xref: /linux/drivers/phy/samsung/phy-exynos7-ufs.c (revision 58f6259b7a08f8d47d4629609703d358b042f0fd)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * UFS PHY driver data for Samsung EXYNOS7 SoC
4  *
5  * Copyright (C) 2020 Samsung Electronics Co., Ltd.
6  */
7 
8 #include "phy-samsung-ufs.h"
9 
10 #define EXYNOS7_EMBEDDED_COMBO_PHY_CTRL	0x720
11 #define EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_MASK	0x1
12 #define EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_EN	BIT(0)
13 
14 #define EXYNOS7_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS	0x5e
15 
16 /* Calibration for phy initialization */
17 static const struct samsung_ufs_phy_cfg exynos7_pre_init_cfg[] = {
18 	PHY_COMN_REG_CFG(0x00f, 0xfa, PWR_MODE_ANY),
19 	PHY_COMN_REG_CFG(0x010, 0x82, PWR_MODE_ANY),
20 	PHY_COMN_REG_CFG(0x011, 0x1e, PWR_MODE_ANY),
21 	PHY_COMN_REG_CFG(0x017, 0x84, PWR_MODE_ANY),
22 	PHY_TRSV_REG_CFG(0x035, 0x58, PWR_MODE_ANY),
23 	PHY_TRSV_REG_CFG(0x036, 0x32, PWR_MODE_ANY),
24 	PHY_TRSV_REG_CFG(0x037, 0x40, PWR_MODE_ANY),
25 	PHY_TRSV_REG_CFG(0x03b, 0x83, PWR_MODE_ANY),
26 	PHY_TRSV_REG_CFG(0x042, 0x88, PWR_MODE_ANY),
27 	PHY_TRSV_REG_CFG(0x043, 0xa6, PWR_MODE_ANY),
28 	PHY_TRSV_REG_CFG(0x048, 0x74, PWR_MODE_ANY),
29 	PHY_TRSV_REG_CFG(0x04c, 0x5b, PWR_MODE_ANY),
30 	PHY_TRSV_REG_CFG(0x04d, 0x83, PWR_MODE_ANY),
31 	PHY_TRSV_REG_CFG(0x05c, 0x14, PWR_MODE_ANY),
32 	END_UFS_PHY_CFG
33 };
34 
35 /* Calibration for HS mode series A/B */
36 static const struct samsung_ufs_phy_cfg exynos7_pre_pwr_hs_cfg[] = {
37 	PHY_COMN_REG_CFG(0x00f, 0xfa, PWR_MODE_HS_ANY),
38 	PHY_COMN_REG_CFG(0x010, 0x82, PWR_MODE_HS_ANY),
39 	PHY_COMN_REG_CFG(0x011, 0x1e, PWR_MODE_HS_ANY),
40 	/* Setting order: 1st(0x16, 2nd(0x15) */
41 	PHY_COMN_REG_CFG(0x016, 0xff, PWR_MODE_HS_ANY),
42 	PHY_COMN_REG_CFG(0x015, 0x80, PWR_MODE_HS_ANY),
43 	PHY_COMN_REG_CFG(0x017, 0x94, PWR_MODE_HS_ANY),
44 	PHY_TRSV_REG_CFG(0x036, 0x32, PWR_MODE_HS_ANY),
45 	PHY_TRSV_REG_CFG(0x037, 0x43, PWR_MODE_HS_ANY),
46 	PHY_TRSV_REG_CFG(0x038, 0x3f, PWR_MODE_HS_ANY),
47 	PHY_TRSV_REG_CFG(0x042, 0x88, PWR_MODE_HS_G2_SER_A),
48 	PHY_TRSV_REG_CFG(0x042, 0xbb, PWR_MODE_HS_G2_SER_B),
49 	PHY_TRSV_REG_CFG(0x043, 0xa6, PWR_MODE_HS_ANY),
50 	PHY_TRSV_REG_CFG(0x048, 0x74, PWR_MODE_HS_ANY),
51 	PHY_TRSV_REG_CFG(0x034, 0x35, PWR_MODE_HS_G2_SER_A),
52 	PHY_TRSV_REG_CFG(0x034, 0x36, PWR_MODE_HS_G2_SER_B),
53 	PHY_TRSV_REG_CFG(0x035, 0x5b, PWR_MODE_HS_G2_SER_A),
54 	PHY_TRSV_REG_CFG(0x035, 0x5c, PWR_MODE_HS_G2_SER_B),
55 	END_UFS_PHY_CFG
56 };
57 
58 /* Calibration for HS mode series A/B atfer PMC */
59 static const struct samsung_ufs_phy_cfg exynos7_post_pwr_hs_cfg[] = {
60 	PHY_COMN_REG_CFG(0x015, 0x00, PWR_MODE_HS_ANY),
61 	PHY_TRSV_REG_CFG(0x04d, 0x83, PWR_MODE_HS_ANY),
62 	END_UFS_PHY_CFG
63 };
64 
65 static const struct samsung_ufs_phy_cfg *exynos7_ufs_phy_cfgs[CFG_TAG_MAX] = {
66 	[CFG_PRE_INIT]		= exynos7_pre_init_cfg,
67 	[CFG_PRE_PWR_HS]	= exynos7_pre_pwr_hs_cfg,
68 	[CFG_POST_PWR_HS]	= exynos7_post_pwr_hs_cfg,
69 };
70 
71 static const char * const exynos7_ufs_phy_clks[] = {
72 	"tx0_symbol_clk", "rx0_symbol_clk", "rx1_symbol_clk", "ref_clk",
73 };
74 
75 const struct samsung_ufs_phy_drvdata exynos7_ufs_phy = {
76 	.cfgs = exynos7_ufs_phy_cfgs,
77 	.isol = {
78 		.offset = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL,
79 		.mask = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_MASK,
80 		.en = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_EN,
81 	},
82 	.clk_list = exynos7_ufs_phy_clks,
83 	.num_clks = ARRAY_SIZE(exynos7_ufs_phy_clks),
84 	.cdr_lock_status_offset = EXYNOS7_EMBEDDED_COMBO_PHY_CDR_LOCK_STATUS,
85 };
86