mmc: sdhci-esdhc-imx: add delay between tuning cycles

It's observed that i.MX uSDHC needed delay between tuning cycles for HS200 successful tuning. This patch is to set 1ms delay for that. Signed-off-by: Haibo Chen <haibo.chen@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
mariux64 · Feb 25, 2019 · d00ab10 · d00ab10
1 parent af6a50d
commit d00ab10
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -1390,6 +1390,8 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
 	if (err)
 		goto disable_ahb_clk;
 
+	host->tuning_delay = 1;
+
 	sdhci_esdhc_imx_hwinit(host);
 
 	err = sdhci_add_host(host);