL_MASK GENMASK(8, 5) ++#define SSPHY_MPLL(x) ((x) << 5) ++ ++/* 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 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 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 usb_phy_write_readback(struct 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 usb_ss_write_phycreg(struct 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 usb_ss_read_phycreg(struct 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; ++ ++ /* ++ * 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, phy_dwc3->base + CR_PROTOCOL_READ_REG); ++ ++ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_READ_REG); ++ if (ret) ++ goto err_wait; ++ ++ /* throwaway read */ ++ readl(phy_dwc3->base + CR_PROTOCOL_DATA_OUT_REG); ++ ++ writel(SS_CR_READ_REG, phy_dwc3->base + CR_PROTOCOL_READ_REG); ++ ++ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_READ_REG); ++ if (ret) ++ goto err_wait; ++ ++ *val = readl(phy_dwc3->base + CR_PROTOCOL_DATA_OUT_REG); ++ ++err_wait: ++ return ret; ++} ++ ++static int qcom_ipq806x_usb_hs_phy_init(struct phy *phy) ++{ ++ struct 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_ipq806x_usb_hs_phy_exit(struct phy *phy) ++{ ++ struct 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_ipq806x_usb_ss_phy_init(struct phy *phy) ++{ ++ struct usb_phy *phy_dwc3 = phy_get_drvdata(phy); ++ int ret; ++ u32 data; ++ ++ 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 = usb_ss_read_phycreg(phy_dwc3, 0x102D, &data); ++ if (ret) ++ goto err_phy_trans; ++ ++ data |= (1 << 7); ++ ret = usb_ss_write_phycreg(phy_dwc3, 0x102D, data); ++ if (ret) ++ goto err_phy_trans; ++ ++ ret = usb_ss_read_phycreg(phy_dwc3, 0x1010, &data); ++ if (ret) ++ goto err_phy_trans; ++ ++ data &= ~0xff0; ++ data |= 0x20; ++ ret = usb_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 = usb_ss_read_phycreg(phy_dwc3, 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 |= RX_OVRD_IN_HI_RX_EQ(phy_dwc3->rx_eq); ++ data |= RX_OVRD_IN_HI_RX_EQ_OVRD; ++ ret = usb_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 = usb_ss_read_phycreg(phy_dwc3, ++ SSPHY_CTRL_TX_OVRD_DRV_LO(0), &data); ++ if (ret) ++ goto err_phy_trans; ++ ++ data &= ~TX_OVRD_DRV_LO_PREEMPH_MASK; ++ data |= TX_OVRD_DRV_LO_PREEMPH(phy_dwc3->tx_deamp_3_5db); ++ data &= ~TX_OVRD_DRV_LO_AMPLITUDE_MASK; ++ data |= 0x6E; ++ data |= TX_OVRD_DRV_LO_EN; ++ ret = usb_ss_write_phycreg(phy_dwc3, ++ SSPHY_CTRL_TX_OVRD_DRV_LO(0), data); ++ if (ret) ++ goto err_phy_trans; ++ ++ data = 0; ++ data &= ~SSPHY_MPLL_MASK; ++ data |= SSPHY_MPLL(phy_dwc3->mpll); ++ usb_ss_write_phycreg(phy_dwc3, 0x30, data); ++ ++ /* ++ * 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); ++ ++ usb_phy_write_readback(phy_dwc3, SSUSB_PHY_PARAM_CTRL_1, ++ PHY_PARAM_CTRL1_MASK, data); ++ ++err_phy_trans: ++ return ret; ++} ++ ++static int qcom_ipq806x_usb_ss_phy_exit(struct phy *phy) ++{ ++ struct 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 ++ */ ++ usb_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG, ++ SSUSB_CTRL_SS_PHY_EN, 0x0); ++ usb_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG, ++ SSUSB_CTRL_REF_USE_PAD, 0x0); ++ usb_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 phy_drvdata qcom_ipq806x_usb_hs_drvdata = { ++ .ops = { ++ .init = qcom_ipq806x_usb_hs_phy_init, ++ .exit = qcom_ipq806x_usb_hs_phy_exit, ++ .owner = THIS_MODULE, ++ }, ++ .clk_rate = 60000000, ++}; ++ ++static const struct phy_drvdata qcom_ipq806x_usb_ss_drvdata = { ++ .ops = { ++ .init = qcom_ipq806x_usb_ss_phy_init, ++ .exit = qcom_ipq806x_usb_ss_phy_exit, ++ .owner = THIS_MODULE, ++ }, ++ .clk_rate = 125000000, ++}; ++ ++static const struct of_device_id qcom_ipq806x_usb_phy_table[] = { ++ { .compatible = "qcom,ipq806x-usb-phy-hs", ++ .data = &qcom_ipq806x_usb_hs_drvdata }, ++ { .compatible = "qcom,ipq806x-usb-phy-ss", ++ .data = &qcom_ipq806x_usb_ss_drvdata }, ++ { /* Sentinel */ } ++}; ++MODULE_DEVICE_TABLE(of, qcom_ipq806x_usb_phy_table); ++ ++static int qcom_ipq806x_usb_phy_probe(struct platform_device *pdev) ++{ ++ struct resource *res; ++ resource_size_t size; ++ struct phy *generic_phy; ++ struct usb_phy *phy_dwc3; ++ const struct phy_drvdata *data; ++ struct phy_provider *phy_provider; ++ ++ phy_dwc3 = devm_kzalloc(&pdev->dev, sizeof(*phy_dwc3), GFP_KERNEL); ++ if (!phy_dwc3) ++ return -ENOMEM; ++ ++ data = of_device_get_match_data(&pdev->dev); ++ ++ phy_dwc3->dev = &pdev->dev; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ if (!res) ++ return -EINVAL; ++ size = resource_size(res); ++ phy_dwc3->base = devm_ioremap(phy_dwc3->dev, res->start, size); ++ ++ if (IS_ERR(phy_dwc3->base)) { ++ dev_err(phy_dwc3->dev, "failed to map reg\n"); ++ 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 */ ++ if (device_property_read_u32(&pdev->dev, "qcom,rx-eq", ++ &phy_dwc3->rx_eq)) ++ phy_dwc3->rx_eq = SSPHY_RX_EQ_VALUE; ++ ++ if (device_property_read_u32(&pdev->dev, "qcom,tx-deamp_3_5db", ++ &phy_dwc3->tx_deamp_3_5db)) ++ phy_dwc3->rx_eq = SSPHY_TX_DEEMPH_3_5DB; ++ ++ if (device_property_read_u32(&pdev->dev, "qcom,mpll", &phy_dwc3->mpll)) ++ 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_ipq806x_usb_phy_driver = { ++ .probe = qcom_ipq806x_usb_phy_probe, ++ .driver = { ++ .name = "qcom-ipq806x-usb-phy", ++ .owner = THIS_MODULE, ++ .of_match_table = qcom_ipq806x_usb_phy_table, ++ }, ++}; ++ ++module_platform_driver(qcom_ipq806x_usb_phy_driver); ++ ++MODULE_ALIAS("platform:phy-qcom-ipq806x-usb"); ++MODULE_LICENSE("GPL v2"); ++MODULE_AUTHOR("Andy Gross "); ++MODULE_AUTHOR("Ivan T. Ivanov "); ++MODULE_DESCRIPTION("DesignWare USB3 QCOM PHY driver"); diff --git a/target/linux/ipq806x/patches-5.4/095-2-v5.9-phy-qualcomm-fix-setting-of-tx_deamp_3_5db-when-device-property-read-fails.patch b/target/linux/ipq806x/patches-5.4/095-2-v5.9-phy-qualcomm-fix-setting-of-tx_deamp_3_5db-when-device-property-read-fails.patch new file mode 100644 index 0000000000..dedbb51049 --- /dev/null +++ b/target/linux/ipq806x/patches-5.4/095-2-v5.9-phy-qualcomm-fix-setting-of-tx_deamp_3_5db-when-device-property-read-fails.patch @@ -0,0 +1,31 @@ +From 3d7b0ca5300bd01b176f2b4c10e173db802560d8 Mon Sep 17 00:00:00 2001 +From: Colin Ian King +Date: Tue, 21 Jul 2020 16:06:13 +0100 +Subject: phy: qualcomm: fix setting of tx_deamp_3_5db when device property + read fails + +Currently when reading of the device property for "qcom,tx-deamp_3_5db" +fails the default is being assigned incorrectly to phy_dwc3->rx_eq. This +looks like a copy-n-paste error and in fact should be assigning the +default instead to phy_dwc3->tx_deamp_3_5db + +Addresses-Coverity: ("Copy-paste error") +Fixes: ef19b117b834 ("phy: qualcomm: add qcom ipq806x dwc usb phy driver") +Signed-off-by: Colin Ian King +Link: https://lore.kernel.org/r/20200721150613.416876-1-colin.king@canonical.com +Signed-off-by: Vinod Koul +--- + drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c ++++ b/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c +@@ -531,7 +531,7 @@ static int qcom_ipq806x_usb_phy_probe(st + + if (device_property_read_u32(&pdev->dev, "qcom,tx-deamp_3_5db", + &phy_dwc3->tx_deamp_3_5db)) +- phy_dwc3->rx_eq = SSPHY_TX_DEEMPH_3_5DB; ++ phy_dwc3->tx_deamp_3_5db = SSPHY_TX_DEEMPH_3_5DB; + + if (device_property_read_u32(&pdev->dev, "qcom,mpll", &phy_dwc3->mpll)) + phy_dwc3->mpll = SSPHY_MPLL_VALUE;