| Message ID | 20241111043306.1250488-3-sowon.na@samsung.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Support ExynosAutov920 ufs phy driver | expand |
> -----Original Message----- > From: Sowon Na <sowon.na@samsung.com> > Sent: Monday, November 11, 2024 10:03 AM > To: robh@kernel.org; krzk@kernel.org; conor+dt@kernel.org; > vkoul@kernel.org; alim.akhtar@samsung.com; kishon@kernel.org > Cc: krzk+dt@kernel.org; linux-kernel@vger.kernel.org; > devicetree@vger.kernel.org; linux-samsung-soc@vger.kernel.org; > sowon.na@samsung.com > Subject: [PATCH v2 2/3] phy: samsung-ufs: support ExynosAutov920 ufs phy > driver > > Add support for ExynosAutov920 ufs phy driver. > > Signed-off-by: Sowon Na <sowon.na@samsung.com> > --- > drivers/phy/samsung/Makefile | 1 + > drivers/phy/samsung/phy-exynosautov920-ufs.c | 170 +++++++++++++++++++ > drivers/phy/samsung/phy-samsung-ufs.c | 9 +- > drivers/phy/samsung/phy-samsung-ufs.h | 4 + > 4 files changed, 181 insertions(+), 3 deletions(-) create mode 100644 > drivers/phy/samsung/phy-exynosautov920-ufs.c > > diff --git a/drivers/phy/samsung/Makefile b/drivers/phy/samsung/Makefile > index fea1f96d0e43..342682638a87 100644 > --- a/drivers/phy/samsung/Makefile > +++ b/drivers/phy/samsung/Makefile > @@ -7,6 +7,7 @@ phy-exynos-ufs-y += phy-gs101-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-exynosautov920-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 > diff --git a/drivers/phy/samsung/phy-exynosautov920-ufs.c > b/drivers/phy/samsung/phy-exynosautov920-ufs.c > new file mode 100644 > index 000000000000..f00f82132921 > --- /dev/null > +++ b/drivers/phy/samsung/phy-exynosautov920-ufs.c > @@ -0,0 +1,170 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * UFS PHY driver data for Samsung ExynosAuto v920 SoC > + * > + * Copyright (C) 2024 Samsung Electronics Co., Ltd. > + */ > + > +#include "phy-samsung-ufs.h" > + > +#define EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL > 0x708 > +#define EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL_MASK > 0x1 > +#define EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL_EN > BIT(0) > +#define EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS > 0x5e > + > +#define EXYNOSAUTOV920_CDR_LOCK_OFFSET 0xCE4 > + > +#define PHY_EXYNOSAUTOV920_LANE_OFFSET 0x200 > +#define PHY_TRSV_REG_CFG_AUTOV920(o, v, d) \ > + PHY_TRSV_REG_CFG_OFFSET(o, v, d, > PHY_EXYNOSAUTOV920_LANE_OFFSET) > + > +/* Calibration for phy initialization */ static const struct > +samsung_ufs_phy_cfg exynosautov920_pre_init_cfg[] = { > + PHY_COMN_REG_CFG(0x29, 0x22, PWR_MODE_ANY), > + PHY_COMN_REG_CFG(0x43, 0x10, PWR_MODE_ANY), > + PHY_COMN_REG_CFG(0x3C, 0x14, PWR_MODE_ANY), > + PHY_COMN_REG_CFG(0x46, 0x48, PWR_MODE_ANY), > + PHY_COMN_REG_CFG(0x04, 0x95, PWR_MODE_ANY), > + PHY_COMN_REG_CFG(0x06, 0x30, PWR_MODE_ANY), > + > + PHY_TRSV_REG_CFG_AUTOV920(0x200, 0x00, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x201, 0x06, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x202, 0x06, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x203, 0x0A, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x204, 0x00, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x205, 0x10, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x207, 0x0C, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2E1, 0xC0, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x22D, 0xF8, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x234, 0x60, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x238, 0x13, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x239, 0x48, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x23A, 0x01, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x23B, 0x29, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x23C, 0x2A, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x23D, 0x01, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x23E, 0x14, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x23F, 0x13, PWR_MODE_ANY), > + > + PHY_TRSV_REG_CFG_AUTOV920(0x240, 0x4A, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x243, 0x40, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x244, 0x02, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x25D, 0x00, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x25E, 0x3F, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x25F, 0xFF, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x26F, 0xF0, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x273, 0x33, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x274, 0x50, PWR_MODE_ANY), > + > + PHY_TRSV_REG_CFG_AUTOV920(0x284, 0x02, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x285, 0x02, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2A2, 0x04, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x27D, 0x01, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2FA, 0x01, PWR_MODE_ANY), > + > + PHY_TRSV_REG_CFG_AUTOV920(0x286, 0x03, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x287, 0x03, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x288, 0x03, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x289, 0x03, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2B3, 0x04, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2B6, 0x0B, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2B7, 0x0B, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2B8, 0x0B, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2B9, 0x0B, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2BA, 0x0B, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2BB, 0x06, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2BC, 0x06, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2BD, 0x06, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x2BE, 0x06, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x34B, 0x01, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x34C, 0x24, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x34D, 0x23, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x34E, 0x45, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x34F, 0x00, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x350, 0x31, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x351, 0x00, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x352, 0x02, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x353, 0x00, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x354, 0x01, PWR_MODE_ANY), > + > + PHY_COMN_REG_CFG(0x43, 0x18, PWR_MODE_ANY), > + PHY_COMN_REG_CFG(0x43, 0x00, PWR_MODE_ANY), > + > + END_UFS_PHY_CFG, > +}; > + > +/* Calibration for HS mode series A/B */ static const struct > +samsung_ufs_phy_cfg exynosautov920_pre_pwr_hs_cfg[] = { > + PHY_TRSV_REG_CFG_AUTOV920(0x369, 0x11, PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x246, 0x03, PWR_MODE_ANY), > + > + END_UFS_PHY_CFG, > +}; > + > +static const struct samsung_ufs_phy_cfg exynosautov920_post_pwr_hs_cfg[] > = { > + END_UFS_PHY_CFG, > +}; > + > +#define DELAY_IN_US 40 > +#define RETRY_CNT 100 > +#define EXYNOSAUTOV920_CDR_LOCK_MASK 0x8 > +int samsung_exynosautov920_ufs_phy_wait_cdr_lock(struct phy *phy, u8 Just "exynosautov920_ufs_phy_wait_cdr_lock", without samsung_ > +lane) { > + struct samsung_ufs_phy *ufs_phy = get_samsung_ufs_phy(phy); > + int ret = 0; > + u32 reg, i; > + > + struct samsung_ufs_phy_cfg cfg[4] = { > + PHY_TRSV_REG_CFG_AUTOV920(0x222, 0x10, > PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x222, 0x18, > PWR_MODE_ANY), > + PHY_TRSV_REG_CFG_AUTOV920(0x246, 0x01, > PWR_MODE_ANY), > + END_UFS_PHY_CFG, > + }; > + > + for (i = 0; i < RETRY_CNT; i++) { > + udelay(DELAY_IN_US); > + > + reg = readl(ufs_phy->reg_pma + > EXYNOSAUTOV920_CDR_LOCK_OFFSET + > + > (PHY_APB_ADDR(PHY_EXYNOSAUTOV920_LANE_OFFSET) * lane)); > + if ((reg & EXYNOSAUTOV920_CDR_LOCK_MASK) > + == > EXYNOSAUTOV920_CDR_LOCK_MASK) > + break; Probably you can just return success from here. > + > + udelay(DELAY_IN_US); > + > + samsung_ufs_phy_config(ufs_phy, &cfg[0], lane); > + samsung_ufs_phy_config(ufs_phy, &cfg[1], lane); > + } > + > + samsung_ufs_phy_config(ufs_phy, &cfg[2], lane); Why this is needed? Please write a line or two about this. > + > + if (i >= RETRY_CNT) { This become reductant, once you return from for loop above. > + dev_err(ufs_phy->dev, "failed to get phy cdr lock\n"); > + ret = -ETIMEDOUT; > + } > + > + return ret; > +} > + > +static const struct samsung_ufs_phy_cfg > *exynosautov920_ufs_phy_cfgs[CFG_TAG_MAX] = { > + [CFG_PRE_INIT] = exynosautov920_pre_init_cfg, > + [CFG_PRE_PWR_HS] = exynosautov920_pre_pwr_hs_cfg, > + [CFG_POST_PWR_HS] = exynosautov920_post_pwr_hs_cfg, > +}; > + > +static const char * const exynosautov920_ufs_phy_clks[] = { > + "ref_clk", > +}; > + > +const struct samsung_ufs_phy_drvdata exynosautov920_ufs_phy = { > + .cfgs = exynosautov920_ufs_phy_cfgs, > + .isol = { > + .offset = EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL, > + .mask = > EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL_MASK, > + .en = EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL_EN, > + }, > + .clk_list = exynosautov920_ufs_phy_clks, > + .num_clks = ARRAY_SIZE(exynosautov920_ufs_phy_clks), > + .cdr_lock_status_offset = > EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS, > + .wait_for_cdr = samsung_exynosautov920_ufs_phy_wait_cdr_lock, > +}; > diff --git a/drivers/phy/samsung/phy-samsung-ufs.c > b/drivers/phy/samsung/phy-samsung-ufs.c > index 6c5d41552649..c13fe149bc75 100644 > --- a/drivers/phy/samsung/phy-samsung-ufs.c > +++ b/drivers/phy/samsung/phy-samsung-ufs.c > @@ -28,9 +28,9 @@ > > #define PHY_DEF_LANE_CNT 1 > > -static void samsung_ufs_phy_config(struct samsung_ufs_phy *phy, > - const struct samsung_ufs_phy_cfg *cfg, > - u8 lane) > +void samsung_ufs_phy_config(struct samsung_ufs_phy *phy, > + const struct samsung_ufs_phy_cfg *cfg, > + u8 lane) > { > enum {LANE_0, LANE_1}; /* lane index */ > > @@ -323,6 +323,9 @@ static const struct of_device_id > samsung_ufs_phy_match[] = { > }, { > .compatible = "samsung,exynosautov9-ufs-phy", > .data = &exynosautov9_ufs_phy, > + }, { > + .compatible = "samsung,exynosautov920-ufs-phy", > + .data = &exynosautov920_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 9b7deef6e10f..7f759141ee87 100644 > --- a/drivers/phy/samsung/phy-samsung-ufs.h > +++ b/drivers/phy/samsung/phy-samsung-ufs.h > @@ -143,9 +143,13 @@ static inline void samsung_ufs_phy_ctrl_isol( } > > int samsung_ufs_phy_wait_for_lock_acq(struct phy *phy, u8 lane); > +int samsung_exynosautov920_ufs_phy_wait_cdr_lock(struct phy *phy, u8 > +lane); void samsung_ufs_phy_config(struct samsung_ufs_phy *phy, > + const struct samsung_ufs_phy_cfg *cfg, u8 lane); > > 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 exynosautov920_ufs_phy; > extern const struct samsung_ufs_phy_drvdata fsd_ufs_phy; extern const struct > samsung_ufs_phy_drvdata tensor_gs101_ufs_phy; > > -- > 2.45.2
diff --git a/drivers/phy/samsung/Makefile b/drivers/phy/samsung/Makefile index fea1f96d0e43..342682638a87 100644 --- a/drivers/phy/samsung/Makefile +++ b/drivers/phy/samsung/Makefile @@ -7,6 +7,7 @@ phy-exynos-ufs-y += phy-gs101-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-exynosautov920-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 diff --git a/drivers/phy/samsung/phy-exynosautov920-ufs.c b/drivers/phy/samsung/phy-exynosautov920-ufs.c new file mode 100644 index 000000000000..f00f82132921 --- /dev/null +++ b/drivers/phy/samsung/phy-exynosautov920-ufs.c @@ -0,0 +1,170 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * UFS PHY driver data for Samsung ExynosAuto v920 SoC + * + * Copyright (C) 2024 Samsung Electronics Co., Ltd. + */ + +#include "phy-samsung-ufs.h" + +#define EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL 0x708 +#define EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL_MASK 0x1 +#define EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL_EN BIT(0) +#define EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS 0x5e + +#define EXYNOSAUTOV920_CDR_LOCK_OFFSET 0xCE4 + +#define PHY_EXYNOSAUTOV920_LANE_OFFSET 0x200 +#define PHY_TRSV_REG_CFG_AUTOV920(o, v, d) \ + PHY_TRSV_REG_CFG_OFFSET(o, v, d, PHY_EXYNOSAUTOV920_LANE_OFFSET) + +/* Calibration for phy initialization */ +static const struct samsung_ufs_phy_cfg exynosautov920_pre_init_cfg[] = { + PHY_COMN_REG_CFG(0x29, 0x22, PWR_MODE_ANY), + PHY_COMN_REG_CFG(0x43, 0x10, PWR_MODE_ANY), + PHY_COMN_REG_CFG(0x3C, 0x14, PWR_MODE_ANY), + PHY_COMN_REG_CFG(0x46, 0x48, PWR_MODE_ANY), + PHY_COMN_REG_CFG(0x04, 0x95, PWR_MODE_ANY), + PHY_COMN_REG_CFG(0x06, 0x30, PWR_MODE_ANY), + + PHY_TRSV_REG_CFG_AUTOV920(0x200, 0x00, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x201, 0x06, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x202, 0x06, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x203, 0x0A, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x204, 0x00, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x205, 0x10, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x207, 0x0C, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2E1, 0xC0, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x22D, 0xF8, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x234, 0x60, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x238, 0x13, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x239, 0x48, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x23A, 0x01, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x23B, 0x29, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x23C, 0x2A, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x23D, 0x01, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x23E, 0x14, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x23F, 0x13, PWR_MODE_ANY), + + PHY_TRSV_REG_CFG_AUTOV920(0x240, 0x4A, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x243, 0x40, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x244, 0x02, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x25D, 0x00, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x25E, 0x3F, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x25F, 0xFF, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x26F, 0xF0, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x273, 0x33, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x274, 0x50, PWR_MODE_ANY), + + PHY_TRSV_REG_CFG_AUTOV920(0x284, 0x02, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x285, 0x02, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2A2, 0x04, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x27D, 0x01, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2FA, 0x01, PWR_MODE_ANY), + + PHY_TRSV_REG_CFG_AUTOV920(0x286, 0x03, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x287, 0x03, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x288, 0x03, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x289, 0x03, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2B3, 0x04, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2B6, 0x0B, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2B7, 0x0B, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2B8, 0x0B, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2B9, 0x0B, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2BA, 0x0B, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2BB, 0x06, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2BC, 0x06, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2BD, 0x06, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x2BE, 0x06, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x34B, 0x01, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x34C, 0x24, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x34D, 0x23, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x34E, 0x45, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x34F, 0x00, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x350, 0x31, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x351, 0x00, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x352, 0x02, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x353, 0x00, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x354, 0x01, PWR_MODE_ANY), + + PHY_COMN_REG_CFG(0x43, 0x18, PWR_MODE_ANY), + PHY_COMN_REG_CFG(0x43, 0x00, PWR_MODE_ANY), + + END_UFS_PHY_CFG, +}; + +/* Calibration for HS mode series A/B */ +static const struct samsung_ufs_phy_cfg exynosautov920_pre_pwr_hs_cfg[] = { + PHY_TRSV_REG_CFG_AUTOV920(0x369, 0x11, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x246, 0x03, PWR_MODE_ANY), + + END_UFS_PHY_CFG, +}; + +static const struct samsung_ufs_phy_cfg exynosautov920_post_pwr_hs_cfg[] = { + END_UFS_PHY_CFG, +}; + +#define DELAY_IN_US 40 +#define RETRY_CNT 100 +#define EXYNOSAUTOV920_CDR_LOCK_MASK 0x8 +int samsung_exynosautov920_ufs_phy_wait_cdr_lock(struct phy *phy, u8 lane) +{ + struct samsung_ufs_phy *ufs_phy = get_samsung_ufs_phy(phy); + int ret = 0; + u32 reg, i; + + struct samsung_ufs_phy_cfg cfg[4] = { + PHY_TRSV_REG_CFG_AUTOV920(0x222, 0x10, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x222, 0x18, PWR_MODE_ANY), + PHY_TRSV_REG_CFG_AUTOV920(0x246, 0x01, PWR_MODE_ANY), + END_UFS_PHY_CFG, + }; + + for (i = 0; i < RETRY_CNT; i++) { + udelay(DELAY_IN_US); + + reg = readl(ufs_phy->reg_pma + EXYNOSAUTOV920_CDR_LOCK_OFFSET + + (PHY_APB_ADDR(PHY_EXYNOSAUTOV920_LANE_OFFSET) * lane)); + if ((reg & EXYNOSAUTOV920_CDR_LOCK_MASK) + == EXYNOSAUTOV920_CDR_LOCK_MASK) + break; + + udelay(DELAY_IN_US); + + samsung_ufs_phy_config(ufs_phy, &cfg[0], lane); + samsung_ufs_phy_config(ufs_phy, &cfg[1], lane); + } + + samsung_ufs_phy_config(ufs_phy, &cfg[2], lane); + + if (i >= RETRY_CNT) { + dev_err(ufs_phy->dev, "failed to get phy cdr lock\n"); + ret = -ETIMEDOUT; + } + + return ret; +} + +static const struct samsung_ufs_phy_cfg *exynosautov920_ufs_phy_cfgs[CFG_TAG_MAX] = { + [CFG_PRE_INIT] = exynosautov920_pre_init_cfg, + [CFG_PRE_PWR_HS] = exynosautov920_pre_pwr_hs_cfg, + [CFG_POST_PWR_HS] = exynosautov920_post_pwr_hs_cfg, +}; + +static const char * const exynosautov920_ufs_phy_clks[] = { + "ref_clk", +}; + +const struct samsung_ufs_phy_drvdata exynosautov920_ufs_phy = { + .cfgs = exynosautov920_ufs_phy_cfgs, + .isol = { + .offset = EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL, + .mask = EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL_MASK, + .en = EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CTRL_EN, + }, + .clk_list = exynosautov920_ufs_phy_clks, + .num_clks = ARRAY_SIZE(exynosautov920_ufs_phy_clks), + .cdr_lock_status_offset = EXYNOSAUTOV920_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS, + .wait_for_cdr = samsung_exynosautov920_ufs_phy_wait_cdr_lock, +}; diff --git a/drivers/phy/samsung/phy-samsung-ufs.c b/drivers/phy/samsung/phy-samsung-ufs.c index 6c5d41552649..c13fe149bc75 100644 --- a/drivers/phy/samsung/phy-samsung-ufs.c +++ b/drivers/phy/samsung/phy-samsung-ufs.c @@ -28,9 +28,9 @@ #define PHY_DEF_LANE_CNT 1 -static void samsung_ufs_phy_config(struct samsung_ufs_phy *phy, - const struct samsung_ufs_phy_cfg *cfg, - u8 lane) +void samsung_ufs_phy_config(struct samsung_ufs_phy *phy, + const struct samsung_ufs_phy_cfg *cfg, + u8 lane) { enum {LANE_0, LANE_1}; /* lane index */ @@ -323,6 +323,9 @@ static const struct of_device_id samsung_ufs_phy_match[] = { }, { .compatible = "samsung,exynosautov9-ufs-phy", .data = &exynosautov9_ufs_phy, + }, { + .compatible = "samsung,exynosautov920-ufs-phy", + .data = &exynosautov920_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 9b7deef6e10f..7f759141ee87 100644 --- a/drivers/phy/samsung/phy-samsung-ufs.h +++ b/drivers/phy/samsung/phy-samsung-ufs.h @@ -143,9 +143,13 @@ static inline void samsung_ufs_phy_ctrl_isol( } int samsung_ufs_phy_wait_for_lock_acq(struct phy *phy, u8 lane); +int samsung_exynosautov920_ufs_phy_wait_cdr_lock(struct phy *phy, u8 lane); +void samsung_ufs_phy_config(struct samsung_ufs_phy *phy, + const struct samsung_ufs_phy_cfg *cfg, u8 lane); 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 exynosautov920_ufs_phy; extern const struct samsung_ufs_phy_drvdata fsd_ufs_phy; extern const struct samsung_ufs_phy_drvdata tensor_gs101_ufs_phy;
Add support for ExynosAutov920 ufs phy driver. Signed-off-by: Sowon Na <sowon.na@samsung.com> --- drivers/phy/samsung/Makefile | 1 + drivers/phy/samsung/phy-exynosautov920-ufs.c | 170 +++++++++++++++++++ drivers/phy/samsung/phy-samsung-ufs.c | 9 +- drivers/phy/samsung/phy-samsung-ufs.h | 4 + 4 files changed, 181 insertions(+), 3 deletions(-) create mode 100644 drivers/phy/samsung/phy-exynosautov920-ufs.c