phy: phy-mt65xx-usb3: add mediatek directory and rename file

The driver is actually for T-PHY which supports USB3.0, PCIe and SATA,
and supports more SoCs now, but not just only for series of mt65xx SoCs,
so the name of file, data struct, functions etc with 'mt65xx' may cause
misunderstanding when new SoCs are supported. Here rename them to reflect
the real functions and also enhance readability.

And also update MAINTAINERS file to reflect the correct driver

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

3 files changed, 1100 insertions, 0 deletions

diff --git a/drivers/phy/mediatek/Kconfig b/drivers/phy/mediatek/Kconfig
new file mode 100644
index 000000000000..88ab4e25e34f
--- /dev/null
+++ b/drivers/phy/mediatek/Kconfig
@@ -0,0 +1,14 @@
+#
+# Phy drivers for Mediatek devices
+#
+config PHY_MTK_TPHY
+    tristate "MediaTek T-PHY Driver"
+    depends on ARCH_MEDIATEK && OF
+    select GENERIC_PHY
+    help
+      Say 'Y' here to add support for MediaTek T-PHY driver,
+      it supports multiple usb2.0, usb3.0 ports, PCIe and
+	  SATA, and meanwhile supports two version T-PHY which have
+	  different banks layout, the T-PHY with shared banks between
+	  multi-ports is first version, otherwise is second veriosn,
+	  so you can easily distinguish them by banks layout.
diff --git a/drivers/phy/mediatek/Makefile b/drivers/phy/mediatek/Makefile
new file mode 100644
index 000000000000..763a92eefa00
--- /dev/null
+++ b/drivers/phy/mediatek/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the phy drivers.
+#
+
+obj-$(CONFIG_PHY_MTK_TPHY)		+= phy-mtk-tphy.o
diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
new file mode 100644
index 000000000000..e3baad78521f
--- /dev/null
+++ b/drivers/phy/mediatek/phy-mtk-tphy.c
@@ -0,0 +1,1081 @@
+/*
+ * Copyright (c) 2015 MediaTek Inc.
+ * Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 <dt-bindings/phy/phy.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+
+/* version V1 sub-banks offset base address */
+/* banks shared by multiple phys */
+#define SSUSB_SIFSLV_V1_SPLLC		0x000	/* shared by u3 phys */
+#define SSUSB_SIFSLV_V1_U2FREQ		0x100	/* shared by u2 phys */
+/* u2 phy bank */
+#define SSUSB_SIFSLV_V1_U2PHY_COM	0x000
+/* u3/pcie/sata phy banks */
+#define SSUSB_SIFSLV_V1_U3PHYD		0x000
+#define SSUSB_SIFSLV_V1_U3PHYA		0x200
+
+/* version V2 sub-banks offset base address */
+/* u2 phy banks */
+#define SSUSB_SIFSLV_V2_MISC		0x000
+#define SSUSB_SIFSLV_V2_U2FREQ		0x100
+#define SSUSB_SIFSLV_V2_U2PHY_COM	0x300
+/* u3/pcie/sata phy banks */
+#define SSUSB_SIFSLV_V2_SPLLC		0x000
+#define SSUSB_SIFSLV_V2_CHIP		0x100
+#define SSUSB_SIFSLV_V2_U3PHYD		0x200
+#define SSUSB_SIFSLV_V2_U3PHYA		0x400
+
+#define U3P_USBPHYACR0		0x000
+#define PA0_RG_U2PLL_FORCE_ON		BIT(15)
+#define PA0_RG_USB20_INTR_EN		BIT(5)
+
+#define U3P_USBPHYACR2		0x008
+#define PA2_RG_SIF_U2PLL_FORCE_EN	BIT(18)
+
+#define U3P_USBPHYACR5		0x014
+#define PA5_RG_U2_HSTX_SRCAL_EN	BIT(15)
+#define PA5_RG_U2_HSTX_SRCTRL		GENMASK(14, 12)
+#define PA5_RG_U2_HSTX_SRCTRL_VAL(x)	((0x7 & (x)) << 12)
+#define PA5_RG_U2_HS_100U_U3_EN	BIT(11)
+
+#define U3P_USBPHYACR6		0x018
+#define PA6_RG_U2_BC11_SW_EN		BIT(23)
+#define PA6_RG_U2_OTG_VBUSCMP_EN	BIT(20)
+#define PA6_RG_U2_SQTH		GENMASK(3, 0)
+#define PA6_RG_U2_SQTH_VAL(x)	(0xf & (x))
+
+#define U3P_U2PHYACR4		0x020
+#define P2C_RG_USB20_GPIO_CTL		BIT(9)
+#define P2C_USB20_GPIO_MODE		BIT(8)
+#define P2C_U2_GPIO_CTR_MSK	(P2C_RG_USB20_GPIO_CTL | P2C_USB20_GPIO_MODE)
+
+#define U3D_U2PHYDCR0		0x060
+#define P2C_RG_SIF_U2PLL_FORCE_ON	BIT(24)
+
+#define U3P_U2PHYDTM0		0x068
+#define P2C_FORCE_UART_EN		BIT(26)
+#define P2C_FORCE_DATAIN		BIT(23)
+#define P2C_FORCE_DM_PULLDOWN		BIT(21)
+#define P2C_FORCE_DP_PULLDOWN		BIT(20)
+#define P2C_FORCE_XCVRSEL		BIT(19)
+#define P2C_FORCE_SUSPENDM		BIT(18)
+#define P2C_FORCE_TERMSEL		BIT(17)
+#define P2C_RG_DATAIN			GENMASK(13, 10)
+#define P2C_RG_DATAIN_VAL(x)		((0xf & (x)) << 10)
+#define P2C_RG_DMPULLDOWN		BIT(7)
+#define P2C_RG_DPPULLDOWN		BIT(6)
+#define P2C_RG_XCVRSEL			GENMASK(5, 4)
+#define P2C_RG_XCVRSEL_VAL(x)		((0x3 & (x)) << 4)
+#define P2C_RG_SUSPENDM			BIT(3)
+#define P2C_RG_TERMSEL			BIT(2)
+#define P2C_DTM0_PART_MASK \
+		(P2C_FORCE_DATAIN | P2C_FORCE_DM_PULLDOWN | \
+		P2C_FORCE_DP_PULLDOWN | P2C_FORCE_XCVRSEL | \
+		P2C_FORCE_TERMSEL | P2C_RG_DMPULLDOWN | \
+		P2C_RG_DPPULLDOWN | P2C_RG_TERMSEL)
+
+#define U3P_U2PHYDTM1		0x06C
+#define P2C_RG_UART_EN			BIT(16)
+#define P2C_RG_VBUSVALID		BIT(5)
+#define P2C_RG_SESSEND			BIT(4)
+#define P2C_RG_AVALID			BIT(2)
+
+#define U3P_U3_CHIP_GPIO_CTLD		0x0c
+#define P3C_REG_IP_SW_RST		BIT(31)
+#define P3C_MCU_BUS_CK_GATE_EN		BIT(30)
+#define P3C_FORCE_IP_SW_RST		BIT(29)
+
+#define U3P_U3_CHIP_GPIO_CTLE		0x10
+#define P3C_RG_SWRST_U3_PHYD		BIT(25)
+#define P3C_RG_SWRST_U3_PHYD_FORCE_EN	BIT(24)
+
+#define U3P_U3_PHYA_REG0	0x000
+#define P3A_RG_CLKDRV_OFF		GENMASK(3, 2)
+#define P3A_RG_CLKDRV_OFF_VAL(x)	((0x3 & (x)) << 2)
+
+#define U3P_U3_PHYA_REG1	0x004
+#define P3A_RG_CLKDRV_AMP		GENMASK(31, 29)
+#define P3A_RG_CLKDRV_AMP_VAL(x)	((0x7 & (x)) << 29)
+
+#define U3P_U3_PHYA_REG6	0x018
+#define P3A_RG_TX_EIDLE_CM		GENMASK(31, 28)
+#define P3A_RG_TX_EIDLE_CM_VAL(x)	((0xf & (x)) << 28)
+
+#define U3P_U3_PHYA_REG9	0x024
+#define P3A_RG_RX_DAC_MUX		GENMASK(5, 1)
+#define P3A_RG_RX_DAC_MUX_VAL(x)	((0x1f & (x)) << 1)
+
+#define U3P_U3_PHYA_DA_REG0	0x100
+#define P3A_RG_XTAL_EXT_PE2H		GENMASK(17, 16)
+#define P3A_RG_XTAL_EXT_PE2H_VAL(x)	((0x3 & (x)) << 16)
+#define P3A_RG_XTAL_EXT_PE1H		GENMASK(13, 12)
+#define P3A_RG_XTAL_EXT_PE1H_VAL(x)	((0x3 & (x)) << 12)
+#define P3A_RG_XTAL_EXT_EN_U3		GENMASK(11, 10)
+#define P3A_RG_XTAL_EXT_EN_U3_VAL(x)	((0x3 & (x)) << 10)
+
+#define U3P_U3_PHYA_DA_REG4	0x108
+#define P3A_RG_PLL_DIVEN_PE2H		GENMASK(21, 19)
+#define P3A_RG_PLL_BC_PE2H		GENMASK(7, 6)
+#define P3A_RG_PLL_BC_PE2H_VAL(x)	((0x3 & (x)) << 6)
+
+#define U3P_U3_PHYA_DA_REG5	0x10c
+#define P3A_RG_PLL_BR_PE2H		GENMASK(29, 28)
+#define P3A_RG_PLL_BR_PE2H_VAL(x)	((0x3 & (x)) << 28)
+#define P3A_RG_PLL_IC_PE2H		GENMASK(15, 12)
+#define P3A_RG_PLL_IC_PE2H_VAL(x)	((0xf & (x)) << 12)
+
+#define U3P_U3_PHYA_DA_REG6	0x110
+#define P3A_RG_PLL_IR_PE2H		GENMASK(19, 16)
+#define P3A_RG_PLL_IR_PE2H_VAL(x)	((0xf & (x)) << 16)
+
+#define U3P_U3_PHYA_DA_REG7	0x114
+#define P3A_RG_PLL_BP_PE2H		GENMASK(19, 16)
+#define P3A_RG_PLL_BP_PE2H_VAL(x)	((0xf & (x)) << 16)
+
+#define U3P_U3_PHYA_DA_REG20	0x13c
+#define P3A_RG_PLL_DELTA1_PE2H		GENMASK(31, 16)
+#define P3A_RG_PLL_DELTA1_PE2H_VAL(x)	((0xffff & (x)) << 16)
+
+#define U3P_U3_PHYA_DA_REG25	0x148
+#define P3A_RG_PLL_DELTA_PE2H		GENMASK(15, 0)
+#define P3A_RG_PLL_DELTA_PE2H_VAL(x)	(0xffff & (x))
+
+#define U3P_U3_PHYD_LFPS1		0x00c
+#define P3D_RG_FWAKE_TH		GENMASK(21, 16)
+#define P3D_RG_FWAKE_TH_VAL(x)	((0x3f & (x)) << 16)
+
+#define U3P_U3_PHYD_CDR1		0x05c
+#define P3D_RG_CDR_BIR_LTD1		GENMASK(28, 24)
+#define P3D_RG_CDR_BIR_LTD1_VAL(x)	((0x1f & (x)) << 24)
+#define P3D_RG_CDR_BIR_LTD0		GENMASK(12, 8)
+#define P3D_RG_CDR_BIR_LTD0_VAL(x)	((0x1f & (x)) << 8)
+
+#define U3P_U3_PHYD_RXDET1		0x128
+#define P3D_RG_RXDET_STB2_SET		GENMASK(17, 9)
+#define P3D_RG_RXDET_STB2_SET_VAL(x)	((0x1ff & (x)) << 9)
+
+#define U3P_U3_PHYD_RXDET2		0x12c
+#define P3D_RG_RXDET_STB2_SET_P3	GENMASK(8, 0)
+#define P3D_RG_RXDET_STB2_SET_P3_VAL(x)	(0x1ff & (x))
+
+#define U3P_SPLLC_XTALCTL3		0x018
+#define XC3_RG_U3_XTAL_RX_PWD		BIT(9)
+#define XC3_RG_U3_FRC_XTAL_RX_PWD	BIT(8)
+
+#define U3P_U2FREQ_FMCR0	0x00
+#define P2F_RG_MONCLK_SEL	GENMASK(27, 26)
+#define P2F_RG_MONCLK_SEL_VAL(x)	((0x3 & (x)) << 26)
+#define P2F_RG_FREQDET_EN	BIT(24)
+#define P2F_RG_CYCLECNT		GENMASK(23, 0)
+#define P2F_RG_CYCLECNT_VAL(x)	((P2F_RG_CYCLECNT) & (x))
+
+#define U3P_U2FREQ_VALUE	0x0c
+
+#define U3P_U2FREQ_FMMONR1	0x10
+#define P2F_USB_FM_VALID	BIT(0)
+#define P2F_RG_FRCK_EN		BIT(8)
+
+#define U3P_REF_CLK		26	/* MHZ */
+#define U3P_SLEW_RATE_COEF	28
+#define U3P_SR_COEF_DIVISOR	1000
+#define U3P_FM_DET_CYCLE_CNT	1024
+
+/* SATA register setting */
+#define PHYD_CTRL_SIGNAL_MODE4		0x1c
+/* CDR Charge Pump P-path current adjustment */
+#define RG_CDR_BICLTD1_GEN1_MSK		GENMASK(23, 20)
+#define RG_CDR_BICLTD1_GEN1_VAL(x)	((0xf & (x)) << 20)
+#define RG_CDR_BICLTD0_GEN1_MSK		GENMASK(11, 8)
+#define RG_CDR_BICLTD0_GEN1_VAL(x)	((0xf & (x)) << 8)
+
+#define PHYD_DESIGN_OPTION2		0x24
+/* Symbol lock count selection */
+#define RG_LOCK_CNT_SEL_MSK		GENMASK(5, 4)
+#define RG_LOCK_CNT_SEL_VAL(x)		((0x3 & (x)) << 4)
+
+#define PHYD_DESIGN_OPTION9	0x40
+/* COMWAK GAP width window */
+#define RG_TG_MAX_MSK		GENMASK(20, 16)
+#define RG_TG_MAX_VAL(x)	((0x1f & (x)) << 16)
+/* COMINIT GAP width window */
+#define RG_T2_MAX_MSK		GENMASK(13, 8)
+#define RG_T2_MAX_VAL(x)	((0x3f & (x)) << 8)
+/* COMWAK GAP width window */
+#define RG_TG_MIN_MSK		GENMASK(7, 5)
+#define RG_TG_MIN_VAL(x)	((0x7 & (x)) << 5)
+/* COMINIT GAP width window */
+#define RG_T2_MIN_MSK		GENMASK(4, 0)
+#define RG_T2_MIN_VAL(x)	(0x1f & (x))
+
+#define ANA_RG_CTRL_SIGNAL1		0x4c
+/* TX driver tail current control for 0dB de-empahsis mdoe for Gen1 speed */
+#define RG_IDRV_0DB_GEN1_MSK		GENMASK(13, 8)
+#define RG_IDRV_0DB_GEN1_VAL(x)		((0x3f & (x)) << 8)
+
+#define ANA_RG_CTRL_SIGNAL4		0x58
+#define RG_CDR_BICLTR_GEN1_MSK		GENMASK(23, 20)
+#define RG_CDR_BICLTR_GEN1_VAL(x)	((0xf & (x)) << 20)
+/* Loop filter R1 resistance adjustment for Gen1 speed */
+#define RG_CDR_BR_GEN2_MSK		GENMASK(10, 8)
+#define RG_CDR_BR_GEN2_VAL(x)		((0x7 & (x)) << 8)
+
+#define ANA_RG_CTRL_SIGNAL6		0x60
+/* I-path capacitance adjustment for Gen1 */
+#define RG_CDR_BC_GEN1_MSK		GENMASK(28, 24)
+#define RG_CDR_BC_GEN1_VAL(x)		((0x1f & (x)) << 24)
+#define RG_CDR_BIRLTR_GEN1_MSK		GENMASK(4, 0)
+#define RG_CDR_BIRLTR_GEN1_VAL(x)	(0x1f & (x))
+
+#define ANA_EQ_EYE_CTRL_SIGNAL1		0x6c
+/* RX Gen1 LEQ tuning step */
+#define RG_EQ_DLEQ_LFI_GEN1_MSK		GENMASK(11, 8)
+#define RG_EQ_DLEQ_LFI_GEN1_VAL(x)	((0xf & (x)) << 8)
+
+#define ANA_EQ_EYE_CTRL_SIGNAL4		0xd8
+#define RG_CDR_BIRLTD0_GEN1_MSK		GENMASK(20, 16)
+#define RG_CDR_BIRLTD0_GEN1_VAL(x)	((0x1f & (x)) << 16)
+
+#define ANA_EQ_EYE_CTRL_SIGNAL5		0xdc
+#define RG_CDR_BIRLTD0_GEN3_MSK		GENMASK(4, 0)
+#define RG_CDR_BIRLTD0_GEN3_VAL(x)	(0x1f & (x))
+
+enum mtk_phy_version {
+	MTK_PHY_V1 = 1,
+	MTK_PHY_V2,
+};
+
+struct mtk_phy_pdata {
+	/* avoid RX sensitivity level degradation only for mt8173 */
+	bool avoid_rx_sen_degradation;
+	enum mtk_phy_version version;
+};
+
+struct u2phy_banks {
+	void __iomem *misc;
+	void __iomem *fmreg;
+	void __iomem *com;
+};
+
+struct u3phy_banks {
+	void __iomem *spllc;
+	void __iomem *chip;
+	void __iomem *phyd; /* include u3phyd_bank2 */
+	void __iomem *phya; /* include u3phya_da */
+};
+
+struct mtk_phy_instance {
+	struct phy *phy;
+	void __iomem *port_base;
+	union {
+		struct u2phy_banks u2_banks;
+		struct u3phy_banks u3_banks;
+	};
+	struct clk *ref_clk;	/* reference clock of anolog phy */
+	u32 index;
+	u8 type;
+};
+
+struct mtk_tphy {
+	struct device *dev;
+	void __iomem *sif_base;	/* only shared sif */
+	/* deprecated, use @ref_clk instead in phy instance */
+	struct clk *u3phya_ref;	/* reference clock of usb3 anolog phy */
+	const struct mtk_phy_pdata *pdata;
+	struct mtk_phy_instance **phys;
+	int nphys;
+};
+
+static void hs_slew_rate_calibrate(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+{
+	struct u2phy_banks *u2_banks = &instance->u2_banks;
+	void __iomem *fmreg = u2_banks->fmreg;
+	void __iomem *com = u2_banks->com;
+	int calibration_val;
+	int fm_out;
+	u32 tmp;
+
+	/* enable USB ring oscillator */
+	tmp = readl(com + U3P_USBPHYACR5);
+	tmp |= PA5_RG_U2_HSTX_SRCAL_EN;
+	writel(tmp, com + U3P_USBPHYACR5);
+	udelay(1);
+
+	/*enable free run clock */
+	tmp = readl(fmreg + U3P_U2FREQ_FMMONR1);
+	tmp |= P2F_RG_FRCK_EN;
+	writel(tmp, fmreg + U3P_U2FREQ_FMMONR1);
+
+	/* set cycle count as 1024, and select u2 channel */
+	tmp = readl(fmreg + U3P_U2FREQ_FMCR0);
+	tmp &= ~(P2F_RG_CYCLECNT | P2F_RG_MONCLK_SEL);
+	tmp |= P2F_RG_CYCLECNT_VAL(U3P_FM_DET_CYCLE_CNT);
+	if (tphy->pdata->version == MTK_PHY_V1)
+		tmp |= P2F_RG_MONCLK_SEL_VAL(instance->index >> 1);
+
+	writel(tmp, fmreg + U3P_U2FREQ_FMCR0);
+
+	/* enable frequency meter */
+	tmp = readl(fmreg + U3P_U2FREQ_FMCR0);
+	tmp |= P2F_RG_FREQDET_EN;
+	writel(tmp, fmreg + U3P_U2FREQ_FMCR0);
+
+	/* ignore return value */
+	readl_poll_timeout(fmreg + U3P_U2FREQ_FMMONR1, tmp,
+			   (tmp & P2F_USB_FM_VALID), 10, 200);
+
+	fm_out = readl(fmreg + U3P_U2FREQ_VALUE);
+
+	/* disable frequency meter */
+	tmp = readl(fmreg + U3P_U2FREQ_FMCR0);
+	tmp &= ~P2F_RG_FREQDET_EN;
+	writel(tmp, fmreg + U3P_U2FREQ_FMCR0);
+
+	/*disable free run clock */
+	tmp = readl(fmreg + U3P_U2FREQ_FMMONR1);
+	tmp &= ~P2F_RG_FRCK_EN;
+	writel(tmp, fmreg + U3P_U2FREQ_FMMONR1);
+
+	if (fm_out) {
+		/* ( 1024 / FM_OUT ) x reference clock frequency x 0.028 */
+		tmp = U3P_FM_DET_CYCLE_CNT * U3P_REF_CLK * U3P_SLEW_RATE_COEF;
+		tmp /= fm_out;
+		calibration_val = DIV_ROUND_CLOSEST(tmp, U3P_SR_COEF_DIVISOR);
+	} else {
+		/* if FM detection fail, set default value */
+		calibration_val = 4;
+	}
+	dev_dbg(tphy->dev, "phy:%d, fm_out:%d, calib:%d\n",
+		instance->index, fm_out, calibration_val);
+
+	/* set HS slew rate */
+	tmp = readl(com + U3P_USBPHYACR5);
+	tmp &= ~PA5_RG_U2_HSTX_SRCTRL;
+	tmp |= PA5_RG_U2_HSTX_SRCTRL_VAL(calibration_val);
+	writel(tmp, com + U3P_USBPHYACR5);
+
+	/* disable USB ring oscillator */
+	tmp = readl(com + U3P_USBPHYACR5);
+	tmp &= ~PA5_RG_U2_HSTX_SRCAL_EN;
+	writel(tmp, com + U3P_USBPHYACR5);
+}
+
+static void u3_phy_instance_init(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+{
+	struct u3phy_banks *u3_banks = &instance->u3_banks;
+	u32 tmp;
+
+	/* gating PCIe Analog XTAL clock */
+	tmp = readl(u3_banks->spllc + U3P_SPLLC_XTALCTL3);
+	tmp |= XC3_RG_U3_XTAL_RX_PWD | XC3_RG_U3_FRC_XTAL_RX_PWD;
+	writel(tmp, u3_banks->spllc + U3P_SPLLC_XTALCTL3);
+
+	/* gating XSQ */
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG0);
+	tmp &= ~P3A_RG_XTAL_EXT_EN_U3;
+	tmp |= P3A_RG_XTAL_EXT_EN_U3_VAL(2);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_DA_REG0);
+
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_REG9);
+	tmp &= ~P3A_RG_RX_DAC_MUX;
+	tmp |= P3A_RG_RX_DAC_MUX_VAL(4);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_REG9);
+
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_REG6);
+	tmp &= ~P3A_RG_TX_EIDLE_CM;
+	tmp |= P3A_RG_TX_EIDLE_CM_VAL(0xe);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_REG6);
+
+	tmp = readl(u3_banks->phyd + U3P_U3_PHYD_CDR1);
+	tmp &= ~(P3D_RG_CDR_BIR_LTD0 | P3D_RG_CDR_BIR_LTD1);
+	tmp |= P3D_RG_CDR_BIR_LTD0_VAL(0xc) | P3D_RG_CDR_BIR_LTD1_VAL(0x3);
+	writel(tmp, u3_banks->phyd + U3P_U3_PHYD_CDR1);
+
+	tmp = readl(u3_banks->phyd + U3P_U3_PHYD_LFPS1);
+	tmp &= ~P3D_RG_FWAKE_TH;
+	tmp |= P3D_RG_FWAKE_TH_VAL(0x34);
+	writel(tmp, u3_banks->phyd + U3P_U3_PHYD_LFPS1);
+
+	tmp = readl(u3_banks->phyd + U3P_U3_PHYD_RXDET1);
+	tmp &= ~P3D_RG_RXDET_STB2_SET;
+	tmp |= P3D_RG_RXDET_STB2_SET_VAL(0x10);
+	writel(tmp, u3_banks->phyd + U3P_U3_PHYD_RXDET1);
+
+	tmp = readl(u3_banks->phyd + U3P_U3_PHYD_RXDET2);
+	tmp &= ~P3D_RG_RXDET_STB2_SET_P3;
+	tmp |= P3D_RG_RXDET_STB2_SET_P3_VAL(0x10);
+	writel(tmp, u3_banks->phyd + U3P_U3_PHYD_RXDET2);
+
+	dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index);
+}
+
+static void u2_phy_instance_init(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+{
+	struct u2phy_banks *u2_banks = &instance->u2_banks;
+	void __iomem *com = u2_banks->com;
+	u32 index = instance->index;
+	u32 tmp;
+
+	/* switch to USB function. (system register, force ip into usb mode) */
+	tmp = readl(com + U3P_U2PHYDTM0);
+	tmp &= ~P2C_FORCE_UART_EN;
+	tmp |= P2C_RG_XCVRSEL_VAL(1) | P2C_RG_DATAIN_VAL(0);
+	writel(tmp, com + U3P_U2PHYDTM0);
+
+	tmp = readl(com + U3P_U2PHYDTM1);
+	tmp &= ~P2C_RG_UART_EN;
+	writel(tmp, com + U3P_U2PHYDTM1);
+
+	tmp = readl(com + U3P_USBPHYACR0);
+	tmp |= PA0_RG_USB20_INTR_EN;
+	writel(tmp, com + U3P_USBPHYACR0);
+
+	/* disable switch 100uA current to SSUSB */
+	tmp = readl(com + U3P_USBPHYACR5);
+	tmp &= ~PA5_RG_U2_HS_100U_U3_EN;
+	writel(tmp, com + U3P_USBPHYACR5);
+
+	if (!index) {
+		tmp = readl(com + U3P_U2PHYACR4);
+		tmp &= ~P2C_U2_GPIO_CTR_MSK;
+		writel(tmp, com + U3P_U2PHYACR4);
+	}
+
+	if (tphy->pdata->avoid_rx_sen_degradation) {
+		if (!index) {
+			tmp = readl(com + U3P_USBPHYACR2);
+			tmp |= PA2_RG_SIF_U2PLL_FORCE_EN;
+			writel(tmp, com + U3P_USBPHYACR2);
+
+			tmp = readl(com + U3D_U2PHYDCR0);
+			tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON;
+			writel(tmp, com + U3D_U2PHYDCR0);
+		} else {
+			tmp = readl(com + U3D_U2PHYDCR0);
+			tmp |= P2C_RG_SIF_U2PLL_FORCE_ON;
+			writel(tmp, com + U3D_U2PHYDCR0);
+
+			tmp = readl(com + U3P_U2PHYDTM0);
+			tmp |= P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM;
+			writel(tmp, com + U3P_U2PHYDTM0);
+		}
+	}
+
+	tmp = readl(com + U3P_USBPHYACR6);
+	tmp &= ~PA6_RG_U2_BC11_SW_EN;	/* DP/DM BC1.1 path Disable */
+	tmp &= ~PA6_RG_U2_SQTH;
+	tmp |= PA6_RG_U2_SQTH_VAL(2);
+	writel(tmp, com + U3P_USBPHYACR6);
+
+	dev_dbg(tphy->dev, "%s(%d)\n", __func__, index);
+}
+
+static void u2_phy_instance_power_on(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+{
+	struct u2phy_banks *u2_banks = &instance->u2_banks;
+	void __iomem *com = u2_banks->com;
+	u32 index = instance->index;
+	u32 tmp;
+
+	/* (force_suspendm=0) (let suspendm=1, enable usb 480MHz pll) */
+	tmp = readl(com + U3P_U2PHYDTM0);
+	tmp &= ~(P2C_FORCE_SUSPENDM | P2C_RG_XCVRSEL);
+	tmp &= ~(P2C_RG_DATAIN | P2C_DTM0_PART_MASK);
+	writel(tmp, com + U3P_U2PHYDTM0);
+
+	/* OTG Enable */
+	tmp = readl(com + U3P_USBPHYACR6);
+	tmp |= PA6_RG_U2_OTG_VBUSCMP_EN;
+	writel(tmp, com + U3P_USBPHYACR6);
+
+	tmp = readl(com + U3P_U2PHYDTM1);
+	tmp |= P2C_RG_VBUSVALID | P2C_RG_AVALID;
+	tmp &= ~P2C_RG_SESSEND;
+	writel(tmp, com + U3P_U2PHYDTM1);
+
+	if (tphy->pdata->avoid_rx_sen_degradation && index) {
+		tmp = readl(com + U3D_U2PHYDCR0);
+		tmp |= P2C_RG_SIF_U2PLL_FORCE_ON;
+		writel(tmp, com + U3D_U2PHYDCR0);
+
+		tmp = readl(com + U3P_U2PHYDTM0);
+		tmp |= P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM;
+		writel(tmp, com + U3P_U2PHYDTM0);
+	}
+	dev_dbg(tphy->dev, "%s(%d)\n", __func__, index);
+}
+
+static void u2_phy_instance_power_off(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+{
+	struct u2phy_banks *u2_banks = &instance->u2_banks;
+	void __iomem *com = u2_banks->com;
+	u32 index = instance->index;
+	u32 tmp;
+
+	tmp = readl(com + U3P_U2PHYDTM0);
+	tmp &= ~(P2C_RG_XCVRSEL | P2C_RG_DATAIN);
+	tmp |= P2C_FORCE_SUSPENDM;
+	writel(tmp, com + U3P_U2PHYDTM0);
+
+	/* OTG Disable */
+	tmp = readl(com + U3P_USBPHYACR6);
+	tmp &= ~PA6_RG_U2_OTG_VBUSCMP_EN;
+	writel(tmp, com + U3P_USBPHYACR6);
+
+	/* let suspendm=0, set utmi into analog power down */
+	tmp = readl(com + U3P_U2PHYDTM0);
+	tmp &= ~P2C_RG_SUSPENDM;
+	writel(tmp, com + U3P_U2PHYDTM0);
+	udelay(1);
+
+	tmp = readl(com + U3P_U2PHYDTM1);
+	tmp &= ~(P2C_RG_VBUSVALID | P2C_RG_AVALID);
+	tmp |= P2C_RG_SESSEND;
+	writel(tmp, com + U3P_U2PHYDTM1);
+
+	if (tphy->pdata->avoid_rx_sen_degradation && index) {
+		tmp = readl(com + U3D_U2PHYDCR0);
+		tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON;
+		writel(tmp, com + U3D_U2PHYDCR0);
+	}
+
+	dev_dbg(tphy->dev, "%s(%d)\n", __func__, index);
+}
+
+static void u2_phy_instance_exit(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+{
+	struct u2phy_banks *u2_banks = &instance->u2_banks;
+	void __iomem *com = u2_banks->com;
+	u32 index = instance->index;
+	u32 tmp;
+
+	if (tphy->pdata->avoid_rx_sen_degradation && index) {
+		tmp = readl(com + U3D_U2PHYDCR0);
+		tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON;
+		writel(tmp, com + U3D_U2PHYDCR0);
+
+		tmp = readl(com + U3P_U2PHYDTM0);
+		tmp &= ~P2C_FORCE_SUSPENDM;
+		writel(tmp, com + U3P_U2PHYDTM0);
+	}
+}
+
+static void pcie_phy_instance_init(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+{
+	struct u3phy_banks *u3_banks = &instance->u3_banks;
+	u32 tmp;
+
+	if (tphy->pdata->version != MTK_PHY_V1)
+		return;
+
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG0);
+	tmp &= ~(P3A_RG_XTAL_EXT_PE1H | P3A_RG_XTAL_EXT_PE2H);
+	tmp |= P3A_RG_XTAL_EXT_PE1H_VAL(0x2) | P3A_RG_XTAL_EXT_PE2H_VAL(0x2);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_DA_REG0);
+
+	/* ref clk drive */
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_REG1);
+	tmp &= ~P3A_RG_CLKDRV_AMP;
+	tmp |= P3A_RG_CLKDRV_AMP_VAL(0x4);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_REG1);
+
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_REG0);
+	tmp &= ~P3A_RG_CLKDRV_OFF;
+	tmp |= P3A_RG_CLKDRV_OFF_VAL(0x1);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_REG0);
+
+	/* SSC delta -5000ppm */
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG20);
+	tmp &= ~P3A_RG_PLL_DELTA1_PE2H;
+	tmp |= P3A_RG_PLL_DELTA1_PE2H_VAL(0x3c);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_DA_REG20);
+
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG25);
+	tmp &= ~P3A_RG_PLL_DELTA_PE2H;
+	tmp |= P3A_RG_PLL_DELTA_PE2H_VAL(0x36);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_DA_REG25);
+
+	/* change pll BW 0.6M */
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG5);
+	tmp &= ~(P3A_RG_PLL_BR_PE2H | P3A_RG_PLL_IC_PE2H);
+	tmp |= P3A_RG_PLL_BR_PE2H_VAL(0x1) | P3A_RG_PLL_IC_PE2H_VAL(0x1);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_DA_REG5);
+
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG4);
+	tmp &= ~(P3A_RG_PLL_DIVEN_PE2H | P3A_RG_PLL_BC_PE2H);
+	tmp |= P3A_RG_PLL_BC_PE2H_VAL(0x3);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_DA_REG4);
+
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG6);
+	tmp &= ~P3A_RG_PLL_IR_PE2H;
+	tmp |= P3A_RG_PLL_IR_PE2H_VAL(0x2);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_DA_REG6);
+
+	tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG7);
+	tmp &= ~P3A_RG_PLL_BP_PE2H;
+	tmp |= P3A_RG_PLL_BP_PE2H_VAL(0xa);
+	writel(tmp, u3_banks->phya + U3P_U3_PHYA_DA_REG7);
+
+	/* Tx Detect Rx Timing: 10us -> 5us */
+	tmp = readl(u3_banks->phyd + U3P_U3_PHYD_RXDET1);
+	tmp &= ~P3D_RG_RXDET_STB2_SET;
+	tmp |= P3D_RG_RXDET_STB2_SET_VAL(0x10);
+	writel(tmp, u3_banks->phyd + U3P_U3_PHYD_RXDET1);
+
+	tmp = readl(u3_banks->phyd + U3P_U3_PHYD_RXDET2);
+	tmp &= ~P3D_RG_RXDET_STB2_SET_P3;
+	tmp |= P3D_RG_RXDET_STB2_SET_P3_VAL(0x10);
+	writel(tmp, u3_banks->phyd + U3P_U3_PHYD_RXDET2);
+
+	/* wait for PCIe subsys register to active */
+	usleep_range(2500, 3000);
+	dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index);
+}
+
+static void pcie_phy_instance_power_on(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+{
+	struct u3phy_banks *bank = &instance->u3_banks;
+	u32 tmp;
+
+	tmp = readl(bank->chip + U3P_U3_CHIP_GPIO_CTLD);
+	tmp &= ~(P3C_FORCE_IP_SW_RST | P3C_MCU_BUS_CK_GATE_EN |
+		P3C_REG_IP_SW_RST);
+	writel(tmp, bank->chip + U3P_U3_CHIP_GPIO_CTLD);
+
+	tmp = readl(bank->chip + U3P_U3_CHIP_GPIO_CTLE);
+	tmp &= ~(P3C_RG_SWRST_U3_PHYD_FORCE_EN | P3C_RG_SWRST_U3_PHYD);
+	writel(tmp, bank->chip + U3P_U3_CHIP_GPIO_CTLE);
+}
+
+static void pcie_phy_instance_power_off(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+
+{
+	struct u3phy_banks *bank = &instance->u3_banks;
+	u32 tmp;
+
+	tmp = readl(bank->chip + U3P_U3_CHIP_GPIO_CTLD);
+	tmp |= P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST;
+	writel(tmp, bank->chip + U3P_U3_CHIP_GPIO_CTLD);
+
+	tmp = readl(bank->chip + U3P_U3_CHIP_GPIO_CTLE);
+	tmp |= P3C_RG_SWRST_U3_PHYD_FORCE_EN | P3C_RG_SWRST_U3_PHYD;
+	writel(tmp, bank->chip + U3P_U3_CHIP_GPIO_CTLE);
+}
+
+static void sata_phy_instance_init(struct mtk_tphy *tphy,
+	struct mtk_phy_instance *instance)
+{
+	struct u3phy_banks *u3_banks = &instance->u3_banks;
+	void __iomem *phyd = u3_banks->phyd;
+	u32 tmp;
+
+	/* charge current adjustment */
+	tmp = readl(phyd + ANA_RG_CTRL_SIGNAL6);
+	tmp &= ~(RG_CDR_BIRLTR_GEN1_MSK | RG_CDR_BC_GEN1_MSK);
+	tmp |= RG_CDR_BIRLTR_GEN1_VAL(0x6) | RG_CDR_BC_GEN1_VAL(0x1a);
+	writel(tmp, phyd + ANA_RG_CTRL_SIGNAL6);
+
+	tmp = readl(phyd + ANA_EQ_EYE_CTRL_SIGNAL4);
+	tmp &= ~RG_CDR_BIRLTD0_GEN1_MSK;
+	tmp |= RG_CDR_BIRLTD0_GEN1_VAL(0x18);
+	writel(tmp, phyd + ANA_EQ_EYE_CTRL_SIGNAL4);
+
+	tmp = readl(phyd + ANA_EQ_EYE_CTRL_SIGNAL5);
+	tmp &= ~RG_CDR_BIRLTD0_GEN3_MSK;
+	tmp |= RG_CDR_BIRLTD0_GEN3_VAL(0x06);
+	writel(tmp, phyd + ANA_EQ_EYE_CTRL_SIGNAL5);
+
+	tmp = readl(phyd + ANA_RG_CTRL_SIGNAL4);
+	tmp &= ~(RG_CDR_BICLTR_GEN1_MSK | RG_CDR_BR_GEN2_MSK);
+	tmp |= RG_CDR_BICLTR_GEN1_VAL(0x0c) | RG_CDR_BR_GEN2_VAL(0x07);
+	writel(tmp, phyd + ANA_RG_CTRL_SIGNAL4);
+
+	tmp = readl(phyd + PHYD_CTRL_SIGNAL_MODE4);
+	tmp &= ~(RG_CDR_BICLTD0_GEN1_MSK | RG_CDR_BICLTD1_GEN1_MSK);
+	tmp |= RG_CDR_BICLTD0_GEN1_VAL(0x08) | RG_CDR_BICLTD1_GEN1_VAL(0x02);
+	writel(tmp, phyd + PHYD_CTRL_SIGNAL_MODE4);
+
+	tmp = readl(phyd + PHYD_DESIGN_OPTION2);
+	tmp &= ~RG_LOCK_CNT_SEL_MSK;
+	tmp |= RG_LOCK_CNT_SEL_VAL(0x02);
+	writel(tmp, phyd + PHYD_DESIGN_OPTION2);
+
+	tmp = readl(phyd + PHYD_DESIGN_OPTION9);
+	tmp &= ~(RG_T2_MIN_MSK | RG_TG_MIN_MSK |
+		 RG_T2_MAX_MSK | RG_TG_MAX_MSK);
+	tmp |= RG_T2_MIN_VAL(0x12) | RG_TG_MIN_VAL(0x04) |
+	       RG_T2_MAX_VAL(0x31) | RG_TG_MAX_VAL(0x0e);
+	writel(tmp, phyd + PHYD_DESIGN_OPTION9);
+
+	tmp = readl(phyd + ANA_RG_CTRL_SIGNAL1);
+	tmp &= ~RG_IDRV_0DB_GEN1_MSK;
+	tmp |= RG_IDRV_0DB_GEN1_VAL(0x20);
+	writel(tmp, phyd + ANA_RG_CTRL_SIGNAL1);
+
+	tmp = readl(phyd + ANA_EQ_EYE_CTRL_SIGNAL1);
+	tmp &= ~RG_EQ_DLEQ_LFI_GEN1_MSK;
+	tmp |= RG_EQ_DLEQ_LFI_GEN1_VAL(0x03);
+	writel(tmp, phyd + ANA_EQ_EYE_CTRL_SIGNAL1);
+
+	dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index);
+}
+
+static void phy_v1_banks_init(struct mtk_tphy *tphy,
+			      struct mtk_phy_instance *instance)
+{
+	struct u2phy_banks *u2_banks = &instance->u2_banks;
+	struct u3phy_banks *u3_banks = &instance->u3_banks;
+
+	switch (instance->type) {
+	case PHY_TYPE_USB2:
+		u2_banks->misc = NULL;
+		u2_banks->fmreg = tphy->sif_base + SSUSB_SIFSLV_V1_U2FREQ;
+		u2_banks->com = instance->port_base + SSUSB_SIFSLV_V1_U2PHY_COM;
+		break;
+	case PHY_TYPE_USB3:
+	case PHY_TYPE_PCIE:
+		u3_banks->spllc = tphy->sif_base + SSUSB_SIFSLV_V1_SPLLC;
+		u3_banks->chip = NULL;
+		u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V1_U3PHYD;
+		u3_banks->phya = instance->port_base + SSUSB_SIFSLV_V1_U3PHYA;
+		break;
+	case PHY_TYPE_SATA:
+		u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V1_U3PHYD;
+		break;
+	default:
+		dev_err(tphy->dev, "incompatible PHY type\n");
+		return;
+	}
+}
+
+static void phy_v2_banks_init(struct mtk_tphy *tphy,
+			      struct mtk_phy_instance *instance)
+{
+	struct u2phy_banks *u2_banks = &instance->u2_banks;
+	struct u3phy_banks *u3_banks = &instance->u3_banks;
+
+	switch (instance->type) {
+	case PHY_TYPE_USB2:
+		u2_banks->misc = instance->port_base + SSUSB_SIFSLV_V2_MISC;
+		u2_banks->fmreg = instance->port_base + SSUSB_SIFSLV_V2_U2FREQ;
+		u2_banks->com = instance->port_base + SSUSB_SIFSLV_V2_U2PHY_COM;
+		break;
+	case PHY_TYPE_USB3:
+	case PHY_TYPE_PCIE:
+		u3_banks->spllc = instance->port_base + SSUSB_SIFSLV_V2_SPLLC;
+		u3_banks->chip = instance->port_base + SSUSB_SIFSLV_V2_CHIP;
+		u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V2_U3PHYD;
+		u3_banks->phya = instance->port_base + SSUSB_SIFSLV_V2_U3PHYA;
+		break;
+	default:
+		dev_err(tphy->dev, "incompatible PHY type\n");
+		return;
+	}
+}
+
+static int mtk_phy_init(struct phy *phy)
+{
+	struct mtk_phy_instance *instance = phy_get_drvdata(phy);
+	struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
+	int ret;
+
+	ret = clk_prepare_enable(tphy->u3phya_ref);
+	if (ret) {
+		dev_err(tphy->dev, "failed to enable u3phya_ref\n");
+		return ret;
+	}
+
+	ret = clk_prepare_enable(instance->ref_clk);
+	if (ret) {
+		dev_err(tphy->dev, "failed to enable ref_clk\n");
+		return ret;
+	}
+
+	switch (instance->type) {
+	case PHY_TYPE_USB2:
+		u2_phy_instance_init(tphy, instance);
+		break;
+	case PHY_TYPE_USB3:
+		u3_phy_instance_init(tphy, instance);
+		break;
+	case PHY_TYPE_PCIE:
+		pcie_phy_instance_init(tphy, instance);
+		break;
+	case PHY_TYPE_SATA:
+		sata_phy_instance_init(tphy, instance);
+		break;
+	default:
+		dev_err(tphy->dev, "incompatible PHY type\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int mtk_phy_power_on(struct phy *phy)
+{
+	struct mtk_phy_instance *instance = phy_get_drvdata(phy);
+	struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
+
+	if (instance->type == PHY_TYPE_USB2) {
+		u2_phy_instance_power_on(tphy, instance);
+		hs_slew_rate_calibrate(tphy, instance);
+	} else if (instance->type == PHY_TYPE_PCIE) {
+		pcie_phy_instance_power_on(tphy, instance);
+	}
+
+	return 0;
+}
+
+static int mtk_phy_power_off(struct phy *phy)
+{
+	struct mtk_phy_instance *instance = phy_get_drvdata(phy);
+	struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
+
+	if (instance->type == PHY_TYPE_USB2)
+		u2_phy_instance_power_off(tphy, instance);
+	else if (instance->type == PHY_TYPE_PCIE)
+		pcie_phy_instance_power_off(tphy, instance);
+
+	return 0;
+}
+
+static int mtk_phy_exit(struct phy *phy)
+{
+	struct mtk_phy_instance *instance = phy_get_drvdata(phy);
+	struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
+
+	if (instance->type == PHY_TYPE_USB2)
+		u2_phy_instance_exit(tphy, instance);
+
+	clk_disable_unprepare(instance->ref_clk);
+	clk_disable_unprepare(tphy->u3phya_ref);
+	return 0;
+}
+
+static struct phy *mtk_phy_xlate(struct device *dev,
+					struct of_phandle_args *args)
+{
+	struct mtk_tphy *tphy = dev_get_drvdata(dev);
+	struct mtk_phy_instance *instance = NULL;
+	struct device_node *phy_np = args->np;
+	int index;
+
+	if (args->args_count != 1) {
+		dev_err(dev, "invalid number of cells in 'phy' property\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	for (index = 0; index < tphy->nphys; index++)
+		if (phy_np == tphy->phys[index]->phy->dev.of_node) {
+			instance = tphy->phys[index];
+			break;
+		}
+
+	if (!instance) {
+		dev_err(dev, "failed to find appropriate phy\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	instance->type = args->args[0];
+	if (!(instance->type == PHY_TYPE_USB2 ||
+	      instance->type == PHY_TYPE_USB3 ||
+	      instance->type == PHY_TYPE_PCIE ||
+	      instance->type == PHY_TYPE_SATA)) {
+		dev_err(dev, "unsupported device type: %d\n", instance->type);
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (tphy->pdata->version == MTK_PHY_V1) {
+		phy_v1_banks_init(tphy, instance);
+	} else if (tphy->pdata->version == MTK_PHY_V2) {
+		phy_v2_banks_init(tphy, instance);
+	} else {
+		dev_err(dev, "phy version is not supported\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	return instance->phy;
+}
+
+static const struct phy_ops mtk_tphy_ops = {
+	.init		= mtk_phy_init,
+	.exit		= mtk_phy_exit,
+	.power_on	= mtk_phy_power_on,
+	.power_off	= mtk_phy_power_off,
+	.owner		= THIS_MODULE,
+};
+
+static const struct mtk_phy_pdata tphy_v1_pdata = {
+	.avoid_rx_sen_degradation = false,
+	.version = MTK_PHY_V1,
+};
+
+static const struct mtk_phy_pdata tphy_v2_pdata = {
+	.avoid_rx_sen_degradation = false,
+	.version = MTK_PHY_V2,
+};
+
+static const struct mtk_phy_pdata mt8173_pdata = {
+	.avoid_rx_sen_degradation = true,
+	.version = MTK_PHY_V1,
+};
+
+static const struct of_device_id mtk_tphy_id_table[] = {
+	{ .compatible = "mediatek,mt2701-u3phy", .data = &tphy_v1_pdata },
+	{ .compatible = "mediatek,mt2712-u3phy", .data = &tphy_v2_pdata },
+	{ .compatible = "mediatek,mt8173-u3phy", .data = &mt8173_pdata },
+	{ .compatible = "mediatek,generic-tphy-v1", .data = &tphy_v1_pdata },
+	{ .compatible = "mediatek,generic-tphy-v2", .data = &tphy_v2_pdata },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, mtk_tphy_id_table);
+
+static int mtk_tphy_probe(struct platform_device *pdev)
+{
+	const struct of_device_id *match;
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct device_node *child_np;
+	struct phy_provider *provider;
+	struct resource *sif_res;
+	struct mtk_tphy *tphy;
+	struct resource res;
+	int port, retval;
+
+	match = of_match_node(mtk_tphy_id_table, pdev->dev.of_node);
+	if (!match)
+		return -EINVAL;
+
+	tphy = devm_kzalloc(dev, sizeof(*tphy), GFP_KERNEL);
+	if (!tphy)
+		return -ENOMEM;
+
+	tphy->pdata = match->data;
+	tphy->nphys = of_get_child_count(np);
+	tphy->phys = devm_kcalloc(dev, tphy->nphys,
+				       sizeof(*tphy->phys), GFP_KERNEL);
+	if (!tphy->phys)
+		return -ENOMEM;
+
+	tphy->dev = dev;
+	platform_set_drvdata(pdev, tphy);
+
+	if (tphy->pdata->version == MTK_PHY_V1) {
+		/* get banks shared by multiple phys */
+		sif_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		tphy->sif_base = devm_ioremap_resource(dev, sif_res);
+		if (IS_ERR(tphy->sif_base)) {
+			dev_err(dev, "failed to remap sif regs\n");
+			return PTR_ERR(tphy->sif_base);
+		}
+	}
+
+	/* it's deprecated, make it optional for backward compatibility */
+	tphy->u3phya_ref = devm_clk_get(dev, "u3phya_ref");
+	if (IS_ERR(tphy->u3phya_ref)) {
+		if (PTR_ERR(tphy->u3phya_ref) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
+		tphy->u3phya_ref = NULL;
+	}
+
+	port = 0;
+	for_each_child_of_node(np, child_np) {
+		struct mtk_phy_instance *instance;
+		struct phy *phy;
+
+		instance = devm_kzalloc(dev, sizeof(*instance), GFP_KERNEL);
+		if (!instance) {
+			retval = -ENOMEM;
+			goto put_child;
+		}
+
+		tphy->phys[port] = instance;
+
+		phy = devm_phy_create(dev, child_np, &mtk_tphy_ops);
+		if (IS_ERR(phy)) {
+			dev_err(dev, "failed to create phy\n");
+			retval = PTR_ERR(phy);
+			goto put_child;
+		}
+
+		retval = of_address_to_resource(child_np, 0, &res);
+		if (retval) {
+			dev_err(dev, "failed to get address resource(id-%d)\n",
+				port);
+			goto put_child;
+		}
+
+		instance->port_base = devm_ioremap_resource(&phy->dev, &res);
+		if (IS_ERR(instance->port_base)) {
+			dev_err(dev, "failed to remap phy regs\n");
+			retval = PTR_ERR(instance->port_base);
+			goto put_child;
+		}
+
+		instance->phy = phy;
+		instance->index = port;
+		phy_set_drvdata(phy, instance);
+		port++;
+
+		/* if deprecated clock is provided, ignore instance's one */
+		if (tphy->u3phya_ref)
+			continue;
+
+		instance->ref_clk = devm_clk_get(&phy->dev, "ref");
+		if (IS_ERR(instance->ref_clk)) {
+			dev_err(dev, "failed to get ref_clk(id-%d)\n", port);
+			retval = PTR_ERR(instance->ref_clk);
+			goto put_child;
+		}
+	}
+
+	provider = devm_of_phy_provider_register(dev, mtk_phy_xlate);
+
+	return PTR_ERR_OR_ZERO(provider);
+put_child:
+	of_node_put(child_np);
+	return retval;
+}
+
+static struct platform_driver mtk_tphy_driver = {
+	.probe		= mtk_tphy_probe,
+	.driver		= {
+		.name	= "mtk-tphy",
+		.of_match_table = mtk_tphy_id_table,
+	},
+};
+
+module_platform_driver(mtk_tphy_driver);
+
+MODULE_AUTHOR("Chunfeng Yun <chunfeng.yun@mediatek.com>");
+MODULE_DESCRIPTION("MediaTek T-PHY driver");
+MODULE_LICENSE("GPL v2");