From 615dfe1aeaf6e536a123cd79f6fcbe47efe5ff07 Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Wed, 16 Oct 2024 11:17:16 +0200 Subject: [PATCH] mmc: msm_sdhci: enable vqmmc at probe if available On earlier platforms, the vqmmc regulator was enabled by the previous bootloader, but on the newest (SM8650) it's not and we need vqmmc to be enabled in order to have the card to respond. Signed-off-by: Neil Armstrong Reviewed-by: Jaehoon Chung Reviewed-by: Caleb Connolly --- drivers/mmc/msm_sdhci.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/mmc/msm_sdhci.c b/drivers/mmc/msm_sdhci.c index 4e5c932c07..27bb7052fc 100644 --- a/drivers/mmc/msm_sdhci.c +++ b/drivers/mmc/msm_sdhci.c @@ -15,6 +15,7 @@ #include #include #include +#include /* Non-standard registers needed for SDHCI startup */ #define SDCC_MCI_POWER 0x0 @@ -43,6 +44,7 @@ struct msm_sdhc { struct sdhci_host host; void *base; struct clk_bulk clks; + struct udevice *vqmmc; }; struct msm_sdhc_variant_info { @@ -163,6 +165,16 @@ static int msm_sdc_probe(struct udevice *dev) if (ret) return ret; + /* Get the vqmmc regulator and enable it if available */ + device_get_supply_regulator(dev, "vqmmc-supply", &prv->vqmmc); + if (prv->vqmmc) { + ret = regulator_set_enable_if_allowed(prv->vqmmc, true); + if (ret) { + printf("Failed to enable the VQMMC regulator\n"); + return ret; + } + } + var_info = (void *)dev_get_driver_data(dev); if (!var_info->mci_removed) { ret = msm_sdc_mci_init(prv); -- 2.39.5