mmc: sdhci-esdhc-imx: enable SDR50 tuning for imx6q/dl

The imx6q/dl supports SDR50 tunning, enable it for a better timing
on SDR50 mode.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 260a81f..1d1fcb2 100644 (file)
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -257,7 +257,8 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg)
                        else
                                /* imx6q/dl does not have cap_1 register, fake one */
                                val = SDHCI_SUPPORT_DDR50 | SDHCI_SUPPORT_SDR104
-                                       | SDHCI_SUPPORT_SDR50;
+                                       | SDHCI_SUPPORT_SDR50
+                                       | SDHCI_USE_SDR50_TUNING;
                }
        }