drivers/phy/samsung/phy-fsd-ufs.c

Source file repositories/reference/linux-study-clean/drivers/phy/samsung/phy-fsd-ufs.c

File Facts

System
Linux kernel
Corpus path
drivers/phy/samsung/phy-fsd-ufs.c
Extension
.c
Size
2029 bytes
Lines
65
Domain
Driver Families
Bucket
drivers/phy
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// 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,
};

static const char * const fsd_ufs_phy_clks[] = {
	"ref_clk",
};

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,
	},
	.clk_list = fsd_ufs_phy_clks,
	.num_clks = ARRAY_SIZE(fsd_ufs_phy_clks),
	.cdr_lock_status_offset = FSD_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS,
	.wait_for_cdr = samsung_ufs_phy_wait_for_lock_acq,
};

Annotation

Implementation Notes