Although the HC supports HS200 (eMMC) the caps2 are always zero; this means that
no way to use the super speed mode (when init the card).
If the HC support SDR104, for SD3.0, so it also supports HS200 for eMMC and
this patch just sets the MMC_CAP2_HS200 in the host caps2 field.
Reported-by: Youssef Triki <youssef.triki@xxxxxx>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@xxxxxx>
---
drivers/mmc/host/sdhci.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 2ea429c..5626f5f 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2962,9 +2962,13 @@ int sdhci_add_host(struct sdhci_host *host)
mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25;
/* SDR104 supports also implies SDR50 support */
- if (caps[1] & SDHCI_SUPPORT_SDR104)
+ if (caps[1] & SDHCI_SUPPORT_SDR104) {
mmc->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50;
- else if (caps[1] & SDHCI_SUPPORT_SDR50)
+ /* SD3.0: SDR104 is supported so from eMMC caps2
+ * can be promoted to support HS200.
+ */
+ mmc->caps2 |= MMC_CAP2_HS200;
+ } else if (caps[1] & SDHCI_SUPPORT_SDR50)
mmc->caps |= MMC_CAP_UHS_SDR50;
if (caps[1] & SDHCI_SUPPORT_DDR50)
--
1.7.4.4
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
