mmc: sdhci: Enable HS400 support if available in caps
HS400 is indicated in bit63 of capability register in few IP's.
Add a quirk to check this and add HS400 to host capabilities.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 181ab9b..c6b250b 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -995,6 +995,10 @@
cfg->host_caps |= MMC_CAP(UHS_SDR50);
}
+ if ((host->quirks & SDHCI_QUIRK_CAPS_BIT63_FOR_HS400) &&
+ (caps_1 & SDHCI_SUPPORT_HS400))
+ cfg->host_caps |= MMC_CAP(MMC_HS_400);
+
if (caps_1 & SDHCI_SUPPORT_DDR50)
cfg->host_caps |= MMC_CAP(UHS_DDR50);
diff --git a/include/sdhci.h b/include/sdhci.h
index 64a3d30..70fefca 100644
--- a/include/sdhci.h
+++ b/include/sdhci.h
@@ -189,6 +189,7 @@
#define SDHCI_SUPPORT_SDR50 0x00000001
#define SDHCI_SUPPORT_SDR104 0x00000002
#define SDHCI_SUPPORT_DDR50 0x00000004
+#define SDHCI_SUPPORT_HS400 BIT(31)
#define SDHCI_USE_SDR50_TUNING 0x00002000
#define SDHCI_CLOCK_MUL_MASK 0x00FF0000
@@ -248,6 +249,8 @@
#define SDHCI_QUIRK_USE_WIDE8 (1 << 8)
#define SDHCI_QUIRK_NO_1_8_V (1 << 9)
#define SDHCI_QUIRK_SUPPORT_SINGLE (1 << 10)
+/* Capability register bit-63 indicates HS400 support */
+#define SDHCI_QUIRK_CAPS_BIT63_FOR_HS400 BIT(11)
/* to make gcc happy */
struct sdhci_host;