diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-of-at91.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-of-at91.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c index 7fd964256faa..d5430ed02a67 100644 --- a/drivers/mmc/host/sdhci-of-at91.c +++ b/drivers/mmc/host/sdhci-of-at91.c @@ -29,6 +29,8 @@ #include "sdhci-pltfm.h" +#define SDMMC_MC1R 0x204 +#define SDMMC_MC1R_DDR BIT(3) #define SDMMC_CACR 0x230 #define SDMMC_CACR_CAPWREN BIT(0) #define SDMMC_CACR_KEY (0x46 << 8) @@ -103,11 +105,18 @@ static void sdhci_at91_set_power(struct sdhci_host *host, unsigned char mode, sdhci_set_power_noreg(host, mode, vdd); } +void sdhci_at91_set_uhs_signaling(struct sdhci_host *host, unsigned int timing) +{ + if (timing == MMC_TIMING_MMC_DDR52) + sdhci_writeb(host, SDMMC_MC1R_DDR, SDMMC_MC1R); + sdhci_set_uhs_signaling(host, timing); +} + static const struct sdhci_ops sdhci_at91_sama5d2_ops = { .set_clock = sdhci_at91_set_clock, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_reset, - .set_uhs_signaling = sdhci_set_uhs_signaling, + .set_uhs_signaling = sdhci_at91_set_uhs_signaling, .set_power = sdhci_at91_set_power, }; |