Add reset control functionality to the SDHCI Cadence driver to properly handle hardware reset sequences during probe. This ensures the controller is in a known state before initialization.
Signed-off-by: Tanmay Kathpalia <[email protected]> Reviewed-by: Balsundar Ponnusamy <[email protected]> --- drivers/mmc/sdhci-cadence.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mmc/sdhci-cadence.c b/drivers/mmc/sdhci-cadence.c index 7d169efa476..6c9d24fe5f7 100644 --- a/drivers/mmc/sdhci-cadence.c +++ b/drivers/mmc/sdhci-cadence.c @@ -15,6 +15,7 @@ #include <linux/sizes.h> #include <linux/libfdt.h> #include <mmc.h> +#include <reset.h> #include <sdhci.h> #include "sdhci-cadence.h" @@ -214,6 +215,7 @@ static int sdhci_cdns_probe(struct udevice *dev) struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); struct sdhci_cdns_plat *plat = dev_get_plat(dev); struct sdhci_host *host = dev_get_priv(dev); + struct reset_ctl_bulk reset_bulk; fdt_addr_t base; int ret; @@ -225,6 +227,10 @@ static int sdhci_cdns_probe(struct udevice *dev) if (!plat->hrs_addr) return -ENOMEM; + ret = reset_get_bulk(dev, &reset_bulk); + if (!ret) + reset_deassert_bulk(&reset_bulk); + host->name = dev->name; host->ioaddr = plat->hrs_addr + SDHCI_CDNS_SRS_BASE; host->ops = &sdhci_cdns_ops; -- 2.43.7
