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-rw-r--r--drivers/phy/mediatek/phy-mtk-tphy.c1317
1 files changed, 1317 insertions, 0 deletions
diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
new file mode 100644
index 000000000..e906a8279
--- /dev/null
+++ b/drivers/phy/mediatek/phy-mtk-tphy.c
@@ -0,0 +1,1317 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2015 MediaTek Inc.
+ * Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
+ *
+ */
+
+#include <dt-bindings/phy/phy.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/iopoll.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include "phy-mtk-io.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/V3 sub-banks offset base address */
+/* V3: U2FREQ is not used anymore, but reserved */
+/* 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_MISC_REG1 0x04
+#define MR1_EFUSE_AUTO_LOAD_DIS BIT(6)
+
+#define U3P_USBPHYACR0 0x000
+#define PA0_RG_U2PLL_FORCE_ON BIT(15)
+#define PA0_USB20_PLL_PREDIV GENMASK(7, 6)
+#define PA0_RG_USB20_INTR_EN BIT(5)
+
+#define U3P_USBPHYACR1 0x004
+#define PA1_RG_INTR_CAL GENMASK(23, 19)
+#define PA1_RG_VRT_SEL GENMASK(14, 12)
+#define PA1_RG_TERM_SEL GENMASK(10, 8)
+
+#define U3P_USBPHYACR2 0x008
+#define PA2_RG_U2PLL_BW GENMASK(21, 19)
+#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_HS_100U_U3_EN BIT(11)
+
+#define U3P_USBPHYACR6 0x018
+#define PA6_RG_U2_PRE_EMP GENMASK(31, 30)
+#define PA6_RG_U2_BC11_SW_EN BIT(23)
+#define PA6_RG_U2_OTG_VBUSCMP_EN BIT(20)
+#define PA6_RG_U2_DISCTH GENMASK(7, 4)
+#define PA6_RG_U2_SQTH GENMASK(3, 0)
+
+#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_U2PHYA_RESV 0x030
+#define P2R_RG_U2PLL_FBDIV_26M 0x1bb13b
+#define P2R_RG_U2PLL_FBDIV_48M 0x3c0000
+
+#define U3P_U2PHYA_RESV1 0x044
+#define P2R_RG_U2PLL_REFCLK_SEL BIT(5)
+#define P2R_RG_U2PLL_FRA_EN BIT(3)
+
+#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_DMPULLDOWN BIT(7)
+#define P2C_RG_DPPULLDOWN BIT(6)
+#define P2C_RG_XCVRSEL GENMASK(5, 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_U2PHYBC12C 0x080
+#define P2C_RG_CHGDT_EN BIT(0)
+
+#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_IEXT_INTR GENMASK(15, 10)
+#define P3A_RG_CLKDRV_OFF GENMASK(3, 2)
+
+#define U3P_U3_PHYA_REG1 0x004
+#define P3A_RG_CLKDRV_AMP GENMASK(31, 29)
+
+#define U3P_U3_PHYA_REG6 0x018
+#define P3A_RG_TX_EIDLE_CM GENMASK(31, 28)
+
+#define U3P_U3_PHYA_REG9 0x024
+#define P3A_RG_RX_DAC_MUX GENMASK(5, 1)
+
+#define U3P_U3_PHYA_DA_REG0 0x100
+#define P3A_RG_XTAL_EXT_PE2H GENMASK(17, 16)
+#define P3A_RG_XTAL_EXT_PE1H GENMASK(13, 12)
+#define P3A_RG_XTAL_EXT_EN_U3 GENMASK(11, 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 U3P_U3_PHYA_DA_REG5 0x10c
+#define P3A_RG_PLL_BR_PE2H GENMASK(29, 28)
+#define P3A_RG_PLL_IC_PE2H GENMASK(15, 12)
+
+#define U3P_U3_PHYA_DA_REG6 0x110
+#define P3A_RG_PLL_IR_PE2H GENMASK(19, 16)
+
+#define U3P_U3_PHYA_DA_REG7 0x114
+#define P3A_RG_PLL_BP_PE2H GENMASK(19, 16)
+
+#define U3P_U3_PHYA_DA_REG20 0x13c
+#define P3A_RG_PLL_DELTA1_PE2H GENMASK(31, 16)
+
+#define U3P_U3_PHYA_DA_REG25 0x148
+#define P3A_RG_PLL_DELTA_PE2H GENMASK(15, 0)
+
+#define U3P_U3_PHYD_LFPS1 0x00c
+#define P3D_RG_FWAKE_TH GENMASK(21, 16)
+
+#define U3P_U3_PHYD_IMPCAL0 0x010
+#define P3D_RG_FORCE_TX_IMPEL BIT(31)
+#define P3D_RG_TX_IMPEL GENMASK(28, 24)
+
+#define U3P_U3_PHYD_IMPCAL1 0x014
+#define P3D_RG_FORCE_RX_IMPEL BIT(31)
+#define P3D_RG_RX_IMPEL GENMASK(28, 24)
+
+#define U3P_U3_PHYD_RSV 0x054
+#define P3D_RG_EFUSE_AUTO_LOAD_DIS BIT(12)
+
+#define U3P_U3_PHYD_CDR1 0x05c
+#define P3D_RG_CDR_BIR_LTD1 GENMASK(28, 24)
+#define P3D_RG_CDR_BIR_LTD0 GENMASK(12, 8)
+
+#define U3P_U3_PHYD_RXDET1 0x128
+#define P3D_RG_RXDET_STB2_SET GENMASK(17, 9)
+
+#define U3P_U3_PHYD_RXDET2 0x12c
+#define P3D_RG_RXDET_STB2_SET_P3 GENMASK(8, 0)
+
+#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_FREQDET_EN BIT(24)
+#define P2F_RG_CYCLECNT GENMASK(23, 0)
+
+#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_BICLTD0_GEN1_MSK GENMASK(11, 8)
+
+#define PHYD_DESIGN_OPTION2 0x24
+/* Symbol lock count selection */
+#define RG_LOCK_CNT_SEL_MSK GENMASK(5, 4)
+
+#define PHYD_DESIGN_OPTION9 0x40
+/* COMWAK GAP width window */
+#define RG_TG_MAX_MSK GENMASK(20, 16)
+/* COMINIT GAP width window */
+#define RG_T2_MAX_MSK GENMASK(13, 8)
+/* COMWAK GAP width window */
+#define RG_TG_MIN_MSK GENMASK(7, 5)
+/* COMINIT GAP width window */
+#define RG_T2_MIN_MSK GENMASK(4, 0)
+
+#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 ANA_RG_CTRL_SIGNAL4 0x58
+#define RG_CDR_BICLTR_GEN1_MSK GENMASK(23, 20)
+/* Loop filter R1 resistance adjustment for Gen1 speed */
+#define RG_CDR_BR_GEN2_MSK GENMASK(10, 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_BIRLTR_GEN1_MSK GENMASK(4, 0)
+
+#define ANA_EQ_EYE_CTRL_SIGNAL1 0x6c
+/* RX Gen1 LEQ tuning step */
+#define RG_EQ_DLEQ_LFI_GEN1_MSK GENMASK(11, 8)
+
+#define ANA_EQ_EYE_CTRL_SIGNAL4 0xd8
+#define RG_CDR_BIRLTD0_GEN1_MSK GENMASK(20, 16)
+
+#define ANA_EQ_EYE_CTRL_SIGNAL5 0xdc
+#define RG_CDR_BIRLTD0_GEN3_MSK GENMASK(4, 0)
+
+/* PHY switch between pcie/usb3/sgmii/sata */
+#define USB_PHY_SWITCH_CTRL 0x0
+#define RG_PHY_SW_TYPE GENMASK(3, 0)
+#define RG_PHY_SW_PCIE 0x0
+#define RG_PHY_SW_USB3 0x1
+#define RG_PHY_SW_SGMII 0x2
+#define RG_PHY_SW_SATA 0x3
+
+#define TPHY_CLKS_CNT 2
+
+enum mtk_phy_version {
+ MTK_PHY_V1 = 1,
+ MTK_PHY_V2,
+ MTK_PHY_V3,
+};
+
+struct mtk_phy_pdata {
+ /* avoid RX sensitivity level degradation only for mt8173 */
+ bool avoid_rx_sen_degradation;
+ /*
+ * workaround only for mt8195, HW fix it for others of V3,
+ * u2phy should use integer mode instead of fractional mode of
+ * 48M PLL, fix it by switching PLL to 26M from default 48M
+ */
+ bool sw_pll_48m_to_26m;
+ /*
+ * Some SoCs (e.g. mt8195) drop a bit when use auto load efuse,
+ * support sw way, also support it for v2/v3 optionally.
+ */
+ bool sw_efuse_supported;
+ 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_bulk_data clks[TPHY_CLKS_CNT];
+ u32 index;
+ u32 type;
+ struct regmap *type_sw;
+ u32 type_sw_reg;
+ u32 type_sw_index;
+ u32 efuse_sw_en;
+ u32 efuse_intr;
+ u32 efuse_tx_imp;
+ u32 efuse_rx_imp;
+ int eye_src;
+ int eye_vrt;
+ int eye_term;
+ int intr;
+ int discth;
+ int pre_emphasis;
+ bool bc12_en;
+};
+
+struct mtk_tphy {
+ struct device *dev;
+ void __iomem *sif_base; /* only shared sif */
+ const struct mtk_phy_pdata *pdata;
+ struct mtk_phy_instance **phys;
+ int nphys;
+ int src_ref_clk; /* MHZ, reference clock for slew rate calibrate */
+ int src_coef; /* coefficient for slew rate calibrate */
+};
+
+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;
+
+ /* HW V3 doesn't support slew rate cal anymore */
+ if (tphy->pdata->version == MTK_PHY_V3)
+ return;
+
+ /* use force value */
+ if (instance->eye_src)
+ return;
+
+ /* enable USB ring oscillator */
+ mtk_phy_set_bits(com + U3P_USBPHYACR5, PA5_RG_U2_HSTX_SRCAL_EN);
+ udelay(1);
+
+ /*enable free run clock */
+ mtk_phy_set_bits(fmreg + U3P_U2FREQ_FMMONR1, P2F_RG_FRCK_EN);
+
+ /* set cycle count as 1024, and select u2 channel */
+ tmp = readl(fmreg + U3P_U2FREQ_FMCR0);
+ tmp &= ~(P2F_RG_CYCLECNT | P2F_RG_MONCLK_SEL);
+ tmp |= FIELD_PREP(P2F_RG_CYCLECNT, U3P_FM_DET_CYCLE_CNT);
+ if (tphy->pdata->version == MTK_PHY_V1)
+ tmp |= FIELD_PREP(P2F_RG_MONCLK_SEL, instance->index >> 1);
+
+ writel(tmp, fmreg + U3P_U2FREQ_FMCR0);
+
+ /* enable frequency meter */
+ mtk_phy_set_bits(fmreg + U3P_U2FREQ_FMCR0, P2F_RG_FREQDET_EN);
+
+ /* 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 */
+ mtk_phy_clear_bits(fmreg + U3P_U2FREQ_FMCR0, P2F_RG_FREQDET_EN);
+
+ /*disable free run clock */
+ mtk_phy_clear_bits(fmreg + U3P_U2FREQ_FMMONR1, P2F_RG_FRCK_EN);
+
+ if (fm_out) {
+ /* ( 1024 / FM_OUT ) x reference clock frequency x coef */
+ tmp = tphy->src_ref_clk * tphy->src_coef;
+ tmp = (tmp * U3P_FM_DET_CYCLE_CNT) / 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 (clk:%d, coef:%d)\n",
+ instance->index, fm_out, calibration_val,
+ tphy->src_ref_clk, tphy->src_coef);
+
+ /* set HS slew rate */
+ mtk_phy_update_field(com + U3P_USBPHYACR5, PA5_RG_U2_HSTX_SRCTRL,
+ calibration_val);
+
+ /* disable USB ring oscillator */
+ mtk_phy_clear_bits(com + U3P_USBPHYACR5, PA5_RG_U2_HSTX_SRCAL_EN);
+}
+
+static void u3_phy_instance_init(struct mtk_tphy *tphy,
+ struct mtk_phy_instance *instance)
+{
+ struct u3phy_banks *u3_banks = &instance->u3_banks;
+ void __iomem *phya = u3_banks->phya;
+ void __iomem *phyd = u3_banks->phyd;
+
+ /* gating PCIe Analog XTAL clock */
+ mtk_phy_set_bits(u3_banks->spllc + U3P_SPLLC_XTALCTL3,
+ XC3_RG_U3_XTAL_RX_PWD | XC3_RG_U3_FRC_XTAL_RX_PWD);
+
+ /* gating XSQ */
+ mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG0, P3A_RG_XTAL_EXT_EN_U3, 2);
+
+ mtk_phy_update_field(phya + U3P_U3_PHYA_REG9, P3A_RG_RX_DAC_MUX, 4);
+
+ mtk_phy_update_field(phya + U3P_U3_PHYA_REG6, P3A_RG_TX_EIDLE_CM, 0xe);
+
+ mtk_phy_update_bits(u3_banks->phyd + U3P_U3_PHYD_CDR1,
+ P3D_RG_CDR_BIR_LTD0 | P3D_RG_CDR_BIR_LTD1,
+ FIELD_PREP(P3D_RG_CDR_BIR_LTD0, 0xc) |
+ FIELD_PREP(P3D_RG_CDR_BIR_LTD1, 0x3));
+
+ mtk_phy_update_field(phyd + U3P_U3_PHYD_LFPS1, P3D_RG_FWAKE_TH, 0x34);
+
+ mtk_phy_update_field(phyd + U3P_U3_PHYD_RXDET1, P3D_RG_RXDET_STB2_SET, 0x10);
+
+ mtk_phy_update_field(phyd + U3P_U3_PHYD_RXDET2, P3D_RG_RXDET_STB2_SET_P3, 0x10);
+
+ dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index);
+}
+
+static void u2_phy_pll_26m_set(struct mtk_tphy *tphy,
+ struct mtk_phy_instance *instance)
+{
+ struct u2phy_banks *u2_banks = &instance->u2_banks;
+ void __iomem *com = u2_banks->com;
+
+ if (!tphy->pdata->sw_pll_48m_to_26m)
+ return;
+
+ mtk_phy_update_field(com + U3P_USBPHYACR0, PA0_USB20_PLL_PREDIV, 0);
+
+ mtk_phy_update_field(com + U3P_USBPHYACR2, PA2_RG_U2PLL_BW, 3);
+
+ writel(P2R_RG_U2PLL_FBDIV_26M, com + U3P_U2PHYA_RESV);
+
+ mtk_phy_set_bits(com + U3P_U2PHYA_RESV1,
+ P2R_RG_U2PLL_FRA_EN | P2R_RG_U2PLL_REFCLK_SEL);
+}
+
+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;
+
+ /* switch to USB function, and enable usb pll */
+ mtk_phy_clear_bits(com + U3P_U2PHYDTM0, P2C_FORCE_UART_EN | P2C_FORCE_SUSPENDM);
+
+ mtk_phy_clear_bits(com + U3P_U2PHYDTM0,
+ P2C_RG_XCVRSEL | P2C_RG_DATAIN | P2C_DTM0_PART_MASK);
+
+ mtk_phy_clear_bits(com + U3P_U2PHYDTM1, P2C_RG_UART_EN);
+
+ mtk_phy_set_bits(com + U3P_USBPHYACR0, PA0_RG_USB20_INTR_EN);
+
+ /* disable switch 100uA current to SSUSB */
+ mtk_phy_clear_bits(com + U3P_USBPHYACR5, PA5_RG_U2_HS_100U_U3_EN);
+
+ mtk_phy_clear_bits(com + U3P_U2PHYACR4, P2C_U2_GPIO_CTR_MSK);
+
+ if (tphy->pdata->avoid_rx_sen_degradation) {
+ if (!index) {
+ mtk_phy_set_bits(com + U3P_USBPHYACR2, PA2_RG_SIF_U2PLL_FORCE_EN);
+
+ mtk_phy_clear_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
+ } else {
+ mtk_phy_set_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
+
+ mtk_phy_set_bits(com + U3P_U2PHYDTM0,
+ P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM);
+ }
+ }
+
+ /* DP/DM BC1.1 path Disable */
+ mtk_phy_clear_bits(com + U3P_USBPHYACR6, PA6_RG_U2_BC11_SW_EN);
+
+ mtk_phy_update_field(com + U3P_USBPHYACR6, PA6_RG_U2_SQTH, 2);
+
+ /* Workaround only for mt8195, HW fix it for others (V3) */
+ u2_phy_pll_26m_set(tphy, instance);
+
+ 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;
+
+ /* OTG Enable */
+ mtk_phy_set_bits(com + U3P_USBPHYACR6, PA6_RG_U2_OTG_VBUSCMP_EN);
+
+ mtk_phy_set_bits(com + U3P_U2PHYDTM1, P2C_RG_VBUSVALID | P2C_RG_AVALID);
+
+ mtk_phy_clear_bits(com + U3P_U2PHYDTM1, P2C_RG_SESSEND);
+
+ if (tphy->pdata->avoid_rx_sen_degradation && index) {
+ mtk_phy_set_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
+
+ mtk_phy_set_bits(com + U3P_U2PHYDTM0, P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM);
+ }
+ 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;
+
+ /* OTG Disable */
+ mtk_phy_clear_bits(com + U3P_USBPHYACR6, PA6_RG_U2_OTG_VBUSCMP_EN);
+
+ mtk_phy_clear_bits(com + U3P_U2PHYDTM1, P2C_RG_VBUSVALID | P2C_RG_AVALID);
+
+ mtk_phy_set_bits(com + U3P_U2PHYDTM1, P2C_RG_SESSEND);
+
+ if (tphy->pdata->avoid_rx_sen_degradation && index) {
+ mtk_phy_clear_bits(com + U3P_U2PHYDTM0, P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM);
+
+ mtk_phy_clear_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
+ }
+
+ 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;
+
+ if (tphy->pdata->avoid_rx_sen_degradation && index) {
+ mtk_phy_clear_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
+
+ mtk_phy_clear_bits(com + U3P_U2PHYDTM0, P2C_FORCE_SUSPENDM);
+ }
+}
+
+static void u2_phy_instance_set_mode(struct mtk_tphy *tphy,
+ struct mtk_phy_instance *instance,
+ enum phy_mode mode)
+{
+ struct u2phy_banks *u2_banks = &instance->u2_banks;
+ u32 tmp;
+
+ tmp = readl(u2_banks->com + U3P_U2PHYDTM1);
+ switch (mode) {
+ case PHY_MODE_USB_DEVICE:
+ tmp |= P2C_FORCE_IDDIG | P2C_RG_IDDIG;
+ break;
+ case PHY_MODE_USB_HOST:
+ tmp |= P2C_FORCE_IDDIG;
+ tmp &= ~P2C_RG_IDDIG;
+ break;
+ case PHY_MODE_USB_OTG:
+ tmp &= ~(P2C_FORCE_IDDIG | P2C_RG_IDDIG);
+ break;
+ default:
+ return;
+ }
+ writel(tmp, u2_banks->com + U3P_U2PHYDTM1);
+}
+
+static void pcie_phy_instance_init(struct mtk_tphy *tphy,
+ struct mtk_phy_instance *instance)
+{
+ struct u3phy_banks *u3_banks = &instance->u3_banks;
+ void __iomem *phya = u3_banks->phya;
+
+ if (tphy->pdata->version != MTK_PHY_V1)
+ return;
+
+ mtk_phy_update_bits(phya + U3P_U3_PHYA_DA_REG0,
+ P3A_RG_XTAL_EXT_PE1H | P3A_RG_XTAL_EXT_PE2H,
+ FIELD_PREP(P3A_RG_XTAL_EXT_PE1H, 0x2) |
+ FIELD_PREP(P3A_RG_XTAL_EXT_PE2H, 0x2));
+
+ /* ref clk drive */
+ mtk_phy_update_field(phya + U3P_U3_PHYA_REG1, P3A_RG_CLKDRV_AMP, 0x4);
+
+ mtk_phy_update_field(phya + U3P_U3_PHYA_REG0, P3A_RG_CLKDRV_OFF, 0x1);
+
+ /* SSC delta -5000ppm */
+ mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG20, P3A_RG_PLL_DELTA1_PE2H, 0x3c);
+
+ mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG25, P3A_RG_PLL_DELTA_PE2H, 0x36);
+
+ /* change pll BW 0.6M */
+ mtk_phy_update_bits(phya + U3P_U3_PHYA_DA_REG5,
+ P3A_RG_PLL_BR_PE2H | P3A_RG_PLL_IC_PE2H,
+ FIELD_PREP(P3A_RG_PLL_BR_PE2H, 0x1) |
+ FIELD_PREP(P3A_RG_PLL_IC_PE2H, 0x1));
+
+ mtk_phy_update_bits(phya + U3P_U3_PHYA_DA_REG4,
+ P3A_RG_PLL_DIVEN_PE2H | P3A_RG_PLL_BC_PE2H,
+ FIELD_PREP(P3A_RG_PLL_BC_PE2H, 0x3));
+
+ mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG6, P3A_RG_PLL_IR_PE2H, 0x2);
+
+ mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG7, P3A_RG_PLL_BP_PE2H, 0xa);
+
+ /* Tx Detect Rx Timing: 10us -> 5us */
+ mtk_phy_update_field(u3_banks->phyd + U3P_U3_PHYD_RXDET1,
+ P3D_RG_RXDET_STB2_SET, 0x10);
+
+ mtk_phy_update_field(u3_banks->phyd + U3P_U3_PHYD_RXDET2,
+ P3D_RG_RXDET_STB2_SET_P3, 0x10);
+
+ /* 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;
+
+ mtk_phy_clear_bits(bank->chip + U3P_U3_CHIP_GPIO_CTLD,
+ P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST);
+
+ mtk_phy_clear_bits(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;
+
+ mtk_phy_set_bits(bank->chip + U3P_U3_CHIP_GPIO_CTLD,
+ P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST);
+
+ mtk_phy_set_bits(bank->chip + U3P_U3_CHIP_GPIO_CTLE,
+ P3C_RG_SWRST_U3_PHYD_FORCE_EN | P3C_RG_SWRST_U3_PHYD);
+}
+
+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;
+
+ /* charge current adjustment */
+ mtk_phy_update_bits(phyd + ANA_RG_CTRL_SIGNAL6,
+ RG_CDR_BIRLTR_GEN1_MSK | RG_CDR_BC_GEN1_MSK,
+ FIELD_PREP(RG_CDR_BIRLTR_GEN1_MSK, 0x6) |
+ FIELD_PREP(RG_CDR_BC_GEN1_MSK, 0x1a));
+
+ mtk_phy_update_field(phyd + ANA_EQ_EYE_CTRL_SIGNAL4, RG_CDR_BIRLTD0_GEN1_MSK, 0x18);
+
+ mtk_phy_update_field(phyd + ANA_EQ_EYE_CTRL_SIGNAL5, RG_CDR_BIRLTD0_GEN3_MSK, 0x06);
+
+ mtk_phy_update_bits(phyd + ANA_RG_CTRL_SIGNAL4,
+ RG_CDR_BICLTR_GEN1_MSK | RG_CDR_BR_GEN2_MSK,
+ FIELD_PREP(RG_CDR_BICLTR_GEN1_MSK, 0x0c) |
+ FIELD_PREP(RG_CDR_BR_GEN2_MSK, 0x07));
+
+ mtk_phy_update_bits(phyd + PHYD_CTRL_SIGNAL_MODE4,
+ RG_CDR_BICLTD0_GEN1_MSK | RG_CDR_BICLTD1_GEN1_MSK,
+ FIELD_PREP(RG_CDR_BICLTD0_GEN1_MSK, 0x08) |
+ FIELD_PREP(RG_CDR_BICLTD1_GEN1_MSK, 0x02));
+
+ mtk_phy_update_field(phyd + PHYD_DESIGN_OPTION2, RG_LOCK_CNT_SEL_MSK, 0x02);
+
+ mtk_phy_update_bits(phyd + PHYD_DESIGN_OPTION9,
+ RG_T2_MIN_MSK | RG_TG_MIN_MSK,
+ FIELD_PREP(RG_T2_MIN_MSK, 0x12) |
+ FIELD_PREP(RG_TG_MIN_MSK, 0x04));
+
+ mtk_phy_update_bits(phyd + PHYD_DESIGN_OPTION9,
+ RG_T2_MAX_MSK | RG_TG_MAX_MSK,
+ FIELD_PREP(RG_T2_MAX_MSK, 0x31) |
+ FIELD_PREP(RG_TG_MAX_MSK, 0x0e));
+
+ mtk_phy_update_field(phyd + ANA_RG_CTRL_SIGNAL1, RG_IDRV_0DB_GEN1_MSK, 0x20);
+
+ mtk_phy_update_field(phyd + ANA_EQ_EYE_CTRL_SIGNAL1, RG_EQ_DLEQ_LFI_GEN1_MSK, 0x03);
+
+ 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 = 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 void phy_parse_property(struct mtk_tphy *tphy,
+ struct mtk_phy_instance *instance)
+{
+ struct device *dev = &instance->phy->dev;
+
+ if (instance->type != PHY_TYPE_USB2)
+ return;
+
+ instance->bc12_en = device_property_read_bool(dev, "mediatek,bc12");
+ device_property_read_u32(dev, "mediatek,eye-src",
+ &instance->eye_src);
+ device_property_read_u32(dev, "mediatek,eye-vrt",
+ &instance->eye_vrt);
+ device_property_read_u32(dev, "mediatek,eye-term",
+ &instance->eye_term);
+ device_property_read_u32(dev, "mediatek,intr",
+ &instance->intr);
+ device_property_read_u32(dev, "mediatek,discth",
+ &instance->discth);
+ device_property_read_u32(dev, "mediatek,pre-emphasis",
+ &instance->pre_emphasis);
+ dev_dbg(dev, "bc12:%d, src:%d, vrt:%d, term:%d, intr:%d, disc:%d\n",
+ instance->bc12_en, instance->eye_src,
+ instance->eye_vrt, instance->eye_term,
+ instance->intr, instance->discth);
+ dev_dbg(dev, "pre-emp:%d\n", instance->pre_emphasis);
+}
+
+static void u2_phy_props_set(struct mtk_tphy *tphy,
+ struct mtk_phy_instance *instance)
+{
+ struct u2phy_banks *u2_banks = &instance->u2_banks;
+ void __iomem *com = u2_banks->com;
+
+ if (instance->bc12_en) /* BC1.2 path Enable */
+ mtk_phy_set_bits(com + U3P_U2PHYBC12C, P2C_RG_CHGDT_EN);
+
+ if (tphy->pdata->version < MTK_PHY_V3 && instance->eye_src)
+ mtk_phy_update_field(com + U3P_USBPHYACR5, PA5_RG_U2_HSTX_SRCTRL,
+ instance->eye_src);
+
+ if (instance->eye_vrt)
+ mtk_phy_update_field(com + U3P_USBPHYACR1, PA1_RG_VRT_SEL,
+ instance->eye_vrt);
+
+ if (instance->eye_term)
+ mtk_phy_update_field(com + U3P_USBPHYACR1, PA1_RG_TERM_SEL,
+ instance->eye_term);
+
+ if (instance->intr) {
+ if (u2_banks->misc)
+ mtk_phy_set_bits(u2_banks->misc + U3P_MISC_REG1,
+ MR1_EFUSE_AUTO_LOAD_DIS);
+
+ mtk_phy_update_field(com + U3P_USBPHYACR1, PA1_RG_INTR_CAL,
+ instance->intr);
+ }
+
+ if (instance->discth)
+ mtk_phy_update_field(com + U3P_USBPHYACR6, PA6_RG_U2_DISCTH,
+ instance->discth);
+
+ if (instance->pre_emphasis)
+ mtk_phy_update_field(com + U3P_USBPHYACR6, PA6_RG_U2_PRE_EMP,
+ instance->pre_emphasis);
+}
+
+/* type switch for usb3/pcie/sgmii/sata */
+static int phy_type_syscon_get(struct mtk_phy_instance *instance,
+ struct device_node *dn)
+{
+ struct of_phandle_args args;
+ int ret;
+
+ /* type switch function is optional */
+ if (!of_property_read_bool(dn, "mediatek,syscon-type"))
+ return 0;
+
+ ret = of_parse_phandle_with_fixed_args(dn, "mediatek,syscon-type",
+ 2, 0, &args);
+ if (ret)
+ return ret;
+
+ instance->type_sw_reg = args.args[0];
+ instance->type_sw_index = args.args[1] & 0x3; /* <=3 */
+ instance->type_sw = syscon_node_to_regmap(args.np);
+ of_node_put(args.np);
+ dev_info(&instance->phy->dev, "type_sw - reg %#x, index %d\n",
+ instance->type_sw_reg, instance->type_sw_index);
+
+ return PTR_ERR_OR_ZERO(instance->type_sw);
+}
+
+static int phy_type_set(struct mtk_phy_instance *instance)
+{
+ int type;
+ u32 offset;
+
+ if (!instance->type_sw)
+ return 0;
+
+ switch (instance->type) {
+ case PHY_TYPE_USB3:
+ type = RG_PHY_SW_USB3;
+ break;
+ case PHY_TYPE_PCIE:
+ type = RG_PHY_SW_PCIE;
+ break;
+ case PHY_TYPE_SGMII:
+ type = RG_PHY_SW_SGMII;
+ break;
+ case PHY_TYPE_SATA:
+ type = RG_PHY_SW_SATA;
+ break;
+ case PHY_TYPE_USB2:
+ default:
+ return 0;
+ }
+
+ offset = instance->type_sw_index * BITS_PER_BYTE;
+ regmap_update_bits(instance->type_sw, instance->type_sw_reg,
+ RG_PHY_SW_TYPE << offset, type << offset);
+
+ return 0;
+}
+
+static int phy_efuse_get(struct mtk_tphy *tphy, struct mtk_phy_instance *instance)
+{
+ struct device *dev = &instance->phy->dev;
+ int ret = 0;
+
+ /* tphy v1 doesn't support sw efuse, skip it */
+ if (!tphy->pdata->sw_efuse_supported) {
+ instance->efuse_sw_en = 0;
+ return 0;
+ }
+
+ /* software efuse is optional */
+ instance->efuse_sw_en = device_property_read_bool(dev, "nvmem-cells");
+ if (!instance->efuse_sw_en)
+ return 0;
+
+ switch (instance->type) {
+ case PHY_TYPE_USB2:
+ ret = nvmem_cell_read_variable_le_u32(dev, "intr", &instance->efuse_intr);
+ if (ret) {
+ dev_err(dev, "fail to get u2 intr efuse, %d\n", ret);
+ break;
+ }
+
+ /* no efuse, ignore it */
+ if (!instance->efuse_intr) {
+ dev_warn(dev, "no u2 intr efuse, but dts enable it\n");
+ instance->efuse_sw_en = 0;
+ break;
+ }
+
+ dev_dbg(dev, "u2 efuse - intr %x\n", instance->efuse_intr);
+ break;
+
+ case PHY_TYPE_USB3:
+ case PHY_TYPE_PCIE:
+ ret = nvmem_cell_read_variable_le_u32(dev, "intr", &instance->efuse_intr);
+ if (ret) {
+ dev_err(dev, "fail to get u3 intr efuse, %d\n", ret);
+ break;
+ }
+
+ ret = nvmem_cell_read_variable_le_u32(dev, "rx_imp", &instance->efuse_rx_imp);
+ if (ret) {
+ dev_err(dev, "fail to get u3 rx_imp efuse, %d\n", ret);
+ break;
+ }
+
+ ret = nvmem_cell_read_variable_le_u32(dev, "tx_imp", &instance->efuse_tx_imp);
+ if (ret) {
+ dev_err(dev, "fail to get u3 tx_imp efuse, %d\n", ret);
+ break;
+ }
+
+ /* no efuse, ignore it */
+ if (!instance->efuse_intr &&
+ !instance->efuse_rx_imp &&
+ !instance->efuse_tx_imp) {
+ dev_warn(dev, "no u3 intr efuse, but dts enable it\n");
+ instance->efuse_sw_en = 0;
+ break;
+ }
+
+ dev_dbg(dev, "u3 efuse - intr %x, rx_imp %x, tx_imp %x\n",
+ instance->efuse_intr, instance->efuse_rx_imp,instance->efuse_tx_imp);
+ break;
+ default:
+ dev_err(dev, "no sw efuse for type %d\n", instance->type);
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static void phy_efuse_set(struct mtk_phy_instance *instance)
+{
+ struct device *dev = &instance->phy->dev;
+ struct u2phy_banks *u2_banks = &instance->u2_banks;
+ struct u3phy_banks *u3_banks = &instance->u3_banks;
+
+ if (!instance->efuse_sw_en)
+ return;
+
+ switch (instance->type) {
+ case PHY_TYPE_USB2:
+ mtk_phy_set_bits(u2_banks->misc + U3P_MISC_REG1, MR1_EFUSE_AUTO_LOAD_DIS);
+
+ mtk_phy_update_field(u2_banks->com + U3P_USBPHYACR1, PA1_RG_INTR_CAL,
+ instance->efuse_intr);
+ break;
+ case PHY_TYPE_USB3:
+ case PHY_TYPE_PCIE:
+ mtk_phy_set_bits(u3_banks->phyd + U3P_U3_PHYD_RSV, P3D_RG_EFUSE_AUTO_LOAD_DIS);
+
+ mtk_phy_update_field(u3_banks->phyd + U3P_U3_PHYD_IMPCAL0, P3D_RG_TX_IMPEL,
+ instance->efuse_tx_imp);
+ mtk_phy_set_bits(u3_banks->phyd + U3P_U3_PHYD_IMPCAL0, P3D_RG_FORCE_TX_IMPEL);
+
+ mtk_phy_update_field(u3_banks->phyd + U3P_U3_PHYD_IMPCAL1, P3D_RG_RX_IMPEL,
+ instance->efuse_rx_imp);
+ mtk_phy_set_bits(u3_banks->phyd + U3P_U3_PHYD_IMPCAL1, P3D_RG_FORCE_RX_IMPEL);
+
+ mtk_phy_update_field(u3_banks->phya + U3P_U3_PHYA_REG0, P3A_RG_IEXT_INTR,
+ instance->efuse_intr);
+ break;
+ default:
+ dev_warn(dev, "no sw efuse for type %d\n", instance->type);
+ break;
+ }
+}
+
+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_bulk_prepare_enable(TPHY_CLKS_CNT, instance->clks);
+ if (ret)
+ return ret;
+
+ phy_efuse_set(instance);
+
+ switch (instance->type) {
+ case PHY_TYPE_USB2:
+ u2_phy_instance_init(tphy, instance);
+ u2_phy_props_set(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;
+ case PHY_TYPE_SGMII:
+ /* nothing to do, only used to set type */
+ break;
+ default:
+ dev_err(tphy->dev, "incompatible PHY type\n");
+ clk_bulk_disable_unprepare(TPHY_CLKS_CNT, instance->clks);
+ 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_bulk_disable_unprepare(TPHY_CLKS_CNT, instance->clks);
+ return 0;
+}
+
+static int mtk_phy_set_mode(struct phy *phy, enum phy_mode mode, int submode)
+{
+ 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_set_mode(tphy, instance, mode);
+
+ 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;
+ int ret;
+
+ 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 ||
+ instance->type == PHY_TYPE_SGMII)) {
+ dev_err(dev, "unsupported device type: %d\n", instance->type);
+ return ERR_PTR(-EINVAL);
+ }
+
+ switch (tphy->pdata->version) {
+ case MTK_PHY_V1:
+ phy_v1_banks_init(tphy, instance);
+ break;
+ case MTK_PHY_V2:
+ case MTK_PHY_V3:
+ phy_v2_banks_init(tphy, instance);
+ break;
+ default:
+ dev_err(dev, "phy version is not supported\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ ret = phy_efuse_get(tphy, instance);
+ if (ret)
+ return ERR_PTR(ret);
+
+ phy_parse_property(tphy, instance);
+ phy_type_set(instance);
+
+ 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,
+ .set_mode = mtk_phy_set_mode,
+ .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,
+ .sw_efuse_supported = true,
+ .version = MTK_PHY_V2,
+};
+
+static const struct mtk_phy_pdata tphy_v3_pdata = {
+ .sw_efuse_supported = true,
+ .version = MTK_PHY_V3,
+};
+
+static const struct mtk_phy_pdata mt8173_pdata = {
+ .avoid_rx_sen_degradation = true,
+ .version = MTK_PHY_V1,
+};
+
+static const struct mtk_phy_pdata mt8195_pdata = {
+ .sw_pll_48m_to_26m = true,
+ .sw_efuse_supported = true,
+ .version = MTK_PHY_V3,
+};
+
+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,mt8195-tphy", .data = &mt8195_pdata },
+ { .compatible = "mediatek,generic-tphy-v1", .data = &tphy_v1_pdata },
+ { .compatible = "mediatek,generic-tphy-v2", .data = &tphy_v2_pdata },
+ { .compatible = "mediatek,generic-tphy-v3", .data = &tphy_v3_pdata },
+ { },
+};
+MODULE_DEVICE_TABLE(of, mtk_tphy_id_table);
+
+static int mtk_tphy_probe(struct platform_device *pdev)
+{
+ 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;
+
+ tphy = devm_kzalloc(dev, sizeof(*tphy), GFP_KERNEL);
+ if (!tphy)
+ return -ENOMEM;
+
+ tphy->pdata = of_device_get_match_data(dev);
+ if (!tphy->pdata)
+ return -EINVAL;
+
+ 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);
+
+ sif_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ /* SATA phy of V1 needn't it if not shared with PCIe or USB */
+ if (sif_res && tphy->pdata->version == MTK_PHY_V1) {
+ /* get banks shared by multiple phys */
+ 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);
+ }
+ }
+
+ if (tphy->pdata->version < MTK_PHY_V3) {
+ tphy->src_ref_clk = U3P_REF_CLK;
+ tphy->src_coef = U3P_SLEW_RATE_COEF;
+ /* update parameters of slew rate calibrate if exist */
+ device_property_read_u32(dev, "mediatek,src-ref-clk-mhz",
+ &tphy->src_ref_clk);
+ device_property_read_u32(dev, "mediatek,src-coef",
+ &tphy->src_coef);
+ }
+
+ port = 0;
+ for_each_child_of_node(np, child_np) {
+ struct mtk_phy_instance *instance;
+ struct clk_bulk_data *clks;
+ struct device *subdev;
+ 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;
+ }
+
+ subdev = &phy->dev;
+ retval = of_address_to_resource(child_np, 0, &res);
+ if (retval) {
+ dev_err(subdev, "failed to get address resource(id-%d)\n",
+ port);
+ goto put_child;
+ }
+
+ instance->port_base = devm_ioremap_resource(subdev, &res);
+ if (IS_ERR(instance->port_base)) {
+ retval = PTR_ERR(instance->port_base);
+ goto put_child;
+ }
+
+ instance->phy = phy;
+ instance->index = port;
+ phy_set_drvdata(phy, instance);
+ port++;
+
+ clks = instance->clks;
+ clks[0].id = "ref"; /* digital (& analog) clock */
+ clks[1].id = "da_ref"; /* analog clock */
+ retval = devm_clk_bulk_get_optional(subdev, TPHY_CLKS_CNT, clks);
+ if (retval)
+ goto put_child;
+
+ retval = phy_type_syscon_get(instance, child_np);
+ if (retval)
+ 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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 06:01:23 +0000