src/soc/mediatek/mt8186/msdc.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /*
   4  * This file is created based on MT8186 Functional Specification
   5  * Chapter number: 5.7
   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, 29, 0)
  15 DEFINE_BITFIELD(MSDC1_DRV, 23, 6)
  16 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_0, 18, 16)
  17 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_1, 22, 20)
  18 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_2, 26, 24)
  19 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_3, 30, 28)
  20 DEFINE_BITFIELD(MSDC1_GPIO_MODE1_0, 2, 0)
  21 DEFINE_BITFIELD(MSDC1_GPIO_MODE1_1, 6, 4)
  22
  23 #define MSDC0_BASE     0x11230000
  24 #define MSDC0_TOP_BASE 0x11cd0000
  25
  26 #define MSDC0_DRV_VALUE 0x1b6db6db
  27 #define MSDC1_DRV_VALUE 0x1b6db
  28 #define MSDC1_GPIO_MODE0_VALUE  0x1
  29 #define MSDC1_GPIO_MODE1_VALUE  0x1
  30
  31 enum {
  32         MSDC1_GPIO_MODE0_BASE = 0x100053a0,
  33         MSDC1_GPIO_MODE1_BASE = 0x100053b0,
  34 };
  35
  36 void mtk_msdc_configure_emmc(bool is_early_init)
  37 {
  38         void *gpio_base = (void *)IOCFG_LT_BASE;
  39         int i;
  40
  41         const gpio_t emmc_pu_pin[] = {
  42                 GPIO(MSDC0_DAT0), GPIO(MSDC0_DAT1),
  43                 GPIO(MSDC0_DAT2), GPIO(MSDC0_DAT3),
  44                 GPIO(MSDC0_DAT4), GPIO(MSDC0_DAT5),
  45                 GPIO(MSDC0_DAT6), GPIO(MSDC0_DAT7),
  46                 GPIO(MSDC0_CMD), GPIO(MSDC0_RSTB),
  47         };
  48
  49         const gpio_t emmc_pd_pin[] = {
  50                 GPIO(MSDC0_DSL), GPIO(MSDC0_CLK),
  51         };
  52
  53         for (i = 0; i < ARRAY_SIZE(emmc_pu_pin); i++)
  54                 gpio_set_pull(emmc_pu_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_UP);
  55
  56         for (i = 0; i < ARRAY_SIZE(emmc_pd_pin); i++)
  57                 gpio_set_pull(emmc_pd_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_DOWN);
  58
  59         /* set eMMC cmd/dat/clk pins driving to 8mA */
  60         SET32_BITFIELDS(gpio_base, MSDC0_DRV, MSDC0_DRV_VALUE);
  61
  62         if (is_early_init)
  63                 mtk_emmc_early_init((void *)MSDC0_BASE, (void *)MSDC0_TOP_BASE);
  64 }
  65
  66 void mtk_msdc_configure_sdcard(void)
  67 {
  68         void *gpio_base = (void *)IOCFG_LB_BASE;
  69         void *gpio_mode0_base = (void *)MSDC1_GPIO_MODE0_BASE;
  70         void *gpio_mode1_base = (void *)MSDC1_GPIO_MODE1_BASE;
  71         int i;
  72
  73         const gpio_t sdcard_pu_pin[] = {
  74                 GPIO(MSDC1_DAT0), GPIO(MSDC1_DAT1),
  75                 GPIO(MSDC1_DAT2), GPIO(MSDC1_DAT3),
  76                 GPIO(MSDC1_CMD),
  77         };
  78
  79         const gpio_t sdcard_pd_pin[] = {
  80                 GPIO(MSDC1_CLK),
  81         };
  82
  83         for (i = 0; i < ARRAY_SIZE(sdcard_pu_pin); i++)
  84                 gpio_set_pull(sdcard_pu_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_UP);
  85
  86         for (i = 0; i < ARRAY_SIZE(sdcard_pd_pin); i++)
  87                 gpio_set_pull(sdcard_pd_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_DOWN);
  88
  89         /* set sdcard cmd/dat/clk pins driving to 8mA */
  90         SET32_BITFIELDS(gpio_base, MSDC1_DRV, MSDC1_DRV_VALUE);
  91
  92         /* set sdcard dat2/dat0/dat3/cmd/clk pins to msdc1 mode */
  93         SET32_BITFIELDS(gpio_mode0_base,
  94                         MSDC1_GPIO_MODE0_0, MSDC1_GPIO_MODE0_VALUE,
  95                         MSDC1_GPIO_MODE0_1, MSDC1_GPIO_MODE0_VALUE,
  96                         MSDC1_GPIO_MODE0_2, MSDC1_GPIO_MODE0_VALUE,
  97                         MSDC1_GPIO_MODE0_3, MSDC1_GPIO_MODE0_VALUE);
  98
  99         /* set sdcard dat1 pin to msdc1 mode */
 100         SET32_BITFIELDS(gpio_mode1_base,
 101                         MSDC1_GPIO_MODE1_0, MSDC1_GPIO_MODE1_VALUE,
 102                         MSDC1_GPIO_MODE1_1, MSDC1_GPIO_MODE1_VALUE);
 103
 104         /* enable SDCard power */
 105         mainboard_set_regulator_voltage(MTK_REGULATOR_VMCH, 3300000);
 106         mainboard_set_regulator_voltage(MTK_REGULATOR_VMC, 3300000);
 107 }