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    Subject[PATCH v4 3/6] phy: samsung-ufs: add support for FSD ufs phy driver
    Date
    Adds support for Tesla Full Self-Driving (FSD) ufs phy driver.
    This SoC has different cdr lock status offset.

    Signed-off-by: Bharat Uppal <bharat.uppal@samsung.com>
    Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
    Reviewed-by: Chanho Park <chanho61.park@samsung.com>
    ---
    drivers/phy/samsung/Makefile | 1 +
    drivers/phy/samsung/phy-fsd-ufs.c | 58 +++++++++++++++++++++++++++
    drivers/phy/samsung/phy-samsung-ufs.c | 3 ++
    drivers/phy/samsung/phy-samsung-ufs.h | 1 +
    4 files changed, 63 insertions(+)
    create mode 100644 drivers/phy/samsung/phy-fsd-ufs.c

    diff --git a/drivers/phy/samsung/Makefile b/drivers/phy/samsung/Makefile
    index 65e4cc59403f..afb34a153e34 100644
    --- a/drivers/phy/samsung/Makefile
    +++ b/drivers/phy/samsung/Makefile
    @@ -6,6 +6,7 @@ obj-$(CONFIG_PHY_SAMSUNG_UFS) += phy-exynos-ufs.o
    phy-exynos-ufs-y += phy-samsung-ufs.o
    phy-exynos-ufs-y += phy-exynos7-ufs.o
    phy-exynos-ufs-y += phy-exynosautov9-ufs.o
    +phy-exynos-ufs-y += phy-fsd-ufs.o
    obj-$(CONFIG_PHY_SAMSUNG_USB2) += phy-exynos-usb2.o
    phy-exynos-usb2-y += phy-samsung-usb2.o
    phy-exynos-usb2-$(CONFIG_PHY_EXYNOS4210_USB2) += phy-exynos4210-usb2.o
    diff --git a/drivers/phy/samsung/phy-fsd-ufs.c b/drivers/phy/samsung/phy-fsd-ufs.c
    new file mode 100644
    index 000000000000..c78b6c16027d
    --- /dev/null
    +++ b/drivers/phy/samsung/phy-fsd-ufs.c
    @@ -0,0 +1,58 @@
    +// SPDX-License-Identifier: GPL-2.0-only
    +/*
    + * UFS PHY driver data for FSD SoC
    + *
    + * Copyright (C) 2022 Samsung Electronics Co., Ltd.
    + *
    + */
    +#include "phy-samsung-ufs.h"
    +
    +#define FSD_EMBEDDED_COMBO_PHY_CTRL 0x724
    +#define FSD_EMBEDDED_COMBO_PHY_CTRL_MASK 0x1
    +#define FSD_EMBEDDED_COMBO_PHY_CTRL_EN BIT(0)
    +#define FSD_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS 0x6e
    +
    +static const struct samsung_ufs_phy_cfg fsd_pre_init_cfg[] = {
    + PHY_COMN_REG_CFG(0x00f, 0xfa, PWR_MODE_ANY),
    + PHY_COMN_REG_CFG(0x010, 0x82, PWR_MODE_ANY),
    + PHY_COMN_REG_CFG(0x011, 0x1e, PWR_MODE_ANY),
    + PHY_COMN_REG_CFG(0x017, 0x94, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x035, 0x58, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x036, 0x32, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x037, 0x40, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x03b, 0x83, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x042, 0x88, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x043, 0xa6, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x048, 0x74, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x04c, 0x5b, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x04d, 0x83, PWR_MODE_ANY),
    + PHY_TRSV_REG_CFG(0x05c, 0x14, PWR_MODE_ANY),
    + END_UFS_PHY_CFG
    +};
    +
    +/* Calibration for HS mode series A/B */
    +static const struct samsung_ufs_phy_cfg fsd_pre_pwr_hs_cfg[] = {
    + END_UFS_PHY_CFG
    +};
    +
    +/* Calibration for HS mode series A/B atfer PMC */
    +static const struct samsung_ufs_phy_cfg fsd_post_pwr_hs_cfg[] = {
    + END_UFS_PHY_CFG
    +};
    +
    +static const struct samsung_ufs_phy_cfg *fsd_ufs_phy_cfgs[CFG_TAG_MAX] = {
    + [CFG_PRE_INIT] = fsd_pre_init_cfg,
    + [CFG_PRE_PWR_HS] = fsd_pre_pwr_hs_cfg,
    + [CFG_POST_PWR_HS] = fsd_post_pwr_hs_cfg,
    +};
    +
    +const struct samsung_ufs_phy_drvdata fsd_ufs_phy = {
    + .cfgs = fsd_ufs_phy_cfgs,
    + .isol = {
    + .offset = FSD_EMBEDDED_COMBO_PHY_CTRL,
    + .mask = FSD_EMBEDDED_COMBO_PHY_CTRL_MASK,
    + .en = FSD_EMBEDDED_COMBO_PHY_CTRL_EN,
    + },
    + .has_symbol_clk = 0,
    + .cdr_lock_status_offset = FSD_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS,
    +};
    diff --git a/drivers/phy/samsung/phy-samsung-ufs.c b/drivers/phy/samsung/phy-samsung-ufs.c
    index 8cec7652b459..e4334529ffbc 100644
    --- a/drivers/phy/samsung/phy-samsung-ufs.c
    +++ b/drivers/phy/samsung/phy-samsung-ufs.c
    @@ -358,6 +358,9 @@ static const struct of_device_id samsung_ufs_phy_match[] = {
    }, {
    .compatible = "samsung,exynosautov9-ufs-phy",
    .data = &exynosautov9_ufs_phy,
    + }, {
    + .compatible = "tesla,fsd-ufs-phy",
    + .data = &fsd_ufs_phy,
    },
    {},
    };
    diff --git a/drivers/phy/samsung/phy-samsung-ufs.h b/drivers/phy/samsung/phy-samsung-ufs.h
    index 913542ebff7a..6320ac852f29 100644
    --- a/drivers/phy/samsung/phy-samsung-ufs.h
    +++ b/drivers/phy/samsung/phy-samsung-ufs.h
    @@ -145,5 +145,6 @@ static inline void samsung_ufs_phy_ctrl_isol(

    extern const struct samsung_ufs_phy_drvdata exynos7_ufs_phy;
    extern const struct samsung_ufs_phy_drvdata exynosautov9_ufs_phy;
    +extern const struct samsung_ufs_phy_drvdata fsd_ufs_phy;

    #endif /* _PHY_SAMSUNG_UFS_ */
    --
    2.25.1
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