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phy: samsung-ufs: support exynosauto ufs phy driver

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This patch adds to support phy-exynosautov9-ufs driver for ExynosAuto v9
series SoCs. The patch adds "samsung,exynosautov9-ufs-phy" compatible.
Unlike previous exynos ufs phy, the chip uses 0x50 offset as
PHY_TRSV_REG_CFG_OFFSET.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210709094524.110193-3-chanho61.park@samsung.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Chanho Park 2021-07-09 18:45:24 +09:00 committed by Vinod Koul
parent b95637e2da
commit d64519249e
5 changed files with 78 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml
View File

@ -16,6 +16,7 @@ properties:
compatible:
enum:
- samsung,exynos7-ufs-phy
- samsung,exynosautov9-ufs-phy
reg:
maxItems: 1

1
drivers/phy/samsung/Makefile
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@ -5,6 +5,7 @@ obj-$(CONFIG_PHY_EXYNOS_PCIE) += phy-exynos-pcie.o
obj-$(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
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

67
drivers/phy/samsung/phy-exynosautov9-ufs.c Normal file
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@ -0,0 +1,67 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* UFS PHY driver data for Samsung EXYNOSAUTO v9 SoC
*
* Copyright (C) 2021 Samsung Electronics Co., Ltd.
*/
#include "phy-samsung-ufs.h"
#define EXYNOSAUTOV9_EMBEDDED_COMBO_PHY_CTRL 0x728
#define EXYNOSAUTOV9_EMBEDDED_COMBO_PHY_CTRL_MASK 0x1
#define EXYNOSAUTOV9_EMBEDDED_COMBO_PHY_CTRL_EN BIT(0)
#define PHY_TRSV_REG_CFG_AUTOV9(o, v, d) \
PHY_TRSV_REG_CFG_OFFSET(o, v, d, 0x50)
/* Calibration for phy initialization */
static const struct samsung_ufs_phy_cfg exynosautov9_pre_init_cfg[] = {
PHY_COMN_REG_CFG(0x023, 0x80, PWR_MODE_ANY),
PHY_COMN_REG_CFG(0x01d, 0x10, PWR_MODE_ANY),
PHY_TRSV_REG_CFG_AUTOV9(0x044, 0xb5, PWR_MODE_ANY),
PHY_TRSV_REG_CFG_AUTOV9(0x04d, 0x43, PWR_MODE_ANY),
PHY_TRSV_REG_CFG_AUTOV9(0x05b, 0x20, PWR_MODE_ANY),
PHY_TRSV_REG_CFG_AUTOV9(0x05e, 0xc0, PWR_MODE_ANY),
PHY_TRSV_REG_CFG_AUTOV9(0x038, 0x12, PWR_MODE_ANY),
PHY_TRSV_REG_CFG_AUTOV9(0x059, 0x58, PWR_MODE_ANY),
PHY_TRSV_REG_CFG_AUTOV9(0x06c, 0x18, PWR_MODE_ANY),
PHY_TRSV_REG_CFG_AUTOV9(0x06d, 0x02, PWR_MODE_ANY),
PHY_COMN_REG_CFG(0x023, 0xc0, PWR_MODE_ANY),
PHY_COMN_REG_CFG(0x023, 0x00, PWR_MODE_ANY),
PHY_TRSV_REG_CFG(0x042, 0x5d, PWR_MODE_ANY),
PHY_TRSV_REG_CFG(0x043, 0x80, PWR_MODE_ANY),
END_UFS_PHY_CFG,
};
/* Calibration for HS mode series A/B */
static const struct samsung_ufs_phy_cfg exynosautov9_pre_pwr_hs_cfg[] = {
PHY_TRSV_REG_CFG(0x032, 0xbc, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x03c, 0x7f, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x048, 0xc0, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x04a, 0x00, PWR_MODE_HS_G3_SER_B),
PHY_TRSV_REG_CFG(0x04b, 0x10, PWR_MODE_HS_G1_SER_B |
PWR_MODE_HS_G3_SER_B),
PHY_TRSV_REG_CFG(0x04d, 0x63, PWR_MODE_HS_G3_SER_B),
END_UFS_PHY_CFG,
};
static const struct samsung_ufs_phy_cfg *exynosautov9_ufs_phy_cfgs[CFG_TAG_MAX] = {
[CFG_PRE_INIT] = exynosautov9_pre_init_cfg,
[CFG_PRE_PWR_HS] = exynosautov9_pre_pwr_hs_cfg,
};
const struct samsung_ufs_phy_drvdata exynosautov9_ufs_phy = {
.cfg = exynosautov9_ufs_phy_cfgs,
.isol = {
.offset = EXYNOSAUTOV9_EMBEDDED_COMBO_PHY_CTRL,
.mask = EXYNOSAUTOV9_EMBEDDED_COMBO_PHY_CTRL_MASK,
.en = EXYNOSAUTOV9_EMBEDDED_COMBO_PHY_CTRL_EN,
},
.has_symbol_clk = 0,
};

3
drivers/phy/samsung/phy-samsung-ufs.c
View File

@ -347,6 +347,9 @@ static const struct of_device_id samsung_ufs_phy_match[] = {
{
.compatible = "samsung,exynos7-ufs-phy",
.data = &exynos7_ufs_phy,
}, {
.compatible = "samsung,exynosautov9-ufs-phy",
.data = &exynosautov9_ufs_phy,
},
{},
};

8
drivers/phy/samsung/phy-samsung-ufs.h
View File

@ -27,14 +27,17 @@
.id = PHY_COMN_BLK, \
}
#define PHY_TRSV_REG_CFG(o, v, d) { \
#define PHY_TRSV_REG_CFG_OFFSET(o, v, d, c) { \
.off_0 = PHY_APB_ADDR((o)), \
.off_1 = PHY_APB_ADDR((o) + PHY_TRSV_CH_OFFSET), \
.off_1 = PHY_APB_ADDR((o) + (c)), \
.val = (v), \
.desc = (d), \
.id = PHY_TRSV_BLK, \
}
#define PHY_TRSV_REG_CFG(o, v, d) \
PHY_TRSV_REG_CFG_OFFSET(o, v, d, PHY_TRSV_CH_OFFSET)
/* UFS PHY registers */
#define PHY_PLL_LOCK_STATUS 0x1e
#define PHY_CDR_LOCK_STATUS 0x5e
@ -138,5 +141,6 @@ 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;
#endif /* _PHY_SAMSUNG_UFS_ */