kevin/linux
1
Fork 0
Code
c289f4de8e
linux/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c
Dmitry Baryshkov 25ee21fc97 phy: qcom: sgmii-eth: move PCS registers to separate header 
Follow the example of the rest of the QMP PHY drivers and move SGMII PCS
registers to a separate header file.

Cc: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240126-phy-qmp-merge-common-v2-8-a463d0b57836@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2024-01-30 22:35:39 +05:30

373 lines
16 KiB
C
Raw Blame History

// 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");
View Git Blame Copy Permalink