ENGR00219191: mmc: esdhc: escape BROKEN_ADMA quirk on mx6dl TO 1.1 chips

- On mx6dl TO 1.1, adma now can work when ahb bus frequency is low like
24Mhz.
Note:
	hw issue number:TKT093233

Signed-off-by: Ryan QIAN <b32804@freescale.com>

diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 7beb8b9323bcd48daa7a18f6675184fc31d34e3f..e1736869034d327a05d49ec80c9b0fd5e330b1a4 100644 (file)
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -821,6 +821,13 @@ static int esdhc_pltfm_init(struct sdhci_host *host, struct sdhci_pltfm_data *pd
                host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK
                        | SDHCI_QUIRK_BROKEN_ADMA;
 
+       /*
+        * on mx6dl TO 1.1, ADMA can work when ahb bus frequency is low,
+        * like 24Mhz.
+        */
+       if (mx6dl_revision() >= IMX_CHIP_REVISION_1_1)
+               host->quirks &= ~SDHCI_QUIRK_BROKEN_ADMA;
+
        if (cpu_is_mx6())
                host->quirks2 |= SDHCI_QUIRK_BROKEN_AUTO_CMD23,