[PATCH 3/3] mmc: fsl_esdhc_imx: correct the actual card clock

[haibo.chen at nxp.com]

From: Haibo Chen <haibo.chen at nxp.com>

The original code logic can not show the correct card clock, and also
has one risk when the div is 0. Because there is div -=1 before.

So move the operation before div -=1, and also involve ddr_pre_div
to get the correct value.

Signed-off-by: Haibo Chen <haibo.chen at nxp.com>
---
 drivers/mmc/fsl_esdhc_imx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/fsl_esdhc_imx.c b/drivers/mmc/fsl_esdhc_imx.c
index 0be7cae1e5..0ea7b0b50c 100644
--- a/drivers/mmc/fsl_esdhc_imx.c
+++ b/drivers/mmc/fsl_esdhc_imx.c
@@ -609,6 +609,8 @@ static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
 	while (sdhc_clk / (div * pre_div * ddr_pre_div) > clock && div < 16)
 		div++;
 
+	mmc->clock = sdhc_clk / pre_div / div / ddr_pre_div;
+
 	pre_div >>= 1;
 	div -= 1;
 
@@ -630,7 +632,6 @@ static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
 	else
 		esdhc_setbits32(&regs->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
 
-	mmc->clock = sdhc_clk / pre_div / div;
 	priv->clock = clock;
 }
 
-- 
2.17.1