diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/stm32_sdmmc2.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/mmc/stm32_sdmmc2.c b/drivers/mmc/stm32_sdmmc2.c index d42262c14f..b68594de37 100644 --- a/drivers/mmc/stm32_sdmmc2.c +++ b/drivers/mmc/stm32_sdmmc2.c @@ -25,6 +25,7 @@ #include <asm/io.h> #include <asm/gpio.h> #include <linux/iopoll.h> +#include <power/regulator.h> #include <watchdog.h> struct stm32_sdmmc2_plat { @@ -36,6 +37,9 @@ struct stm32_sdmmc2_plat { struct gpio_desc cd_gpio; u32 clk_reg_msk; u32 pwr_reg_msk; +#if CONFIG_IS_ENABLED(DM_REGULATOR) + bool vqmmc_enabled; +#endif }; struct stm32_sdmmc2_ctx { @@ -572,6 +576,15 @@ static void stm32_sdmmc2_pwron(struct stm32_sdmmc2_plat *plat) plat->base + SDMMC_POWER); /* during the first 74 SDMMC_CK cycles the SDMMC is still disabled. */ + +#if CONFIG_IS_ENABLED(DM_REGULATOR) + if (plat->mmc.vqmmc_supply && !plat->vqmmc_enabled) { + if (regulator_set_enable_if_allowed(plat->mmc.vqmmc_supply, true)) + dev_dbg(plat->mmc.dev, "failed to enable vqmmc-supply\n"); + else + plat->vqmmc_enabled = true; + } +#endif } #define IS_RISING_EDGE(reg) (reg & SDMMC_CLKCR_NEGEDGE ? 0 : 1) |