mxcmmc: decrease minimum frequency to make MMC cards work

This is a temporary workaround until the MMC stack can be fixed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>

diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index b4a615c..5950102 100644 (file)
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -724,7 +724,9 @@ static int mxcmci_probe(struct platform_device *pdev)
                goto out_clk_put;
        }
 
-       mmc->f_min = clk_get_rate(host->clk) >> 7;
+       mmc->f_min = clk_get_rate(host->clk) >> 16;
+       if (mmc->f_min < 400000)
+               mmc->f_min = 400000;
        mmc->f_max = clk_get_rate(host->clk) >> 1;
 
        /* recommended in data sheet */