src/soc/mediatek/mt8196/msdc.c

   1 /* SPDX-License-Identifier: GPL-2.0-only OR MIT */
   2
   3 /*
   4  * This file is created based on MT8196 Functional Specification
   5  * Chapter number: 10.3
   6  */
   7
   8 #include <gpio.h>
   9 #include <soc/msdc.h>
  10 #include <soc/regulator.h>
  11
  12 static const struct pad_func sdcard_pins[] = {
  13         PAD_FUNC_DOWN(MSDC1_CLK, MSDC1_CLK),
  14         PAD_FUNC_UP(MSDC1_CMD, MSDC1_CMD),
  15         PAD_FUNC_UP(MSDC1_DAT0, MSDC1_DAT0),
  16         PAD_FUNC_UP(MSDC1_DAT1, MSDC1_DAT1),
  17         PAD_FUNC_UP(MSDC1_DAT2, MSDC1_DAT2),
  18         PAD_FUNC_UP(MSDC1_DAT3, MSDC1_DAT3),
  19 };
  20
  21 void mtk_msdc_configure_sdcard(void)
  22 {
  23         unsigned int i;
  24
  25         for (i = 0; i < ARRAY_SIZE(sdcard_pins); i++) {
  26                 gpio_set_mode(sdcard_pins[i].gpio, sdcard_pins[i].func);
  27                 gpio_set_pull(sdcard_pins[i].gpio, GPIO_PULL_ENABLE, sdcard_pins[i].select);
  28                 gpio_set_driving(sdcard_pins[i].gpio, GPIO_DRV_6_MA);
  29         }
  30
  31         /* enable SD card power */
  32         mainboard_enable_regulator(MTK_REGULATOR_VMCH, true);
  33         mainboard_enable_regulator(MTK_REGULATOR_VMC, true);
  34         mainboard_set_regulator_voltage(MTK_REGULATOR_VMCH, 3000000);
  35         mainboard_set_regulator_voltage(MTK_REGULATOR_VMC, 3000000);
  36 }