/* * Copyright (c) 2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* QMP PHY QSERDES COM registers */ #define QSERDES_COM_BG_TIMER 0x00c #define QSERDES_COM_SSC_EN_CENTER 0x010 #define QSERDES_COM_SSC_ADJ_PER1 0x014 #define QSERDES_COM_SSC_ADJ_PER2 0x018 #define QSERDES_COM_SSC_PER1 0x01c #define QSERDES_COM_SSC_PER2 0x020 #define QSERDES_COM_SSC_STEP_SIZE1 0x024 #define QSERDES_COM_SSC_STEP_SIZE2 0x028 #define QSERDES_COM_BIAS_EN_CLKBUFLR_EN 0x034 #define QSERDES_COM_CLK_ENABLE1 0x038 #define QSERDES_COM_SYS_CLK_CTRL 0x03c #define QSERDES_COM_SYSCLK_BUF_ENABLE 0x040 #define QSERDES_COM_PLL_IVCO 0x048 #define QSERDES_COM_LOCK_CMP1_MODE0 0x04c #define QSERDES_COM_LOCK_CMP2_MODE0 0x050 #define QSERDES_COM_LOCK_CMP3_MODE0 0x054 #define QSERDES_COM_LOCK_CMP1_MODE1 0x058 #define QSERDES_COM_LOCK_CMP2_MODE1 0x05c #define QSERDES_COM_LOCK_CMP3_MODE1 0x060 #define QSERDES_COM_BG_TRIM 0x070 #define QSERDES_COM_CLK_EP_DIV 0x074 #define QSERDES_COM_CP_CTRL_MODE0 0x078 #define QSERDES_COM_CP_CTRL_MODE1 0x07c #define QSERDES_COM_PLL_RCTRL_MODE0 0x084 #define QSERDES_COM_PLL_RCTRL_MODE1 0x088 #define QSERDES_COM_PLL_CCTRL_MODE0 0x090 #define QSERDES_COM_PLL_CCTRL_MODE1 0x094 #define QSERDES_COM_SYSCLK_EN_SEL 0x0ac #define QSERDES_COM_RESETSM_CNTRL 0x0b4 #define QSERDES_COM_RESTRIM_CTRL 0x0bc #define QSERDES_COM_RESCODE_DIV_NUM 0x0c4 #define QSERDES_COM_LOCK_CMP_EN 0x0c8 #define QSERDES_COM_LOCK_CMP_CFG 0x0cc #define QSERDES_COM_DEC_START_MODE0 0x0d0 #define QSERDES_COM_DEC_START_MODE1 0x0d4 #define QSERDES_COM_DIV_FRAC_START1_MODE0 0x0dc #define QSERDES_COM_DIV_FRAC_START2_MODE0 0x0e0 #define QSERDES_COM_DIV_FRAC_START3_MODE0 0x0e4 #define QSERDES_COM_DIV_FRAC_START1_MODE1 0x0e8 #define QSERDES_COM_DIV_FRAC_START2_MODE1 0x0ec #define QSERDES_COM_DIV_FRAC_START3_MODE1 0x0f0 #define QSERDES_COM_INTEGLOOP_GAIN0_MODE0 0x108 #define QSERDES_COM_INTEGLOOP_GAIN1_MODE0 0x10c #define QSERDES_COM_INTEGLOOP_GAIN0_MODE1 0x110 #define QSERDES_COM_INTEGLOOP_GAIN1_MODE1 0x114 #define QSERDES_COM_VCO_TUNE_CTRL 0x124 #define QSERDES_COM_VCO_TUNE_MAP 0x128 #define QSERDES_COM_VCO_TUNE1_MODE0 0x12c #define QSERDES_COM_VCO_TUNE2_MODE0 0x130 #define QSERDES_COM_VCO_TUNE1_MODE1 0x134 #define QSERDES_COM_VCO_TUNE2_MODE1 0x138 #define QSERDES_COM_VCO_TUNE_TIMER1 0x144 #define QSERDES_COM_VCO_TUNE_TIMER2 0x148 #define QSERDES_COM_BG_CTRL 0x170 #define QSERDES_COM_CLK_SELECT 0x174 #define QSERDES_COM_HSCLK_SEL 0x178 #define QSERDES_COM_CORECLK_DIV 0x184 #define QSERDES_COM_CORE_CLK_EN 0x18c #define QSERDES_COM_C_READY_STATUS 0x190 #define QSERDES_COM_CMN_CONFIG 0x194 #define QSERDES_COM_SVS_MODE_CLK_SEL 0x19c #define QSERDES_COM_DEBUG_BUS0 0x1a0 #define QSERDES_COM_DEBUG_BUS1 0x1a4 #define QSERDES_COM_DEBUG_BUS2 0x1a8 #define QSERDES_COM_DEBUG_BUS3 0x1ac #define QSERDES_COM_DEBUG_BUS_SEL 0x1b0 #define QSERDES_COM_CORECLK_DIV_MODE1 0x1bc /* QMP PHY TX registers */ #define QSERDES_TX_RES_CODE_LANE_OFFSET 0x054 #define QSERDES_TX_DEBUG_BUS_SEL 0x064 #define QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN 0x068 #define QSERDES_TX_LANE_MODE 0x094 #define QSERDES_TX_RCV_DETECT_LVL_2 0x0ac /* QMP PHY RX registers */ #define QSERDES_RX_UCDR_SO_GAIN_HALF 0x010 #define QSERDES_RX_UCDR_SO_GAIN 0x01c #define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN 0x040 #define QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE 0x048 #define QSERDES_RX_RX_TERM_BW 0x090 #define QSERDES_RX_RX_EQ_GAIN1_LSB 0x0c4 #define QSERDES_RX_RX_EQ_GAIN1_MSB 0x0c8 #define QSERDES_RX_RX_EQ_GAIN2_LSB 0x0cc #define QSERDES_RX_RX_EQ_GAIN2_MSB 0x0d0 #define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2 0x0d8 #define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3 0x0dc #define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4 0x0e0 #define QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x108 #define QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2 0x10c #define QSERDES_RX_SIGDET_ENABLES 0x110 #define QSERDES_RX_SIGDET_CNTRL 0x114 #define QSERDES_RX_SIGDET_LVL 0x118 #define QSERDES_RX_SIGDET_DEGLITCH_CNTRL 0x11c #define QSERDES_RX_RX_BAND 0x120 #define QSERDES_RX_RX_INTERFACE_MODE 0x12c /* QMP PHY PCS registers */ #define QPHY_POWER_DOWN_CONTROL 0x04 #define QPHY_TXDEEMPH_M6DB_V0 0x24 #define QPHY_TXDEEMPH_M3P5DB_V0 0x28 #define QPHY_ENDPOINT_REFCLK_DRIVE 0x54 #define QPHY_RX_IDLE_DTCT_CNTRL 0x58 #define QPHY_POWER_STATE_CONFIG1 0x60 #define QPHY_POWER_STATE_CONFIG2 0x64 #define QPHY_POWER_STATE_CONFIG4 0x6c #define QPHY_LOCK_DETECT_CONFIG1 0x80 #define QPHY_LOCK_DETECT_CONFIG2 0x84 #define QPHY_LOCK_DETECT_CONFIG3 0x88 #define QPHY_PWRUP_RESET_DLY_TIME_AUXCLK 0xa0 #define QPHY_LP_WAKEUP_DLY_TIME_AUXCLK 0xa4 /* QPHY_SW_RESET bit */ #define SW_RESET BIT(0) /* QPHY_POWER_DOWN_CONTROL */ #define SW_PWRDN BIT(0) #define REFCLK_DRV_DSBL BIT(1) /* QPHY_START_CONTROL bits */ #define SERDES_START BIT(0) #define PCS_START BIT(1) #define PLL_READY_GATE_EN BIT(3) /* QPHY_PCS_STATUS bit */ #define PHYSTATUS BIT(6) /* QPHY_COM_PCS_READY_STATUS bit */ #define PCS_READY BIT(0) #define PHY_INIT_COMPLETE_TIMEOUT 1000 #define POWER_DOWN_DELAY_US_MIN 10 #define POWER_DOWN_DELAY_US_MAX 11 #define MAX_PROP_NAME 32 struct qmp_phy_init_tbl { unsigned int offset; unsigned int val; /* * register part of layout ? * if yes, then offset gives index in the reg-layout */ int in_layout; }; #define QMP_PHY_INIT_CFG(o, v) \ { \ .offset = o, \ .val = v, \ } #define QMP_PHY_INIT_CFG_L(o, v) \ { \ .offset = o, \ .val = v, \ .in_layout = 1, \ } /* set of registers with offsets different per-PHY */ enum qphy_reg_layout { /* Common block control registers */ QPHY_COM_SW_RESET, QPHY_COM_POWER_DOWN_CONTROL, QPHY_COM_START_CONTROL, QPHY_COM_PCS_READY_STATUS, /* PCS registers */ QPHY_PLL_LOCK_CHK_DLY_TIME, QPHY_FLL_CNTRL1, QPHY_FLL_CNTRL2, QPHY_FLL_CNT_VAL_L, QPHY_FLL_CNT_VAL_H_TOL, QPHY_FLL_MAN_CODE, QPHY_SW_RESET, QPHY_START_CTRL, QPHY_PCS_READY_STATUS, }; static const unsigned int pciephy_regs_layout[] = { [QPHY_COM_SW_RESET] = 0x400, [QPHY_COM_POWER_DOWN_CONTROL] = 0x404, [QPHY_COM_START_CONTROL] = 0x408, [QPHY_COM_PCS_READY_STATUS] = 0x448, [QPHY_PLL_LOCK_CHK_DLY_TIME] = 0xa8, [QPHY_FLL_CNTRL1] = 0xc4, [QPHY_FLL_CNTRL2] = 0xc8, [QPHY_FLL_CNT_VAL_L] = 0xcc, [QPHY_FLL_CNT_VAL_H_TOL] = 0xd0, [QPHY_FLL_MAN_CODE] = 0xd4, [QPHY_SW_RESET] = 0x00, [QPHY_START_CTRL] = 0x08, [QPHY_PCS_READY_STATUS] = 0x174, }; static const unsigned int usb3phy_regs_layout[] = { [QPHY_FLL_CNTRL1] = 0xc0, [QPHY_FLL_CNTRL2] = 0xc4, [QPHY_FLL_CNT_VAL_L] = 0xc8, [QPHY_FLL_CNT_VAL_H_TOL] = 0xcc, [QPHY_FLL_MAN_CODE] = 0xd0, [QPHY_SW_RESET] = 0x00, [QPHY_START_CTRL] = 0x08, [QPHY_PCS_READY_STATUS] = 0x17c, }; static const struct qmp_phy_init_tbl msm8996_pcie_serdes_tbl[] = { QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x1c), QMP_PHY_INIT_CFG(QSERDES_COM_CLK_ENABLE1, 0x10), QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x33), QMP_PHY_INIT_CFG(QSERDES_COM_CMN_CONFIG, 0x06), QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_EN, 0x42), QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_MAP, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER1, 0xff), QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER2, 0x1f), QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x01), QMP_PHY_INIT_CFG(QSERDES_COM_SVS_MODE_CLK_SEL, 0x01), QMP_PHY_INIT_CFG(QSERDES_COM_CORE_CLK_EN, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_CORECLK_DIV, 0x0a), QMP_PHY_INIT_CFG(QSERDES_COM_BG_TIMER, 0x09), QMP_PHY_INIT_CFG(QSERDES_COM_DEC_START_MODE0, 0x82), QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START3_MODE0, 0x03), QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START2_MODE0, 0x55), QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START1_MODE0, 0x55), QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP3_MODE0, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP2_MODE0, 0x1a), QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP1_MODE0, 0x0a), QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x33), QMP_PHY_INIT_CFG(QSERDES_COM_SYS_CLK_CTRL, 0x02), QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_BUF_ENABLE, 0x1f), QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_EN_SEL, 0x04), QMP_PHY_INIT_CFG(QSERDES_COM_CP_CTRL_MODE0, 0x0b), QMP_PHY_INIT_CFG(QSERDES_COM_PLL_RCTRL_MODE0, 0x16), QMP_PHY_INIT_CFG(QSERDES_COM_PLL_CCTRL_MODE0, 0x28), QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN1_MODE0, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0x80), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_EN_CENTER, 0x01), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER1, 0x31), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER2, 0x01), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER1, 0x02), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER2, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE1, 0x2f), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE2, 0x19), QMP_PHY_INIT_CFG(QSERDES_COM_RESCODE_DIV_NUM, 0x15), QMP_PHY_INIT_CFG(QSERDES_COM_BG_TRIM, 0x0f), QMP_PHY_INIT_CFG(QSERDES_COM_PLL_IVCO, 0x0f), QMP_PHY_INIT_CFG(QSERDES_COM_CLK_EP_DIV, 0x19), QMP_PHY_INIT_CFG(QSERDES_COM_CLK_ENABLE1, 0x10), QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_RESCODE_DIV_NUM, 0x40), }; static const struct qmp_phy_init_tbl msm8996_pcie_tx_tbl[] = { QMP_PHY_INIT_CFG(QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN, 0x45), QMP_PHY_INIT_CFG(QSERDES_TX_LANE_MODE, 0x06), }; static const struct qmp_phy_init_tbl msm8996_pcie_rx_tbl[] = { QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_ENABLES, 0x1c), QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x01), QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x00), QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0xdb), QMP_PHY_INIT_CFG(QSERDES_RX_RX_BAND, 0x18), QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN, 0x04), QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN_HALF, 0x04), QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x4b), QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x14), QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_LVL, 0x19), }; static const struct qmp_phy_init_tbl msm8996_pcie_pcs_tbl[] = { QMP_PHY_INIT_CFG(QPHY_RX_IDLE_DTCT_CNTRL, 0x4c), QMP_PHY_INIT_CFG(QPHY_PWRUP_RESET_DLY_TIME_AUXCLK, 0x00), QMP_PHY_INIT_CFG(QPHY_LP_WAKEUP_DLY_TIME_AUXCLK, 0x01), QMP_PHY_INIT_CFG_L(QPHY_PLL_LOCK_CHK_DLY_TIME, 0x05), QMP_PHY_INIT_CFG(QPHY_ENDPOINT_REFCLK_DRIVE, 0x05), QMP_PHY_INIT_CFG(QPHY_POWER_DOWN_CONTROL, 0x02), QMP_PHY_INIT_CFG(QPHY_POWER_STATE_CONFIG4, 0x00), QMP_PHY_INIT_CFG(QPHY_POWER_STATE_CONFIG1, 0xa3), QMP_PHY_INIT_CFG(QPHY_TXDEEMPH_M3P5DB_V0, 0x0e), }; static const struct qmp_phy_init_tbl msm8996_usb3_serdes_tbl[] = { QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_EN_SEL, 0x14), QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x08), QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x30), QMP_PHY_INIT_CFG(QSERDES_COM_CMN_CONFIG, 0x06), QMP_PHY_INIT_CFG(QSERDES_COM_SVS_MODE_CLK_SEL, 0x01), QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_BG_TRIM, 0x0f), QMP_PHY_INIT_CFG(QSERDES_COM_PLL_IVCO, 0x0f), QMP_PHY_INIT_CFG(QSERDES_COM_SYS_CLK_CTRL, 0x04), /* PLL and Loop filter settings */ QMP_PHY_INIT_CFG(QSERDES_COM_DEC_START_MODE0, 0x82), QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START1_MODE0, 0x55), QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START2_MODE0, 0x55), QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START3_MODE0, 0x03), QMP_PHY_INIT_CFG(QSERDES_COM_CP_CTRL_MODE0, 0x0b), QMP_PHY_INIT_CFG(QSERDES_COM_PLL_RCTRL_MODE0, 0x16), QMP_PHY_INIT_CFG(QSERDES_COM_PLL_CCTRL_MODE0, 0x28), QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0x80), QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_CTRL, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP1_MODE0, 0x15), QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP2_MODE0, 0x34), QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP3_MODE0, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_CORE_CLK_EN, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_CFG, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_MAP, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_BG_TIMER, 0x0a), /* SSC settings */ QMP_PHY_INIT_CFG(QSERDES_COM_SSC_EN_CENTER, 0x01), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER1, 0x31), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER2, 0x01), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER1, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER2, 0x00), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE1, 0xde), QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE2, 0x07), }; static const struct qmp_phy_init_tbl msm8996_usb3_tx_tbl[] = { QMP_PHY_INIT_CFG(QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN, 0x45), QMP_PHY_INIT_CFG(QSERDES_TX_RCV_DETECT_LVL_2, 0x12), QMP_PHY_INIT_CFG(QSERDES_TX_LANE_MODE, 0x06), }; static const struct qmp_phy_init_tbl msm8996_usb3_rx_tbl[] = { QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_FASTLOCK_FO_GAIN, 0x0b), QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN, 0x04), QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x02), QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4c), QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0xbb), QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x77), QMP_PHY_INIT_CFG(QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x80), QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_CNTRL, 0x03), QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_LVL, 0x18), QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x16), }; static const struct qmp_phy_init_tbl msm8996_usb3_pcs_tbl[] = { /* FLL settings */ QMP_PHY_INIT_CFG_L(QPHY_FLL_CNTRL2, 0x03), QMP_PHY_INIT_CFG_L(QPHY_FLL_CNTRL1, 0x02), QMP_PHY_INIT_CFG_L(QPHY_FLL_CNT_VAL_L, 0x09), QMP_PHY_INIT_CFG_L(QPHY_FLL_CNT_VAL_H_TOL, 0x42), QMP_PHY_INIT_CFG_L(QPHY_FLL_MAN_CODE, 0x85), /* Lock Det settings */ QMP_PHY_INIT_CFG(QPHY_LOCK_DETECT_CONFIG1, 0xd1), QMP_PHY_INIT_CFG(QPHY_LOCK_DETECT_CONFIG2, 0x1f), QMP_PHY_INIT_CFG(QPHY_LOCK_DETECT_CONFIG3, 0x47), QMP_PHY_INIT_CFG(QPHY_POWER_STATE_CONFIG2, 0x08), }; /* struct qmp_phy_cfg - per-PHY initialization config */ struct qmp_phy_cfg { /* phy-type - PCIE/UFS/USB */ unsigned int type; /* number of lanes provided by phy */ int nlanes; /* Init sequence for PHY blocks - serdes, tx, rx, pcs */ const struct qmp_phy_init_tbl *serdes_tbl; int serdes_tbl_num; const struct qmp_phy_init_tbl *tx_tbl; int tx_tbl_num; const struct qmp_phy_init_tbl *rx_tbl; int rx_tbl_num; const struct qmp_phy_init_tbl *pcs_tbl; int pcs_tbl_num; /* clock ids to be requested */ const char * const *clk_list; int num_clks; /* resets to be requested */ const char * const *reset_list; int num_resets; /* regulators to be requested */ const char * const *vreg_list; int num_vregs; /* array of registers with different offsets */ const unsigned int *regs; unsigned int start_ctrl; unsigned int pwrdn_ctrl; unsigned int mask_pcs_ready; unsigned int mask_com_pcs_ready; /* true, if PHY has a separate PHY_COM control block */ bool has_phy_com_ctrl; /* true, if PHY has a reset for individual lanes */ bool has_lane_rst; /* true, if PHY needs delay after POWER_DOWN */ bool has_pwrdn_delay; /* power_down delay in usec */ int pwrdn_delay_min; int pwrdn_delay_max; }; /** * struct qmp_phy - per-lane phy descriptor * * @phy: generic phy * @tx: iomapped memory space for lane's tx * @rx: iomapped memory space for lane's rx * @pcs: iomapped memory space for lane's pcs * @pipe_clk: pipe lock * @index: lane index * @qmp: QMP phy to which this lane belongs * @lane_rst: lane's reset controller */ struct qmp_phy { struct phy *phy; void __iomem *tx; void __iomem *rx; void __iomem *pcs; struct clk *pipe_clk; unsigned int index; struct qcom_qmp *qmp; struct reset_control *lane_rst; }; /** * struct qcom_qmp - structure holding QMP phy block attributes * * @dev: device * @serdes: iomapped memory space for phy's serdes * * @clks: array of clocks required by phy * @resets: array of resets required by phy * @vregs: regulator supplies bulk data * * @cfg: phy specific configuration * @phys: array of per-lane phy descriptors * @phy_mutex: mutex lock for PHY common block initialization * @init_count: phy common block initialization count */ struct qcom_qmp { struct device *dev; void __iomem *serdes; struct clk **clks; struct reset_control **resets; struct regulator_bulk_data *vregs; const struct qmp_phy_cfg *cfg; struct qmp_phy **phys; struct mutex phy_mutex; int init_count; }; static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val) { u32 reg; reg = readl(base + offset); reg |= val; writel(reg, base + offset); /* ensure that above write is through */ readl(base + offset); } static inline void qphy_clrbits(void __iomem *base, u32 offset, u32 val) { u32 reg; reg = readl(base + offset); reg &= ~val; writel(reg, base + offset); /* ensure that above write is through */ readl(base + offset); } /* list of clocks required by phy */ static const char * const msm8996_phy_clk_l[] = { "aux", "cfg_ahb", "ref", }; /* list of resets */ static const char * const msm8996_pciephy_reset_l[] = { "phy", "common", "cfg", }; static const char * const msm8996_usb3phy_reset_l[] = { "phy", "common", }; /* list of regulators */ static const char * const msm8996_phy_vreg_l[] = { "vdda-phy", "vdda-pll", }; static const struct qmp_phy_cfg msm8996_pciephy_cfg = { .type = PHY_TYPE_PCIE, .nlanes = 3, .serdes_tbl = msm8996_pcie_serdes_tbl, .serdes_tbl_num = ARRAY_SIZE(msm8996_pcie_serdes_tbl), .tx_tbl = msm8996_pcie_tx_tbl, .tx_tbl_num = ARRAY_SIZE(msm8996_pcie_tx_tbl), .rx_tbl = msm8996_pcie_rx_tbl, .rx_tbl_num = ARRAY_SIZE(msm8996_pcie_rx_tbl), .pcs_tbl = msm8996_pcie_pcs_tbl, .pcs_tbl_num = ARRAY_SIZE(msm8996_pcie_pcs_tbl), .clk_list = msm8996_phy_clk_l, .num_clks = ARRAY_SIZE(msm8996_phy_clk_l), .reset_list = msm8996_pciephy_reset_l, .num_resets = ARRAY_SIZE(msm8996_pciephy_reset_l), .vreg_list = msm8996_phy_vreg_l, .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l), .regs = pciephy_regs_layout, .start_ctrl = PCS_START | PLL_READY_GATE_EN, .pwrdn_ctrl = SW_PWRDN | REFCLK_DRV_DSBL, .mask_com_pcs_ready = PCS_READY, .has_phy_com_ctrl = true, .has_lane_rst = true, .has_pwrdn_delay = true, .pwrdn_delay_min = POWER_DOWN_DELAY_US_MIN, .pwrdn_delay_max = POWER_DOWN_DELAY_US_MAX, }; static const struct qmp_phy_cfg msm8996_usb3phy_cfg = { .type = PHY_TYPE_USB3, .nlanes = 1, .serdes_tbl = msm8996_usb3_serdes_tbl, .serdes_tbl_num = ARRAY_SIZE(msm8996_usb3_serdes_tbl), .tx_tbl = msm8996_usb3_tx_tbl, .tx_tbl_num = ARRAY_SIZE(msm8996_usb3_tx_tbl), .rx_tbl = msm8996_usb3_rx_tbl, .rx_tbl_num = ARRAY_SIZE(msm8996_usb3_rx_tbl), .pcs_tbl = msm8996_usb3_pcs_tbl, .pcs_tbl_num = ARRAY_SIZE(msm8996_usb3_pcs_tbl), .clk_list = msm8996_phy_clk_l, .num_clks = ARRAY_SIZE(msm8996_phy_clk_l), .reset_list = msm8996_usb3phy_reset_l, .num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l), .vreg_list = msm8996_phy_vreg_l, .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l), .regs = usb3phy_regs_layout, .start_ctrl = SERDES_START | PCS_START, .pwrdn_ctrl = SW_PWRDN, .mask_pcs_ready = PHYSTATUS, }; static void qcom_qmp_phy_configure(void __iomem *base, const unsigned int *regs, const struct qmp_phy_init_tbl tbl[], int num) { int i; const struct qmp_phy_init_tbl *t = tbl; if (!t) return; for (i = 0; i < num; i++, t++) { if (t->in_layout) writel(t->val, base + regs[t->offset]); else writel(t->val, base + t->offset); } } static int qcom_qmp_phy_poweron(struct phy *phy) { struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; int num = qmp->cfg->num_vregs; int ret; dev_vdbg(&phy->dev, "Powering on QMP phy\n"); /* turn on regulator supplies */ ret = regulator_bulk_enable(num, qmp->vregs); if (ret) { dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret); return ret; } ret = clk_prepare_enable(qphy->pipe_clk); if (ret) { dev_err(qmp->dev, "pipe_clk enable failed, err=%d\n", ret); regulator_bulk_disable(num, qmp->vregs); return ret; } return 0; } static int qcom_qmp_phy_poweroff(struct phy *phy) { struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; clk_disable_unprepare(qphy->pipe_clk); regulator_bulk_disable(qmp->cfg->num_vregs, qmp->vregs); return 0; } static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) { const struct qmp_phy_cfg *cfg = qmp->cfg; void __iomem *serdes = qmp->serdes; int ret, i; mutex_lock(&qmp->phy_mutex); if (qmp->init_count++) { mutex_unlock(&qmp->phy_mutex); return 0; } for (i = 0; i < cfg->num_resets; i++) { ret = reset_control_deassert(qmp->resets[i]); if (ret) { dev_err(qmp->dev, "%s reset deassert failed\n", qmp->cfg->reset_list[i]); while (--i >= 0) reset_control_assert(qmp->resets[i]); goto err_rst; } } if (cfg->has_phy_com_ctrl) qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL], SW_PWRDN); /* Serdes configuration */ qcom_qmp_phy_configure(serdes, cfg->regs, cfg->serdes_tbl, cfg->serdes_tbl_num); if (cfg->has_phy_com_ctrl) { void __iomem *status; unsigned int mask, val; qphy_clrbits(serdes, cfg->regs[QPHY_COM_SW_RESET], SW_RESET); qphy_setbits(serdes, cfg->regs[QPHY_COM_START_CONTROL], SERDES_START | PCS_START); status = serdes + cfg->regs[QPHY_COM_PCS_READY_STATUS]; mask = cfg->mask_com_pcs_ready; ret = readl_poll_timeout(status, val, (val & mask), 10, PHY_INIT_COMPLETE_TIMEOUT); if (ret) { dev_err(qmp->dev, "phy common block init timed-out\n"); goto err_com_init; } } mutex_unlock(&qmp->phy_mutex); return 0; err_com_init: while (--i >= 0) reset_control_assert(qmp->resets[i]); err_rst: mutex_unlock(&qmp->phy_mutex); return ret; } static int qcom_qmp_phy_com_exit(struct qcom_qmp *qmp) { const struct qmp_phy_cfg *cfg = qmp->cfg; void __iomem *serdes = qmp->serdes; int i = cfg->num_resets; mutex_lock(&qmp->phy_mutex); if (--qmp->init_count) { mutex_unlock(&qmp->phy_mutex); return 0; } if (cfg->has_phy_com_ctrl) { qphy_setbits(serdes, cfg->regs[QPHY_COM_START_CONTROL], SERDES_START | PCS_START); qphy_clrbits(serdes, cfg->regs[QPHY_COM_SW_RESET], SW_RESET); qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL], SW_PWRDN); } while (--i >= 0) reset_control_assert(qmp->resets[i]); mutex_unlock(&qmp->phy_mutex); return 0; } /* PHY Initialization */ static int qcom_qmp_phy_init(struct phy *phy) { struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; const struct qmp_phy_cfg *cfg = qmp->cfg; void __iomem *tx = qphy->tx; void __iomem *rx = qphy->rx; void __iomem *pcs = qphy->pcs; void __iomem *status; unsigned int mask, val; int ret, i; dev_vdbg(qmp->dev, "Initializing QMP phy\n"); for (i = 0; i < qmp->cfg->num_clks; i++) { ret = clk_prepare_enable(qmp->clks[i]); if (ret) { dev_err(qmp->dev, "failed to enable %s clk, err=%d\n", qmp->cfg->clk_list[i], ret); while (--i >= 0) clk_disable_unprepare(qmp->clks[i]); } } ret = qcom_qmp_phy_com_init(qmp); if (ret) goto err_com_init; if (cfg->has_lane_rst) { ret = reset_control_deassert(qphy->lane_rst); if (ret) { dev_err(qmp->dev, "lane%d reset deassert failed\n", qphy->index); goto err_lane_rst; } } /* Tx, Rx, and PCS configurations */ qcom_qmp_phy_configure(tx, cfg->regs, cfg->tx_tbl, cfg->tx_tbl_num); qcom_qmp_phy_configure(rx, cfg->regs, cfg->rx_tbl, cfg->rx_tbl_num); qcom_qmp_phy_configure(pcs, cfg->regs, cfg->pcs_tbl, cfg->pcs_tbl_num); /* * Pull out PHY from POWER DOWN state. * This is active low enable signal to power-down PHY. */ qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl); if (cfg->has_pwrdn_delay) usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max); /* start SerDes and Phy-Coding-Sublayer */ qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); /* Pull PHY out of reset state */ qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); status = pcs + cfg->regs[QPHY_PCS_READY_STATUS]; mask = cfg->mask_pcs_ready; ret = readl_poll_timeout(status, val, !(val & mask), 1, PHY_INIT_COMPLETE_TIMEOUT); if (ret) { dev_err(qmp->dev, "phy initialization timed-out\n"); goto err_pcs_ready; } return ret; err_pcs_ready: if (cfg->has_lane_rst) reset_control_assert(qphy->lane_rst); err_lane_rst: qcom_qmp_phy_com_exit(qmp); err_com_init: while (--i >= 0) clk_disable_unprepare(qmp->clks[i]); return ret; } static int qcom_qmp_phy_exit(struct phy *phy) { struct qmp_phy *qphy = phy_get_drvdata(phy); struct qcom_qmp *qmp = qphy->qmp; const struct qmp_phy_cfg *cfg = qmp->cfg; int i = cfg->num_clks; /* PHY reset */ qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); /* stop SerDes and Phy-Coding-Sublayer */ qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); /* Put PHY into POWER DOWN state: active low */ qphy_clrbits(qphy->pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl); if (cfg->has_lane_rst) reset_control_assert(qphy->lane_rst); qcom_qmp_phy_com_exit(qmp); while (--i >= 0) clk_disable_unprepare(qmp->clks[i]); return 0; } static int qcom_qmp_phy_vreg_init(struct device *dev) { struct qcom_qmp *qmp = dev_get_drvdata(dev); int num = qmp->cfg->num_vregs; int i; qmp->vregs = devm_kcalloc(dev, num, sizeof(qmp->vregs), GFP_KERNEL); if (!qmp->vregs) return -ENOMEM; for (i = 0; i < num; i++) qmp->vregs[i].supply = qmp->cfg->vreg_list[i]; return devm_regulator_bulk_get(dev, num, qmp->vregs); } static int qcom_qmp_phy_reset_init(struct device *dev) { struct qcom_qmp *qmp = dev_get_drvdata(dev); int i; qmp->resets = devm_kcalloc(dev, qmp->cfg->num_resets, sizeof(*qmp->resets), GFP_KERNEL); if (!qmp->resets) return -ENOMEM; for (i = 0; i < qmp->cfg->num_resets; i++) { struct reset_control *rst; const char *name = qmp->cfg->reset_list[i]; rst = devm_reset_control_get(dev, name); if (IS_ERR(rst)) { dev_err(dev, "failed to get %s reset\n", name); return PTR_ERR(rst); } qmp->resets[i] = rst; } return 0; } static int qcom_qmp_phy_clk_init(struct device *dev) { struct qcom_qmp *qmp = dev_get_drvdata(dev); int ret, i; qmp->clks = devm_kcalloc(dev, qmp->cfg->num_clks, sizeof(*qmp->clks), GFP_KERNEL); if (!qmp->clks) return -ENOMEM; for (i = 0; i < qmp->cfg->num_clks; i++) { struct clk *_clk; const char *name = qmp->cfg->clk_list[i]; _clk = devm_clk_get(dev, name); if (IS_ERR(_clk)) { ret = PTR_ERR(_clk); if (ret != -EPROBE_DEFER) dev_err(dev, "failed to get %s clk, %d\n", name, ret); return ret; } qmp->clks[i] = _clk; } return 0; } /* * Register a fixed rate pipe clock. * * The _pipe_clksrc generated by PHY goes to the GCC that gate * controls it. The _pipe_clk coming out of the GCC is requested * by the PHY driver for its operations. * We register the _pipe_clksrc here. The gcc driver takes care * of assigning this _pipe_clksrc as parent to _pipe_clk. * Below picture shows this relationship. * * +---------------+ * | PHY block |<<---------------------------------------+ * | | | * | +-------+ | +-----+ | * I/P---^-->| PLL |---^--->pipe_clksrc--->| GCC |--->pipe_clk---+ * clk | +-------+ | +-----+ * +---------------+ */ static int phy_pipe_clk_register(struct qcom_qmp *qmp, int id) { char name[24]; struct clk_fixed_rate *fixed; struct clk_init_data init = { }; switch (qmp->cfg->type) { case PHY_TYPE_USB3: snprintf(name, sizeof(name), "usb3_phy_pipe_clk_src"); break; case PHY_TYPE_PCIE: snprintf(name, sizeof(name), "pcie_%d_pipe_clk_src", id); break; default: /* not all phys register pipe clocks, so return success */ return 0; } fixed = devm_kzalloc(qmp->dev, sizeof(*fixed), GFP_KERNEL); if (!fixed) return -ENOMEM; init.name = name; init.ops = &clk_fixed_rate_ops; /* controllers using QMP phys use 125MHz pipe clock interface */ fixed->fixed_rate = 125000000; fixed->hw.init = &init; return devm_clk_hw_register(qmp->dev, &fixed->hw); } static const struct phy_ops qcom_qmp_phy_gen_ops = { .init = qcom_qmp_phy_init, .exit = qcom_qmp_phy_exit, .power_on = qcom_qmp_phy_poweron, .power_off = qcom_qmp_phy_poweroff, .owner = THIS_MODULE, }; static int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id) { struct qcom_qmp *qmp = dev_get_drvdata(dev); struct phy *generic_phy; struct qmp_phy *qphy; char prop_name[MAX_PROP_NAME]; int ret; qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL); if (!qphy) return -ENOMEM; /* * Get memory resources for each phy lane: * Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2. */ qphy->tx = of_iomap(np, 0); if (IS_ERR(qphy->tx)) return PTR_ERR(qphy->tx); qphy->rx = of_iomap(np, 1); if (IS_ERR(qphy->rx)) return PTR_ERR(qphy->rx); qphy->pcs = of_iomap(np, 2); if (IS_ERR(qphy->pcs)) return PTR_ERR(qphy->pcs); /* * Get PHY's Pipe clock, if any. USB3 and PCIe are PIPE3 * based phys, so they essentially have pipe clock. So, * we return error in case phy is USB3 or PIPE type. * Otherwise, we initialize pipe clock to NULL for * all phys that don't need this. */ snprintf(prop_name, sizeof(prop_name), "pipe%d", id); qphy->pipe_clk = of_clk_get_by_name(np, prop_name); if (IS_ERR(qphy->pipe_clk)) { if (qmp->cfg->type == PHY_TYPE_PCIE || qmp->cfg->type == PHY_TYPE_USB3) { ret = PTR_ERR(qphy->pipe_clk); if (ret != -EPROBE_DEFER) dev_err(dev, "failed to get lane%d pipe_clk, %d\n", id, ret); return ret; } qphy->pipe_clk = NULL; } /* Get lane reset, if any */ if (qmp->cfg->has_lane_rst) { snprintf(prop_name, sizeof(prop_name), "lane%d", id); qphy->lane_rst = of_reset_control_get(np, prop_name); if (IS_ERR(qphy->lane_rst)) { dev_err(dev, "failed to get lane%d reset\n", id); return PTR_ERR(qphy->lane_rst); } } generic_phy = devm_phy_create(dev, np, &qcom_qmp_phy_gen_ops); if (IS_ERR(generic_phy)) { ret = PTR_ERR(generic_phy); dev_err(dev, "failed to create qphy %d\n", ret); return ret; } qphy->phy = generic_phy; qphy->index = id; qphy->qmp = qmp; qmp->phys[id] = qphy; phy_set_drvdata(generic_phy, qphy); return 0; } static const struct of_device_id qcom_qmp_phy_of_match_table[] = { { .compatible = "qcom,msm8996-qmp-pcie-phy", .data = &msm8996_pciephy_cfg, }, { .compatible = "qcom,msm8996-qmp-usb3-phy", .data = &msm8996_usb3phy_cfg, }, { }, }; MODULE_DEVICE_TABLE(of, qcom_qmp_phy_of_match_table); static int qcom_qmp_phy_probe(struct platform_device *pdev) { struct qcom_qmp *qmp; struct device *dev = &pdev->dev; struct resource *res; struct device_node *child; struct phy_provider *phy_provider; void __iomem *base; int num, id; int ret; qmp = devm_kzalloc(dev, sizeof(*qmp), GFP_KERNEL); if (!qmp) return -ENOMEM; qmp->dev = dev; dev_set_drvdata(dev, qmp); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(dev, res); if (IS_ERR(base)) return PTR_ERR(base); /* per PHY serdes; usually located at base address */ qmp->serdes = base; mutex_init(&qmp->phy_mutex); /* Get the specific init parameters of QMP phy */ qmp->cfg = of_device_get_match_data(dev); ret = qcom_qmp_phy_clk_init(dev); if (ret) return ret; ret = qcom_qmp_phy_reset_init(dev); if (ret) return ret; ret = qcom_qmp_phy_vreg_init(dev); if (ret) { dev_err(dev, "failed to get regulator supplies\n"); return ret; } num = of_get_available_child_count(dev->of_node); /* do we have a rogue child node ? */ if (num > qmp->cfg->nlanes) return -EINVAL; qmp->phys = devm_kcalloc(dev, num, sizeof(*qmp->phys), GFP_KERNEL); if (!qmp->phys) return -ENOMEM; id = 0; for_each_available_child_of_node(dev->of_node, child) { /* Create per-lane phy */ ret = qcom_qmp_phy_create(dev, child, id); if (ret) { dev_err(dev, "failed to create lane%d phy, %d\n", id, ret); return ret; } /* * Register the pipe clock provided by phy. * See function description to see details of this pipe clock. */ ret = phy_pipe_clk_register(qmp, id); if (ret) { dev_err(qmp->dev, "failed to register pipe clock source\n"); return ret; } id++; } phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (!IS_ERR(phy_provider)) dev_info(dev, "Registered Qcom-QMP phy\n"); return PTR_ERR_OR_ZERO(phy_provider); } static struct platform_driver qcom_qmp_phy_driver = { .probe = qcom_qmp_phy_probe, .driver = { .name = "qcom-qmp-phy", .of_match_table = qcom_qmp_phy_of_match_table, }, }; module_platform_driver(qcom_qmp_phy_driver); MODULE_AUTHOR("Vivek Gautam "); MODULE_DESCRIPTION("Qualcomm QMP PHY driver"); MODULE_LICENSE("GPL v2");