From 359c176de550be54805e762d296a9fec3dc24d63 Mon Sep 17 00:00:00 2001 From: Yann Gautier Date: Tue, 13 Sep 2022 13:23:46 +0200 Subject: [PATCH] mmc: stm32_sdmmc2: manage vqmmc The SDMMC IOs can be in an IO domain, that has to be enabled. This is done by enabling vqmmc in the driver. This has no impact on configurations not using an IO domain, the check can then be executed on all platforms managing regulator, and the vqmmc regulator enabled on all platforms having it in their DT. Signed-off-by: Yann Gautier Reviewed-by: Jaehoon Chung --- drivers/mmc/stm32_sdmmc2.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) 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 #include #include +#include #include 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)