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
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -724,7 +724,9 @@
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 */