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[PATCHv3,3/9] mmc: dw_mmc: change the DW_MCI_FREQ_MIN from 400K to 100K

Message ID 20161117074041.8641-4-jh80.chung@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jaehoon Chung Nov. 17, 2016, 7:40 a.m. UTC 
If there is no property "clock-freq-min-max", mmc->f_min should be set
to 400K by default. But Some SoC can be used 100K.
When 100K is used, MMC core will try to check from 400K to 100K.

Reported-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
---
 drivers/mmc/host/dw_mmc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 6adefb8..d5f0384 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -54,7 +54,7 @@ 
 #define DW_MCI_DMA_THRESHOLD	16
 
 #define DW_MCI_FREQ_MAX	200000000	/* unit: HZ */
-#define DW_MCI_FREQ_MIN	400000		/* unit: HZ */
+#define DW_MCI_FREQ_MIN	100000		/* unit: HZ */
 
 #define IDMAC_INT_CLR		(SDMMC_IDMAC_INT_AI | SDMMC_IDMAC_INT_NI | \
 				 SDMMC_IDMAC_INT_CES | SDMMC_IDMAC_INT_DU | \