diff options
Diffstat (limited to 'drivers/phy/qualcomm/phy-qcom-sgmii-eth.c')
| -rw-r--r-- | drivers/phy/qualcomm/phy-qcom-sgmii-eth.c | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c b/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c new file mode 100644 index 000000000000..5b1c82459c12 --- /dev/null +++ b/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c @@ -0,0 +1,372 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023, Linaro Limited + */ + +#include <linux/clk.h> +#include <linux/ethtool.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +#include "phy-qcom-qmp-pcs-sgmii.h" +#include "phy-qcom-qmp-qserdes-com-v5.h" +#include "phy-qcom-qmp-qserdes-txrx-v5.h" + +#define QSERDES_QMP_PLL 0x0 +#define QSERDES_RX 0x600 +#define QSERDES_TX 0x400 +#define QSERDES_PCS 0xc00 + +#define QSERDES_COM_C_READY BIT(0) +#define QSERDES_PCS_READY BIT(0) +#define QSERDES_PCS_SGMIIPHY_READY BIT(7) +#define QSERDES_COM_C_PLL_LOCKED BIT(1) + +struct qcom_dwmac_sgmii_phy_data { + struct regmap *regmap; + struct clk *refclk; + int speed; +}; + +static void qcom_dwmac_sgmii_phy_init_1g(struct regmap *regmap) +{ + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_SW_RESET, 0x01); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_POWER_DOWN_CONTROL, 0x01); + + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_PLL_IVCO, 0x0F); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_CP_CTRL_MODE0, 0x06); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_PLL_RCTRL_MODE0, 0x16); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_PLL_CCTRL_MODE0, 0x36); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_SYSCLK_EN_SEL, 0x1A); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_LOCK_CMP1_MODE0, 0x0A); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_LOCK_CMP2_MODE0, 0x1A); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_DEC_START_MODE0, 0x82); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_DIV_FRAC_START1_MODE0, 0x55); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_DIV_FRAC_START2_MODE0, 0x55); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_DIV_FRAC_START3_MODE0, 0x03); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_VCO_TUNE1_MODE0, 0x24); + + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_VCO_TUNE2_MODE0, 0x02); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_VCO_TUNE_INITVAL2, 0x00); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_HSCLK_SEL, 0x04); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_HSCLK_HS_SWITCH_SEL, 0x00); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_CORECLK_DIV_MODE0, 0x0A); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_CORE_CLK_EN, 0x00); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE1_MODE0, 0xB9); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE2_MODE0, 0x1E); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_BIN_VCOCAL_HSCLK_SEL, 0x11); + + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_TX_BAND, 0x05); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_SLEW_CNTL, 0x0A); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_RES_CODE_LANE_OFFSET_TX, 0x09); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_RES_CODE_LANE_OFFSET_RX, 0x09); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_LANE_MODE_1, 0x05); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_LANE_MODE_3, 0x00); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_RCV_DETECT_LVL_2, 0x12); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_TRAN_DRVR_EMP_EN, 0x0C); + + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_FO_GAIN, 0x0A); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_SO_GAIN, 0x06); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_FASTLOCK_FO_GAIN, 0x0A); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x7F); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_FASTLOCK_COUNT_LOW, 0x00); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_FASTLOCK_COUNT_HIGH, 0x01); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_PI_CONTROLS, 0x81); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_PI_CTRL2, 0x80); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_TERM_BW, 0x04); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_VGA_CAL_CNTRL2, 0x08); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_GM_CAL, 0x0F); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL1, 0x04); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL2, 0x00); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4A); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL4, 0x0A); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_IDAC_TSETTLE_LOW, 0x80); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_IDAC_TSETTLE_HIGH, 0x01); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_IDAC_MEASURE_TIME, 0x20); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x17); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x00); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_SIGDET_CNTRL, 0x0F); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_SIGDET_DEGLITCH_CNTRL, 0x1E); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_BAND, 0x05); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_HIGH3, 0x09); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_HIGH4, 0xB1); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_HIGH3, 0x09); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_HIGH4, 0xB1); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_HIGH3, 0x3B); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_HIGH4, 0xB7); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_DCC_CTRL1, 0x0C); + + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_LINE_RESET_TIME, 0x0C); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_TX_LARGE_AMP_DRV_LVL, 0x1F); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_TX_SMALL_AMP_DRV_LVL, 0x03); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_TX_MID_TERM_CTRL1, 0x83); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_TX_MID_TERM_CTRL2, 0x08); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_SGMII_MISC_CTRL8, 0x0C); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_SW_RESET, 0x00); + + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_PHY_START, 0x01); +} + +static void qcom_dwmac_sgmii_phy_init_2p5g(struct regmap *regmap) +{ + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_SW_RESET, 0x01); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_POWER_DOWN_CONTROL, 0x01); + + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_PLL_IVCO, 0x0F); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_CP_CTRL_MODE0, 0x06); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_PLL_RCTRL_MODE0, 0x16); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_PLL_CCTRL_MODE0, 0x36); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_SYSCLK_EN_SEL, 0x1A); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_LOCK_CMP1_MODE0, 0x1A); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_LOCK_CMP2_MODE0, 0x41); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_DEC_START_MODE0, 0x7A); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_DIV_FRAC_START1_MODE0, 0x00); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_DIV_FRAC_START2_MODE0, 0x20); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_DIV_FRAC_START3_MODE0, 0x01); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_VCO_TUNE1_MODE0, 0xA1); + + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_VCO_TUNE2_MODE0, 0x02); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_VCO_TUNE_INITVAL2, 0x00); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_HSCLK_SEL, 0x03); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_HSCLK_HS_SWITCH_SEL, 0x00); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_CORECLK_DIV_MODE0, 0x05); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_CORE_CLK_EN, 0x00); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE1_MODE0, 0xCD); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE2_MODE0, 0x1C); + regmap_write(regmap, QSERDES_QMP_PLL + QSERDES_V5_COM_BIN_VCOCAL_HSCLK_SEL, 0x11); + + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_TX_BAND, 0x04); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_SLEW_CNTL, 0x0A); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_RES_CODE_LANE_OFFSET_TX, 0x09); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_RES_CODE_LANE_OFFSET_RX, 0x02); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_LANE_MODE_1, 0x05); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_LANE_MODE_3, 0x00); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_RCV_DETECT_LVL_2, 0x12); + regmap_write(regmap, QSERDES_TX + QSERDES_V5_TX_TRAN_DRVR_EMP_EN, 0x0C); + + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_FO_GAIN, 0x0A); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_SO_GAIN, 0x06); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_FASTLOCK_FO_GAIN, 0x0A); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x7F); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_FASTLOCK_COUNT_LOW, 0x00); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_FASTLOCK_COUNT_HIGH, 0x01); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_PI_CONTROLS, 0x81); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_UCDR_PI_CTRL2, 0x80); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_TERM_BW, 0x00); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_VGA_CAL_CNTRL2, 0x08); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_GM_CAL, 0x0F); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL1, 0x04); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL2, 0x00); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4A); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL4, 0x0A); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_IDAC_TSETTLE_LOW, 0x80); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_IDAC_TSETTLE_HIGH, 0x01); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_IDAC_MEASURE_TIME, 0x20); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x17); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x00); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_SIGDET_CNTRL, 0x0F); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_SIGDET_DEGLITCH_CNTRL, 0x1E); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_BAND, 0x18); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_LOW, 0x18); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_HIGH3, 0x0C); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_00_HIGH4, 0xB8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_HIGH3, 0x09); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_01_HIGH4, 0xB1); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_HIGH3, 0x3B); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_RX_MODE_10_HIGH4, 0xB7); + regmap_write(regmap, QSERDES_RX + QSERDES_V5_RX_DCC_CTRL1, 0x0C); + + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_LINE_RESET_TIME, 0x0C); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_TX_LARGE_AMP_DRV_LVL, 0x1F); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_TX_SMALL_AMP_DRV_LVL, 0x03); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_TX_MID_TERM_CTRL1, 0x83); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_TX_MID_TERM_CTRL2, 0x08); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_SGMII_MISC_CTRL8, 0x8C); + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_SW_RESET, 0x00); + + regmap_write(regmap, QSERDES_PCS + QPHY_PCS_PHY_START, 0x01); +} + +static inline int +qcom_dwmac_sgmii_phy_poll_status(struct regmap *regmap, unsigned int reg, + unsigned int bit) +{ + unsigned int val; + + return regmap_read_poll_timeout(regmap, reg, val, + val & bit, 1500, 750000); +} + +static int qcom_dwmac_sgmii_phy_calibrate(struct phy *phy) +{ + struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy); + struct device *dev = phy->dev.parent; + + switch (data->speed) { + case SPEED_10: + case SPEED_100: + case SPEED_1000: + qcom_dwmac_sgmii_phy_init_1g(data->regmap); + break; + case SPEED_2500: + qcom_dwmac_sgmii_phy_init_2p5g(data->regmap); + break; + } + + if (qcom_dwmac_sgmii_phy_poll_status(data->regmap, + QSERDES_QMP_PLL + QSERDES_V5_COM_C_READY_STATUS, + QSERDES_COM_C_READY)) { + dev_err(dev, "QSERDES_COM_C_READY_STATUS timed-out"); + return -ETIMEDOUT; + } + + if (qcom_dwmac_sgmii_phy_poll_status(data->regmap, + QSERDES_PCS + QPHY_PCS_PCS_READY_STATUS, + QSERDES_PCS_READY)) { + dev_err(dev, "PCS_READY timed-out"); + return -ETIMEDOUT; + } + + if (qcom_dwmac_sgmii_phy_poll_status(data->regmap, + QSERDES_PCS + QPHY_PCS_PCS_READY_STATUS, + QSERDES_PCS_SGMIIPHY_READY)) { + dev_err(dev, "SGMIIPHY_READY timed-out"); + return -ETIMEDOUT; + } + + if (qcom_dwmac_sgmii_phy_poll_status(data->regmap, + QSERDES_QMP_PLL + QSERDES_V5_COM_CMN_STATUS, + QSERDES_COM_C_PLL_LOCKED)) { + dev_err(dev, "PLL Lock Status timed-out"); + return -ETIMEDOUT; + } + + return 0; +} + +static int qcom_dwmac_sgmii_phy_power_on(struct phy *phy) +{ + struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy); + + return clk_prepare_enable(data->refclk); +} + +static int qcom_dwmac_sgmii_phy_power_off(struct phy *phy) +{ + struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy); + + regmap_write(data->regmap, QSERDES_PCS + QPHY_PCS_TX_MID_TERM_CTRL2, 0x08); + regmap_write(data->regmap, QSERDES_PCS + QPHY_PCS_SW_RESET, 0x01); + udelay(100); + regmap_write(data->regmap, QSERDES_PCS + QPHY_PCS_SW_RESET, 0x00); + regmap_write(data->regmap, QSERDES_PCS + QPHY_PCS_PHY_START, 0x01); + + clk_disable_unprepare(data->refclk); + + return 0; +} + +static int qcom_dwmac_sgmii_phy_set_speed(struct phy *phy, int speed) +{ + struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy); + + if (speed != data->speed) + data->speed = speed; + + return qcom_dwmac_sgmii_phy_calibrate(phy); +} + +static const struct phy_ops qcom_dwmac_sgmii_phy_ops = { + .power_on = qcom_dwmac_sgmii_phy_power_on, + .power_off = qcom_dwmac_sgmii_phy_power_off, + .set_speed = qcom_dwmac_sgmii_phy_set_speed, + .calibrate = qcom_dwmac_sgmii_phy_calibrate, + .owner = THIS_MODULE, +}; + +static const struct regmap_config qcom_dwmac_sgmii_phy_regmap_cfg = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .use_relaxed_mmio = true, + .disable_locking = true, +}; + +static int qcom_dwmac_sgmii_phy_probe(struct platform_device *pdev) +{ + struct qcom_dwmac_sgmii_phy_data *data; + struct device *dev = &pdev->dev; + struct phy_provider *provider; + void __iomem *base; + struct phy *phy; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->speed = SPEED_10; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + data->regmap = devm_regmap_init_mmio(dev, base, + &qcom_dwmac_sgmii_phy_regmap_cfg); + if (IS_ERR(data->regmap)) + return PTR_ERR(data->regmap); + + phy = devm_phy_create(dev, NULL, &qcom_dwmac_sgmii_phy_ops); + if (IS_ERR(phy)) + return PTR_ERR(phy); + + data->refclk = devm_clk_get(dev, "sgmi_ref"); + if (IS_ERR(data->refclk)) + return PTR_ERR(data->refclk); + + provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + if (IS_ERR(provider)) + return PTR_ERR(provider); + + phy_set_drvdata(phy, data); + + return 0; +} + +static const struct of_device_id qcom_dwmac_sgmii_phy_of_match[] = { + { .compatible = "qcom,sa8775p-dwmac-sgmii-phy" }, + { }, +}; +MODULE_DEVICE_TABLE(of, qcom_dwmac_sgmii_phy_of_match); + +static struct platform_driver qcom_dwmac_sgmii_phy_driver = { + .probe = qcom_dwmac_sgmii_phy_probe, + .driver = { + .name = "qcom-dwmac-sgmii-phy", + .of_match_table = qcom_dwmac_sgmii_phy_of_match, + } +}; + +module_platform_driver(qcom_dwmac_sgmii_phy_driver); + +MODULE_DESCRIPTION("Qualcomm DWMAC SGMII PHY driver"); +MODULE_LICENSE("GPL"); |