linux/drivers/phy/samsung/phy-exynos7-ufs.c
Chanho Park 8d5bb683d5 phy: samsung-ufs: convert phy clk usage to clk_bulk API
Instead of using separated clock manipulation, this converts the phy
clock usage to be clk_bulk APIs. By using this, we can completely
remove has_symbol_clk check and symbol clk variables.
Furthermore, clk_get should be moved to probe because there is no need
to get them in the phy_init callback.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220706020255.151177-2-chanho61.park@samsung.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-07-08 10:38:59 +05:30

86 lines
3.1 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* UFS PHY driver data for Samsung EXYNOS7 SoC
*
* Copyright (C) 2020 Samsung Electronics Co., Ltd.
*/
#include "phy-samsung-ufs.h"
#define EXYNOS7_EMBEDDED_COMBO_PHY_CTRL 0x720
#define EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_MASK 0x1
#define EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_EN BIT(0)
#define EXYNOS7_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS 0x5e
/* Calibration for phy initialization */
static const struct samsung_ufs_phy_cfg exynos7_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, 0x84, 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 exynos7_pre_pwr_hs_cfg[] = {
PHY_COMN_REG_CFG(0x00f, 0xfa, PWR_MODE_HS_ANY),
PHY_COMN_REG_CFG(0x010, 0x82, PWR_MODE_HS_ANY),
PHY_COMN_REG_CFG(0x011, 0x1e, PWR_MODE_HS_ANY),
/* Setting order: 1st(0x16, 2nd(0x15) */
PHY_COMN_REG_CFG(0x016, 0xff, PWR_MODE_HS_ANY),
PHY_COMN_REG_CFG(0x015, 0x80, PWR_MODE_HS_ANY),
PHY_COMN_REG_CFG(0x017, 0x94, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x036, 0x32, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x037, 0x43, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x038, 0x3f, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x042, 0x88, PWR_MODE_HS_G2_SER_A),
PHY_TRSV_REG_CFG(0x042, 0xbb, PWR_MODE_HS_G2_SER_B),
PHY_TRSV_REG_CFG(0x043, 0xa6, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x048, 0x74, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x034, 0x35, PWR_MODE_HS_G2_SER_A),
PHY_TRSV_REG_CFG(0x034, 0x36, PWR_MODE_HS_G2_SER_B),
PHY_TRSV_REG_CFG(0x035, 0x5b, PWR_MODE_HS_G2_SER_A),
PHY_TRSV_REG_CFG(0x035, 0x5c, PWR_MODE_HS_G2_SER_B),
END_UFS_PHY_CFG
};
/* Calibration for HS mode series A/B atfer PMC */
static const struct samsung_ufs_phy_cfg exynos7_post_pwr_hs_cfg[] = {
PHY_COMN_REG_CFG(0x015, 0x00, PWR_MODE_HS_ANY),
PHY_TRSV_REG_CFG(0x04d, 0x83, PWR_MODE_HS_ANY),
END_UFS_PHY_CFG
};
static const struct samsung_ufs_phy_cfg *exynos7_ufs_phy_cfgs[CFG_TAG_MAX] = {
[CFG_PRE_INIT] = exynos7_pre_init_cfg,
[CFG_PRE_PWR_HS] = exynos7_pre_pwr_hs_cfg,
[CFG_POST_PWR_HS] = exynos7_post_pwr_hs_cfg,
};
static const char * const exynos7_ufs_phy_clks[] = {
"tx0_symbol_clk", "rx0_symbol_clk", "rx1_symbol_clk", "ref_clk",
};
const struct samsung_ufs_phy_drvdata exynos7_ufs_phy = {
.cfgs = exynos7_ufs_phy_cfgs,
.isol = {
.offset = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL,
.mask = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_MASK,
.en = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_EN,
},
.clk_list = exynos7_ufs_phy_clks,
.num_clks = ARRAY_SIZE(exynos7_ufs_phy_clks),
.cdr_lock_status_offset = EXYNOS7_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS,
};