mmc: omap_hsmmc: correct max value of clkd

clock divisor can take a max value of 1023.  Update code so that card
init can be handled at f_min even at higher IP clock frequencies from
which clock to the card is derived.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 4d1170fa34c0..fbd2d89017a9 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -75,6 +75,7 @@
 #define ICE                     0x1
 #define ICS                     0x2
 #define CEN                     (1 << 2)
+#define CLKD_MAX                0x3FF           /* max clock divisor: 1023 */
 #define CLKD_MASK               0x0000FFC0
 #define CLKD_SHIFT              6
 #define DTO_MASK                0x000F0000
@@ -497,8 +498,8 @@ static u16 calc_divisor(struct omap_hsmmc_host *host, struct mmc_ios *ios)
 
         if (ios->clock) {
                 dsor = DIV_ROUND_UP(clk_get_rate(host->fclk), ios->clock);
-                if (dsor > 250)
-                        dsor = 250;
+                if (dsor > CLKD_MAX)
+                        dsor = CLKD_MAX;
         }
 
         return dsor;