From d7d042e8b62d753c8b4fc4bbd1e3969448ed41a1 Mon Sep 17 00:00:00 2001 From: Haibo Chen Date: Fri, 11 Feb 2022 19:16:57 +0800 Subject: [PATCH] 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 Reviewed-by: Marek Vasut --- 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 29a945ed73..697e3c641d 100644 --- a/drivers/mmc/fsl_esdhc_imx.c +++ b/drivers/mmc/fsl_esdhc_imx.c @@ -608,6 +608,8 @@ 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; @@ -629,7 +631,6 @@ static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock) else esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN); - mmc->clock = sdhc_clk / pre_div / div; priv->clock = clock; } -- 2.39.5