* [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver
@ 2020-06-15 20:53 Ansuel Smith
2020-06-15 20:53 ` [RESEND PATCH v7 2/2] devicetree: bindings: phy: Document ipq806x dwc3 qcom phy Ansuel Smith
2020-07-13 5:32 ` [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver Vinod Koul
0 siblings, 2 replies; 6+ messages in thread
From: Ansuel Smith @ 2020-06-15 20:53 UTC (permalink / raw)
To: Vinod Koul
Cc: Ansuel Smith, Andy Gross, Jonathan McDowell, Andy Gross,
Bjorn Andersson, Kishon Vijay Abraham I, Rob Herring,
Mark Rutland, linux-arm-msm, linux-kernel, devicetree
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 <agross@codeaurora.org>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Tested-by: Jonathan McDowell <noodles@earth.li>
---
v7:
* Add TestedBy tag
v6:
* Use GENMASK instead of hex value
v4:
* Add qcom to specific bindings
v3:
* Use reg instead of regmap phandle
v2:
* Renamed config from PHY_QCOM_DWC3 to PHY_QCOM_IPQ806X_USB
* Rename inline function to generic name to reduce length
* Fix check reported by checkpatch --strict
* Rename compatible to qcom,ipq806x-usb-phy-(hs/ss)
drivers/phy/qualcomm/Kconfig | 12 +
drivers/phy/qualcomm/Makefile | 1 +
drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c | 593 ++++++++++++++++++++
3 files changed, 606 insertions(+)
create mode 100644 drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig
index e46824da29f6..9d41c3d12800 100644
--- 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_IPQ806X_USB
+ tristate "Qualcomm IPQ806x DWC3 USB PHY driver"
+ 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 on ipq806x SoC. This driver supports
+ both HS and SS PHY controllers.
+
diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile
index 283251d6a5d9..8629299c1495 100644
--- a/drivers/phy/qualcomm/Makefile
+++ b/drivers/phy/qualcomm/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_PHY_QCOM_UFS_14NM) += phy-qcom-ufs-qmp-14nm.o
obj-$(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
diff --git a/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c b/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
new file mode 100644
index 000000000000..f37cd8760118
--- /dev/null
+++ b/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
@@ -0,0 +1,593 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* 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 (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 = 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 = 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 usb_phy *phy_dwc3;
+ struct phy_provider *phy_provider;
+ struct phy *generic_phy;
+ const struct of_device_id *match;
+ const struct phy_drvdata *data;
+ struct resource *res;
+ resource_size_t size;
+ 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_ipq806x_usb_phy_table, pdev->dev.of_node);
+ data = match->data;
+
+ 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 */
+ np = of_node_get(pdev->dev.of_node);
+ if (!of_compat_cmp(match->compatible, "qcom,ipq806x-usb-phy-ss",
+ strlen(match->compatible))) {
+ if (of_property_read_u32(np, "qcom,rx-eq", &phy_dwc3->rx_eq) ||
+ of_property_read_u32(np, "qcom,tx-deamp_3_5db",
+ &phy_dwc3->tx_deamp_3_5db) ||
+ of_property_read_u32(np, "qcom,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_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 <agross@codeaurora.org>");
+MODULE_AUTHOR("Ivan T. Ivanov <iivanov@mm-sol.com>");
+MODULE_DESCRIPTION("DesignWare USB3 QCOM PHY driver");
--
2.25.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [RESEND PATCH v7 2/2] devicetree: bindings: phy: Document ipq806x dwc3 qcom phy
2020-06-15 20:53 [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver Ansuel Smith
@ 2020-06-15 20:53 ` Ansuel Smith
2020-07-08 11:21 ` Vinod Koul
2020-07-09 20:25 ` Rob Herring
2020-07-13 5:32 ` [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver Vinod Koul
1 sibling, 2 replies; 6+ messages in thread
From: Ansuel Smith @ 2020-06-15 20:53 UTC (permalink / raw)
To: Vinod Koul
Cc: Ansuel Smith, Andy Gross, Bjorn Andersson,
Kishon Vijay Abraham I, Rob Herring, Mark Rutland, linux-arm-msm,
linux-kernel, devicetree
Document dwc3 qcom phy hs and ss phy bindings needed to correctly
inizialize and use usb on ipq806x SoC.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
v7:
* Drop useless AllOf
v6:
* Add maximum value
v5:
* Fix dt_binding_check error
v4:
* Add qcom to specific bindings
v3:
* Use explicit reg instead of regmap
.../bindings/phy/qcom,ipq806x-usb-phy-hs.yaml | 55 ++++++++++++++
.../bindings/phy/qcom,ipq806x-usb-phy-ss.yaml | 73 +++++++++++++++++++
2 files changed, 128 insertions(+)
create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml
create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-ss.yaml
diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml
new file mode 100644
index 000000000000..23887ebe08fd
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/qcom,ipq806x-usb-phy-hs.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm ipq806x usb DWC3 HS PHY CONTROLLER
+
+maintainers:
+ - Ansuel Smith <ansuelsmth@gmail.com>
+
+description:
+ DWC3 PHY nodes are defined to describe on-chip Synopsis Physical layer
+ controllers used in ipq806x. Each DWC3 PHY controller should have its
+ own node.
+
+properties:
+ compatible:
+ const: qcom,ipq806x-usb-phy-hs
+
+ "#phy-cells":
+ const: 0
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+
+ clock-names:
+ minItems: 1
+ maxItems: 2
+ items:
+ - const: ref
+ - const: xo
+
+required:
+ - compatible
+ - "#phy-cells"
+ - reg
+ - clocks
+ - clock-names
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
+
+ hs_phy_0: phy@110f8800 {
+ compatible = "qcom,ipq806x-usb-phy-hs";
+ reg = <0x110f8800 0x30>;
+ clocks = <&gcc USB30_0_UTMI_CLK>;
+ clock-names = "ref";
+ #phy-cells = <0>;
+ };
diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-ss.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-ss.yaml
new file mode 100644
index 000000000000..fa30c24b4405
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-ss.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/qcom,ipq806x-usb-phy-ss.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm ipq806x usb DWC3 SS PHY CONTROLLER
+
+maintainers:
+ - Ansuel Smith <ansuelsmth@gmail.com>
+
+description:
+ DWC3 PHY nodes are defined to describe on-chip Synopsis Physical layer
+ controllers used in ipq806x. Each DWC3 PHY controller should have its
+ own node.
+
+properties:
+ compatible:
+ const: qcom,ipq806x-usb-phy-ss
+
+ "#phy-cells":
+ const: 0
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+
+ clock-names:
+ minItems: 1
+ maxItems: 2
+ items:
+ - const: ref
+ - const: xo
+
+ qcom,rx-eq:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Override value for rx_eq.
+ default: 4
+ maximum: 7
+
+ qcom,tx-deamp-3_5db:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Override value for transmit preemphasis.
+ default: 23
+ maximum: 63
+
+ qcom,mpll:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Override value for mpll.
+ default: 0
+ maximum: 7
+
+required:
+ - compatible
+ - "#phy-cells"
+ - reg
+ - clocks
+ - clock-names
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
+
+ ss_phy_0: phy@110f8830 {
+ compatible = "qcom,ipq806x-usb-phy-ss";
+ reg = <0x110f8830 0x30>;
+ clocks = <&gcc USB30_0_MASTER_CLK>;
+ clock-names = "ref";
+ #phy-cells = <0>;
+ };
--
2.25.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [RESEND PATCH v7 2/2] devicetree: bindings: phy: Document ipq806x dwc3 qcom phy
2020-06-15 20:53 ` [RESEND PATCH v7 2/2] devicetree: bindings: phy: Document ipq806x dwc3 qcom phy Ansuel Smith
@ 2020-07-08 11:21 ` Vinod Koul
2020-07-09 20:25 ` Rob Herring
1 sibling, 0 replies; 6+ messages in thread
From: Vinod Koul @ 2020-07-08 11:21 UTC (permalink / raw)
To: Ansuel Smith, Rob Herring
Cc: Andy Gross, Bjorn Andersson, Kishon Vijay Abraham I,
Mark Rutland, linux-arm-msm, linux-kernel, devicetree
On 15-06-20, 22:53, Ansuel Smith wrote:
> Document dwc3 qcom phy hs and ss phy bindings needed to correctly
> inizialize and use usb on ipq806x SoC.
Rob ?
>
> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> ---
> v7:
> * Drop useless AllOf
> v6:
> * Add maximum value
> v5:
> * Fix dt_binding_check error
> v4:
> * Add qcom to specific bindings
> v3:
> * Use explicit reg instead of regmap
>
> .../bindings/phy/qcom,ipq806x-usb-phy-hs.yaml | 55 ++++++++++++++
> .../bindings/phy/qcom,ipq806x-usb-phy-ss.yaml | 73 +++++++++++++++++++
> 2 files changed, 128 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml
> create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-ss.yaml
>
> diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml
> new file mode 100644
> index 000000000000..23887ebe08fd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml
> @@ -0,0 +1,55 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/qcom,ipq806x-usb-phy-hs.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm ipq806x usb DWC3 HS PHY CONTROLLER
> +
> +maintainers:
> + - Ansuel Smith <ansuelsmth@gmail.com>
> +
> +description:
> + DWC3 PHY nodes are defined to describe on-chip Synopsis Physical layer
> + controllers used in ipq806x. Each DWC3 PHY controller should have its
> + own node.
> +
> +properties:
> + compatible:
> + const: qcom,ipq806x-usb-phy-hs
> +
> + "#phy-cells":
> + const: 0
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + minItems: 1
> + maxItems: 2
> +
> + clock-names:
> + minItems: 1
> + maxItems: 2
> + items:
> + - const: ref
> + - const: xo
> +
> +required:
> + - compatible
> + - "#phy-cells"
> + - reg
> + - clocks
> + - clock-names
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
> +
> + hs_phy_0: phy@110f8800 {
> + compatible = "qcom,ipq806x-usb-phy-hs";
> + reg = <0x110f8800 0x30>;
> + clocks = <&gcc USB30_0_UTMI_CLK>;
> + clock-names = "ref";
> + #phy-cells = <0>;
> + };
> diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-ss.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-ss.yaml
> new file mode 100644
> index 000000000000..fa30c24b4405
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-ss.yaml
> @@ -0,0 +1,73 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/qcom,ipq806x-usb-phy-ss.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm ipq806x usb DWC3 SS PHY CONTROLLER
> +
> +maintainers:
> + - Ansuel Smith <ansuelsmth@gmail.com>
> +
> +description:
> + DWC3 PHY nodes are defined to describe on-chip Synopsis Physical layer
> + controllers used in ipq806x. Each DWC3 PHY controller should have its
> + own node.
> +
> +properties:
> + compatible:
> + const: qcom,ipq806x-usb-phy-ss
> +
> + "#phy-cells":
> + const: 0
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + minItems: 1
> + maxItems: 2
> +
> + clock-names:
> + minItems: 1
> + maxItems: 2
> + items:
> + - const: ref
> + - const: xo
> +
> + qcom,rx-eq:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Override value for rx_eq.
> + default: 4
> + maximum: 7
> +
> + qcom,tx-deamp-3_5db:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Override value for transmit preemphasis.
> + default: 23
> + maximum: 63
> +
> + qcom,mpll:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Override value for mpll.
> + default: 0
> + maximum: 7
> +
> +required:
> + - compatible
> + - "#phy-cells"
> + - reg
> + - clocks
> + - clock-names
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
> +
> + ss_phy_0: phy@110f8830 {
> + compatible = "qcom,ipq806x-usb-phy-ss";
> + reg = <0x110f8830 0x30>;
> + clocks = <&gcc USB30_0_MASTER_CLK>;
> + clock-names = "ref";
> + #phy-cells = <0>;
> + };
> --
> 2.25.1
--
~Vinod
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RESEND PATCH v7 2/2] devicetree: bindings: phy: Document ipq806x dwc3 qcom phy
2020-06-15 20:53 ` [RESEND PATCH v7 2/2] devicetree: bindings: phy: Document ipq806x dwc3 qcom phy Ansuel Smith
2020-07-08 11:21 ` Vinod Koul
@ 2020-07-09 20:25 ` Rob Herring
1 sibling, 0 replies; 6+ messages in thread
From: Rob Herring @ 2020-07-09 20:25 UTC (permalink / raw)
To: Ansuel Smith
Cc: Mark Rutland, linux-kernel, Andy Gross, Rob Herring,
Bjorn Andersson, linux-arm-msm, Vinod Koul, devicetree,
Kishon Vijay Abraham I
On Mon, 15 Jun 2020 22:53:27 +0200, Ansuel Smith wrote:
> Document dwc3 qcom phy hs and ss phy bindings needed to correctly
> inizialize and use usb on ipq806x SoC.
>
> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> ---
> v7:
> * Drop useless AllOf
> v6:
> * Add maximum value
> v5:
> * Fix dt_binding_check error
> v4:
> * Add qcom to specific bindings
> v3:
> * Use explicit reg instead of regmap
>
> .../bindings/phy/qcom,ipq806x-usb-phy-hs.yaml | 55 ++++++++++++++
> .../bindings/phy/qcom,ipq806x-usb-phy-ss.yaml | 73 +++++++++++++++++++
> 2 files changed, 128 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml
> create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-ss.yaml
>
Reviewed-by: Rob Herring <robh@kernel.org>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver
2020-06-15 20:53 [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver Ansuel Smith
2020-06-15 20:53 ` [RESEND PATCH v7 2/2] devicetree: bindings: phy: Document ipq806x dwc3 qcom phy Ansuel Smith
@ 2020-07-13 5:32 ` Vinod Koul
2020-07-13 13:11 ` R: " ansuelsmth
1 sibling, 1 reply; 6+ messages in thread
From: Vinod Koul @ 2020-07-13 5:32 UTC (permalink / raw)
To: Ansuel Smith
Cc: Andy Gross, Jonathan McDowell, Andy Gross, Bjorn Andersson,
Kishon Vijay Abraham I, Rob Herring, Mark Rutland, linux-arm-msm,
linux-kernel, devicetree
On 15-06-20, 22:53, Ansuel Smith wrote:
> @@ -0,0 +1,593 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/* 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.
You have SPDX tag, so we dont need the license text, please remove this.
Also we are in 2020 now so Copyright looks incorrect
> +static int qcom_ipq806x_usb_ss_phy_init(struct phy *phy)
> +{
> + struct usb_phy *phy_dwc3 = phy_get_drvdata(phy);
> + int ret;
> + u32 data = 0;
Superfluous init
> +static int qcom_ipq806x_usb_phy_probe(struct platform_device *pdev)
> +{
> + struct usb_phy *phy_dwc3;
> + struct phy_provider *phy_provider;
> + struct phy *generic_phy;
> + const struct of_device_id *match;
> + const struct phy_drvdata *data;
> + struct resource *res;
> + resource_size_t size;
Pls pick one, tabs or single spaces, not both. and reverse christmas
looks better :)
> + 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_ipq806x_usb_phy_table, pdev->dev.of_node);
> + data = match->data;
How about using of_device_get_match_data() instead?
--
~Vinod
^ permalink raw reply [flat|nested] 6+ messages in thread
* R: [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver
2020-07-13 5:32 ` [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver Vinod Koul
@ 2020-07-13 13:11 ` ansuelsmth
0 siblings, 0 replies; 6+ messages in thread
From: ansuelsmth @ 2020-07-13 13:11 UTC (permalink / raw)
To: 'Vinod Koul'
Cc: 'Andy Gross', 'Jonathan McDowell',
'Andy Gross', 'Bjorn Andersson',
'Kishon Vijay Abraham I', 'Rob Herring',
'Mark Rutland',
linux-arm-msm, linux-kernel, devicetree
> -----Messaggio originale-----
> Da: Vinod Koul <vkoul@kernel.org>
> Inviato: lunedì 13 luglio 2020 07:33
> A: Ansuel Smith <ansuelsmth@gmail.com>
> Cc: Andy Gross <agross@codeaurora.org>; Jonathan McDowell
> <noodles@earth.li>; Andy Gross <agross@kernel.org>; Bjorn Andersson
> <bjorn.andersson@linaro.org>; Kishon Vijay Abraham I <kishon@ti.com>;
> Rob Herring <robh+dt@kernel.org>; Mark Rutland
> <mark.rutland@arm.com>; linux-arm-msm@vger.kernel.org; linux-
> kernel@vger.kernel.org; devicetree@vger.kernel.org
> Oggetto: Re: [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x
> dwc usb phy driver
>
> On 15-06-20, 22:53, Ansuel Smith wrote:
>
> > @@ -0,0 +1,593 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/* 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.
>
> You have SPDX tag, so we dont need the license text, please remove this.
> Also we are in 2020 now so Copyright looks incorrect
>
> > +static int qcom_ipq806x_usb_ss_phy_init(struct phy *phy)
> > +{
> > + struct usb_phy *phy_dwc3 = phy_get_drvdata(phy);
> > + int ret;
> > + u32 data = 0;
>
> Superfluous init
>
> > +static int qcom_ipq806x_usb_phy_probe(struct platform_device *pdev)
> > +{
> > + struct usb_phy *phy_dwc3;
> > + struct phy_provider *phy_provider;
> > + struct phy *generic_phy;
> > + const struct of_device_id *match;
> > + const struct phy_drvdata *data;
> > + struct resource *res;
> > + resource_size_t size;
>
> Pls pick one, tabs or single spaces, not both. and reverse christmas
> looks better :)
>
> > + 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_ipq806x_usb_phy_table, pdev-
> >dev.of_node);
> > + data = match->data;
>
> How about using of_device_get_match_data() instead?
> --
> ~Vinod
match is also used in the function to compare compatible.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-07-13 13:11 UTC | newest]
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2020-06-15 20:53 [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver Ansuel Smith
2020-06-15 20:53 ` [RESEND PATCH v7 2/2] devicetree: bindings: phy: Document ipq806x dwc3 qcom phy Ansuel Smith
2020-07-08 11:21 ` Vinod Koul
2020-07-09 20:25 ` Rob Herring
2020-07-13 5:32 ` [RESEND PATCH v7 1/2] phy: qualcomm: add qcom ipq806x dwc usb phy driver Vinod Koul
2020-07-13 13:11 ` R: " ansuelsmth
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