1 /* SPDX-License-Identifier: GPL-2.0-only OR MIT */
2
3 /*
4 * This file is created based on MT8188 Functional Specification
5 * Chapter number: 5.9
6 */
7
8 #include <device/mmio.h>
9 #include <gpio.h>
10 #include <soc/addressmap.h>
11 #include <soc/regulator.h>
12 #include <soc/msdc.h>
13
14 DEFINE_BITFIELD(MSDC0_DRV_0, 29, 18)
15 DEFINE_BITFIELD(MSDC0_DRV_1, 17, 0)
16 DEFINE_BITFIELD(MSDC1_DRV, 26, 9)
17 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_0, 30, 28)
18 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_1, 26, 24)
19 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_2, 22, 20)
20 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_3, 18, 16)
21 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_4, 14, 12)
22 DEFINE_BITFIELD(MSDC1_GPIO_MODE1_0, 2, 0)
23
24 #define MSDC0_DRV_OFFSET_0 0x0
25 #define MSDC0_DRV_OFFSET_1 0x10
26 #define MSDC1_DRV_OFFSET_0 0x0
27
28 #define MSDC0_DRV_VALUE_0 0x6db
29 #define MSDC0_DRV_VALUE_1 0x1b6db
30 #define MSDC1_DRV_VALUE_0 0x1b6db
31 #define MSDC1_GPIO_MODE0_VALUE 0x1
32 #define MSDC1_GPIO_MODE1_VALUE 0x1
33
34 enum {
35 MSDC1_GPIO_MODE0_BASE = 0x10005440,
36 MSDC1_GPIO_MODE1_BASE = 0x10005450,
37 };
38
mtk_msdc_configure_emmc(bool is_early_init)39 void mtk_msdc_configure_emmc(bool is_early_init)
40 {
41 void *gpio_base = (void *)IOCFG_LT_BASE;
42 unsigned int i;
43
44 const gpio_t emmc_pu_pin[] = {
45 GPIO(EMMC_DAT0), GPIO(EMMC_DAT1),
46 GPIO(EMMC_DAT2), GPIO(EMMC_DAT3),
47 GPIO(EMMC_DAT4), GPIO(EMMC_DAT5),
48 GPIO(EMMC_DAT6), GPIO(EMMC_DAT7),
49 GPIO(EMMC_CMD), GPIO(EMMC_RSTB),
50 };
51
52 const gpio_t emmc_pd_pin[] = {
53 GPIO(EMMC_DSL), GPIO(EMMC_CLK),
54 };
55
56 for (i = 0; i < ARRAY_SIZE(emmc_pu_pin); i++)
57 gpio_set_pull(emmc_pu_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_UP);
58
59 for (i = 0; i < ARRAY_SIZE(emmc_pd_pin); i++)
60 gpio_set_pull(emmc_pd_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_DOWN);
61
62 /* set eMMC cmd/dat/clk pins driving to 8mA */
63 SET32_BITFIELDS(gpio_base + MSDC0_DRV_OFFSET_0, MSDC0_DRV_0, MSDC0_DRV_VALUE_0);
64 SET32_BITFIELDS(gpio_base + MSDC0_DRV_OFFSET_1, MSDC0_DRV_1, MSDC0_DRV_VALUE_1);
65
66 if (is_early_init)
67 mtk_emmc_early_init((void *)MSDC0_BASE, (void *)MSDC0_TOP_BASE);
68 }
69
mtk_msdc_configure_sdcard(void)70 void mtk_msdc_configure_sdcard(void)
71 {
72 void *gpio_base = (void *)IOCFG_RT_BASE;
73 void *gpio_mode0_base = (void *)MSDC1_GPIO_MODE0_BASE;
74 void *gpio_mode1_base = (void *)MSDC1_GPIO_MODE1_BASE;
75 unsigned int i;
76
77 const gpio_t sdcard_pu_pin[] = {
78 GPIO(MSDC1_DAT0), GPIO(MSDC1_DAT1),
79 GPIO(MSDC1_DAT2), GPIO(MSDC1_DAT3),
80 GPIO(MSDC1_CMD),
81 };
82
83 const gpio_t sdcard_pd_pin[] = {
84 GPIO(MSDC1_CLK),
85 };
86
87 for (i = 0; i < ARRAY_SIZE(sdcard_pu_pin); i++)
88 gpio_set_pull(sdcard_pu_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_UP);
89
90 for (i = 0; i < ARRAY_SIZE(sdcard_pd_pin); i++)
91 gpio_set_pull(sdcard_pd_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_DOWN);
92
93 /* set SD card cmd/dat/clk pins driving to 8mA */
94 SET32_BITFIELDS(gpio_base + MSDC1_DRV_OFFSET_0, MSDC1_DRV, MSDC1_DRV_VALUE_0);
95
96 /* set SD card dat2/dat1/dat0/cmd/clk pins to msdc1 mode */
97 SET32_BITFIELDS(gpio_mode0_base,
98 MSDC1_GPIO_MODE0_0, MSDC1_GPIO_MODE0_VALUE,
99 MSDC1_GPIO_MODE0_1, MSDC1_GPIO_MODE0_VALUE,
100 MSDC1_GPIO_MODE0_2, MSDC1_GPIO_MODE0_VALUE,
101 MSDC1_GPIO_MODE0_3, MSDC1_GPIO_MODE0_VALUE,
102 MSDC1_GPIO_MODE0_4, MSDC1_GPIO_MODE0_VALUE);
103
104 /* set SD card dat3 pin to msdc1 mode */
105 SET32_BITFIELDS(gpio_mode1_base,
106 MSDC1_GPIO_MODE1_0, MSDC1_GPIO_MODE1_VALUE);
107
108 /* enable SD card power */
109 mainboard_enable_regulator(MTK_REGULATOR_VMCH, true);
110 mainboard_enable_regulator(MTK_REGULATOR_VMC, true);
111 mainboard_set_regulator_voltage(MTK_REGULATOR_VMCH, 3000000);
112 mainboard_set_regulator_voltage(MTK_REGULATOR_VMC, 3000000);
113 }
114