diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 7e1fd557109c..9f53634aa411 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -191,9 +191,9 @@
 				 STS2_AC12BSYTO | STS2_RSPBSYTO |	\
 				 STS2_AC12RSPTO | STS2_RSPTO)
 
-#define CLKDEV_EMMC_DATA	52000000 /* 52MHz */
-#define CLKDEV_MMC_DATA		20000000 /* 20MHz */
-#define CLKDEV_INIT		400000   /* 400 KHz */
+#define CLKDEV_EMMC_DATA	52000000 /* 52 MHz */
+#define CLKDEV_MMC_DATA		20000000 /* 20 MHz */
+#define CLKDEV_INIT		400000   /* 400 kHz */
 
 enum sh_mmcif_state {
 	STATE_IDLE,