commit 8be0ba3aeae220a9c537c3a6566bdec0e7cefe72
author Haibo Chen <haibo.chen@nxp.com> Fri Feb 11 19:16:57 2022 +0800
committer Stefano Babic <sbabic@denx.de> Sat Feb 19 14:46:54 2022 +0100
tree a20ba17b67c249e86afd13c78d6eafe231d4038c
parent 84516a786f420137bb7fc64f8a066800dd3e0993

mmc: fsl_esdhc_imx: correct the actual card clock

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@nxp.com>
Reviewed-by: Marek Vasut <marex@denx.de>

drivers/mmc/fsl_esdhc_imx.c

diff --git a/drivers/mmc/fsl_esdhc_imx.c b/drivers/mmc/fsl_esdhc_imx.c
index 29a945e..697e3c6 100644
--- a/drivers/mmc/fsl_esdhc_imx.c
+++ b/drivers/mmc/fsl_esdhc_imx.c
@@ -608,6 +608,8 @@
 	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;
 
@@ -629,7 +631,6 @@
 	else
 		esdhc_setbits32(&regs->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
 
-	mmc->clock = sdhc_clk / pre_div / div;
 	priv->clock = clock;
 }