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u-boot/drivers/phy/phy-mtk-tphy.c
Frank Wunderlich 626892a779 phy: mtk-tphy: make shared reg optional for v1 
make the shared reg optional when version is v1 for sata

Suggested-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
2020-08-24 14:11:31 -04:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015 - 2019 MediaTek Inc.
* Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
* Ryder Lee <ryder.lee@mediatek.com>
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <generic-phy.h>
#include <malloc.h>
#include <mapmem.h>
#include <asm/io.h>
#include <dm/device_compat.h>
#include <dm/devres.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <dt-bindings/phy/phy.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 */
#define SSUSB_SIFSLV_V1_CHIP 0x300 /* shared by u3 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_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 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_FORCE_IDDIG BIT(9)
#define P2C_RG_VBUSVALID BIT(5)
#define P2C_RG_SESSEND BIT(4)
#define P2C_RG_AVALID BIT(2)
#define P2C_RG_IDDIG BIT(1)
#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)
/* 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_TPHY_V1 = 1,
MTK_TPHY_V2,
};
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 {
void __iomem *port_base;
const struct device_node *np;
union {
struct u2phy_banks u2_banks;
struct u3phy_banks u3_banks;
};
struct clk ref_clk; /* reference clock of (digital) phy */
struct clk da_ref_clk; /* reference clock of analog phy */
u32 index;
u32 type;
};
struct mtk_tphy {
struct udevice *dev;
void __iomem *sif_base;
enum mtk_phy_version version;
struct mtk_phy_instance **phys;
int nphys;
};
static void u2_phy_instance_init(struct mtk_tphy *tphy,
struct mtk_phy_instance *instance)
{
struct u2phy_banks *u2_banks = &instance->u2_banks;
/* switch to USB function, and enable usb pll */
clrsetbits_le32(u2_banks->com + U3P_U2PHYDTM0,
P2C_FORCE_UART_EN | P2C_FORCE_SUSPENDM,
P2C_RG_XCVRSEL_VAL(1) | P2C_RG_DATAIN_VAL(0));
clrbits_le32(u2_banks->com + U3P_U2PHYDTM1, P2C_RG_UART_EN);
setbits_le32(u2_banks->com + U3P_USBPHYACR0, PA0_RG_USB20_INTR_EN);
/* disable switch 100uA current to SSUSB */
clrbits_le32(u2_banks->com + U3P_USBPHYACR5, PA5_RG_U2_HS_100U_U3_EN);
clrbits_le32(u2_banks->com + U3P_U2PHYACR4, P2C_U2_GPIO_CTR_MSK);
/* DP/DM BC1.1 path Disable */
clrsetbits_le32(u2_banks->com + U3P_USBPHYACR6,
PA6_RG_U2_BC11_SW_EN | PA6_RG_U2_SQTH,
PA6_RG_U2_SQTH_VAL(2));
/* set HS slew rate */
clrsetbits_le32(u2_banks->com + U3P_USBPHYACR5,
PA5_RG_U2_HSTX_SRCTRL, PA5_RG_U2_HSTX_SRCTRL_VAL(4));
dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->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;
clrbits_le32(u2_banks->com + U3P_U2PHYDTM0,
P2C_RG_XCVRSEL | P2C_RG_DATAIN | P2C_DTM0_PART_MASK);
/* OTG Enable */
setbits_le32(u2_banks->com + U3P_USBPHYACR6,
PA6_RG_U2_OTG_VBUSCMP_EN);
clrsetbits_le32(u2_banks->com + U3P_U2PHYDTM1,
P2C_RG_SESSEND, P2C_RG_VBUSVALID | P2C_RG_AVALID);
dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->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;
clrbits_le32(u2_banks->com + U3P_U2PHYDTM0,
P2C_RG_XCVRSEL | P2C_RG_DATAIN);
/* OTG Disable */
clrbits_le32(u2_banks->com + U3P_USBPHYACR6,
PA6_RG_U2_OTG_VBUSCMP_EN);
clrsetbits_le32(u2_banks->com + U3P_U2PHYDTM1,
P2C_RG_VBUSVALID | P2C_RG_AVALID, P2C_RG_SESSEND);
dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index);
}
static void u3_phy_instance_init(struct mtk_tphy *tphy,
struct mtk_phy_instance *instance)
{
struct u3phy_banks *u3_banks = &instance->u3_banks;
/* gating PCIe Analog XTAL clock */
setbits_le32(u3_banks->spllc + U3P_SPLLC_XTALCTL3,
XC3_RG_U3_XTAL_RX_PWD | XC3_RG_U3_FRC_XTAL_RX_PWD);
/* gating XSQ */
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG0,
P3A_RG_XTAL_EXT_EN_U3, P3A_RG_XTAL_EXT_EN_U3_VAL(2));
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_REG9,
P3A_RG_RX_DAC_MUX, P3A_RG_RX_DAC_MUX_VAL(4));
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_REG6,
P3A_RG_TX_EIDLE_CM, P3A_RG_TX_EIDLE_CM_VAL(0xe));
clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_CDR1,
P3D_RG_CDR_BIR_LTD0 | P3D_RG_CDR_BIR_LTD1,
P3D_RG_CDR_BIR_LTD0_VAL(0xc) |
P3D_RG_CDR_BIR_LTD1_VAL(0x3));
clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_LFPS1,
P3D_RG_FWAKE_TH, P3D_RG_FWAKE_TH_VAL(0x34));
clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_RXDET1,
P3D_RG_RXDET_STB2_SET, P3D_RG_RXDET_STB2_SET_VAL(0x10));
clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_RXDET2,
P3D_RG_RXDET_STB2_SET_P3,
P3D_RG_RXDET_STB2_SET_P3_VAL(0x10));
dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index);
}
static void pcie_phy_instance_init(struct mtk_tphy *tphy,
struct mtk_phy_instance *instance)
{
struct u3phy_banks *u3_banks = &instance->u3_banks;
if (tphy->version != MTK_TPHY_V1)
return;
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG0,
P3A_RG_XTAL_EXT_PE1H | P3A_RG_XTAL_EXT_PE2H,
P3A_RG_XTAL_EXT_PE1H_VAL(0x2) |
P3A_RG_XTAL_EXT_PE2H_VAL(0x2));
/* ref clk drive */
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_REG1, P3A_RG_CLKDRV_AMP,
P3A_RG_CLKDRV_AMP_VAL(0x4));
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_REG0, P3A_RG_CLKDRV_OFF,
P3A_RG_CLKDRV_OFF_VAL(0x1));
/* SSC delta -5000ppm */
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG20,
P3A_RG_PLL_DELTA1_PE2H,
P3A_RG_PLL_DELTA1_PE2H_VAL(0x3c));
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG25,
P3A_RG_PLL_DELTA_PE2H,
P3A_RG_PLL_DELTA_PE2H_VAL(0x36));
/* change pll BW 0.6M */
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG5,
P3A_RG_PLL_BR_PE2H | P3A_RG_PLL_IC_PE2H,
P3A_RG_PLL_BR_PE2H_VAL(0x1) |
P3A_RG_PLL_IC_PE2H_VAL(0x1));
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG4,
P3A_RG_PLL_DIVEN_PE2H | P3A_RG_PLL_BC_PE2H,
P3A_RG_PLL_BC_PE2H_VAL(0x3));
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG6,
P3A_RG_PLL_IR_PE2H, P3A_RG_PLL_IR_PE2H_VAL(0x2));
clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG7,
P3A_RG_PLL_BP_PE2H, P3A_RG_PLL_BP_PE2H_VAL(0xa));
/* Tx Detect Rx Timing: 10us -> 5us */
clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_RXDET1,
P3D_RG_RXDET_STB2_SET,
P3D_RG_RXDET_STB2_SET_VAL(0x10));
clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_RXDET2,
P3D_RG_RXDET_STB2_SET_P3,
P3D_RG_RXDET_STB2_SET_P3_VAL(0x10));
/* wait for PCIe subsys register to active */
udelay(3000);
}
static void sata_phy_instance_init(struct mtk_tphy *tphy,
struct mtk_phy_instance *instance)
{
struct u3phy_banks *u3_banks = &instance->u3_banks;
clrsetbits_le32(u3_banks->phyd + ANA_RG_CTRL_SIGNAL6,
RG_CDR_BIRLTR_GEN1_MSK | RG_CDR_BC_GEN1_MSK,
RG_CDR_BIRLTR_GEN1_VAL(0x6) |
RG_CDR_BC_GEN1_VAL(0x1a));
clrsetbits_le32(u3_banks->phyd + ANA_EQ_EYE_CTRL_SIGNAL4,
RG_CDR_BIRLTD0_GEN1_MSK,
RG_CDR_BIRLTD0_GEN1_VAL(0x18));
clrsetbits_le32(u3_banks->phyd + ANA_EQ_EYE_CTRL_SIGNAL5,
RG_CDR_BIRLTD0_GEN3_MSK,
RG_CDR_BIRLTD0_GEN3_VAL(0x06));
clrsetbits_le32(u3_banks->phyd + ANA_RG_CTRL_SIGNAL4,
RG_CDR_BICLTR_GEN1_MSK | RG_CDR_BR_GEN2_MSK,
RG_CDR_BICLTR_GEN1_VAL(0x0c) |
RG_CDR_BR_GEN2_VAL(0x07));
clrsetbits_le32(u3_banks->phyd + PHYD_CTRL_SIGNAL_MODE4,
RG_CDR_BICLTD0_GEN1_MSK | RG_CDR_BICLTD1_GEN1_MSK,
RG_CDR_BICLTD0_GEN1_VAL(0x08) |
RG_CDR_BICLTD1_GEN1_VAL(0x02));
clrsetbits_le32(u3_banks->phyd + PHYD_DESIGN_OPTION2,
RG_LOCK_CNT_SEL_MSK,
RG_LOCK_CNT_SEL_VAL(0x02));
clrsetbits_le32(u3_banks->phyd + PHYD_DESIGN_OPTION9,
RG_T2_MIN_MSK | RG_TG_MIN_MSK |
RG_T2_MAX_MSK | RG_TG_MAX_MSK,
RG_T2_MIN_VAL(0x12) | RG_TG_MIN_VAL(0x04) |
RG_T2_MAX_VAL(0x31) | RG_TG_MAX_VAL(0x0e));
clrsetbits_le32(u3_banks->phyd + ANA_RG_CTRL_SIGNAL1,
RG_IDRV_0DB_GEN1_MSK,
RG_IDRV_0DB_GEN1_VAL(0x20));
clrsetbits_le32(u3_banks->phyd + ANA_EQ_EYE_CTRL_SIGNAL1,
RG_EQ_DLEQ_LFI_GEN1_MSK,
RG_EQ_DLEQ_LFI_GEN1_VAL(0x03));
}
static void pcie_phy_instance_power_on(struct mtk_tphy *tphy,
struct mtk_phy_instance *instance)
{
struct u3phy_banks *bank = &instance->u3_banks;
clrbits_le32(bank->chip + U3P_U3_CHIP_GPIO_CTLD,
P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST);
clrbits_le32(bank->chip + U3P_U3_CHIP_GPIO_CTLE,
P3C_RG_SWRST_U3_PHYD_FORCE_EN | P3C_RG_SWRST_U3_PHYD);
}
static void pcie_phy_instance_power_off(struct mtk_tphy *tphy,
struct mtk_phy_instance *instance)
{
struct u3phy_banks *bank = &instance->u3_banks;
setbits_le32(bank->chip + U3P_U3_CHIP_GPIO_CTLD,
P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST);
setbits_le32(bank->chip + U3P_U3_CHIP_GPIO_CTLE,
P3C_RG_SWRST_U3_PHYD_FORCE_EN | P3C_RG_SWRST_U3_PHYD);
}
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 = tphy->sif_base + SSUSB_SIFSLV_V1_CHIP;
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_tphy *tphy = dev_get_priv(phy->dev);
struct mtk_phy_instance *instance = tphy->phys[phy->id];
int ret;
ret = clk_enable(&instance->ref_clk);
if (ret < 0) {
dev_err(tphy->dev, "failed to enable ref_clk\n");
return ret;
}
ret = clk_enable(&instance->da_ref_clk);
if (ret < 0) {
dev_err(tphy->dev, "failed to enable da_ref_clk %d\n", ret);
clk_disable(&instance->ref_clk);
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_tphy *tphy = dev_get_priv(phy->dev);
struct mtk_phy_instance *instance = tphy->phys[phy->id];
if (instance->type == PHY_TYPE_USB2)
u2_phy_instance_power_on(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_tphy *tphy = dev_get_priv(phy->dev);
struct mtk_phy_instance *instance = tphy->phys[phy->id];
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_tphy *tphy = dev_get_priv(phy->dev);
struct mtk_phy_instance *instance = tphy->phys[phy->id];
clk_disable(&instance->da_ref_clk);
clk_disable(&instance->ref_clk);
return 0;
}
static int mtk_phy_xlate(struct phy *phy,
struct ofnode_phandle_args *args)
{
struct mtk_tphy *tphy = dev_get_priv(phy->dev);
struct mtk_phy_instance *instance = NULL;
const struct device_node *phy_np = ofnode_to_np(args->node);
u32 index;
if (!phy_np) {
dev_err(phy->dev, "null pointer phy node\n");
return -EINVAL;
}
if (args->args_count < 1) {
dev_err(phy->dev, "invalid number of cells in 'phy' property\n");
return -EINVAL;
}
for (index = 0; index < tphy->nphys; index++)
if (phy_np == tphy->phys[index]->np) {
instance = tphy->phys[index];
break;
}
if (!instance) {
dev_err(phy->dev, "failed to find appropriate phy\n");
return -EINVAL;
}
phy->id = index;
instance->type = args->args[1];
if (!(instance->type == PHY_TYPE_USB2 ||
instance->type == PHY_TYPE_USB3 ||
instance->type == PHY_TYPE_SATA ||
instance->type == PHY_TYPE_PCIE)) {
dev_err(phy->dev, "unsupported device type\n");
return -EINVAL;
}
if (tphy->version == MTK_TPHY_V1) {
phy_v1_banks_init(tphy, instance);
} else if (tphy->version == MTK_TPHY_V2) {
phy_v2_banks_init(tphy, instance);
} else {
dev_err(phy->dev, "phy version is not supported\n");
return -EINVAL;
}
return 0;
}
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,
.of_xlate = mtk_phy_xlate,
};
static int mtk_tphy_probe(struct udevice *dev)
{
struct mtk_tphy *tphy = dev_get_priv(dev);
ofnode subnode;
int index = 0;
tphy->nphys = dev_get_child_count(dev);
tphy->phys = devm_kcalloc(dev, tphy->nphys, sizeof(*tphy->phys),
GFP_KERNEL);
if (!tphy->phys)
return -ENOMEM;
tphy->dev = dev;
tphy->version = dev_get_driver_data(dev);
/* v1 has shared banks for usb/pcie mode, */
/* but not for sata mode */
if (tphy->version == MTK_TPHY_V1) {
tphy->sif_base = dev_read_addr_ptr(dev);
}
dev_for_each_subnode(subnode, dev) {
struct mtk_phy_instance *instance;
fdt_addr_t addr;
int err;
instance = devm_kzalloc(dev, sizeof(*instance), GFP_KERNEL);
if (!instance)
return -ENOMEM;
addr = ofnode_get_addr(subnode);
if (addr == FDT_ADDR_T_NONE)
return -ENOMEM;
instance->port_base = map_sysmem(addr, 0);
instance->index = index;
instance->np = ofnode_to_np(subnode);
tphy->phys[index] = instance;
index++;
err = clk_get_optional_nodev(subnode, "ref",
&instance->ref_clk);
if (err)
return err;
err = clk_get_optional_nodev(subnode, "da_ref",
&instance->da_ref_clk);
if (err)
return err;
}
return 0;
}
static const struct udevice_id mtk_tphy_id_table[] = {
{ .compatible = "mediatek,generic-tphy-v1", .data = MTK_TPHY_V1, },
{ .compatible = "mediatek,generic-tphy-v2", .data = MTK_TPHY_V2, },
{ }
};
U_BOOT_DRIVER(mtk_tphy) = {
.name = "mtk-tphy",
.id = UCLASS_PHY,
.of_match = mtk_tphy_id_table,
.ops = &mtk_tphy_ops,
.probe = mtk_tphy_probe,
.priv_auto_alloc_size = sizeof(struct mtk_tphy),
};
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