From: BOUGH CHEN <haibo.chen@nxp.com>
Date: Fri, 28 Dec 2018 08:35:46 +0000 (+0000)
Subject: mmc: sdhci-esdhc-imx: add delay between tuning cycles
X-Git-Tag: v5.1-rc1~184^2~63
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=d00ab1010c2e8e7e710697c39fb9b7e4fa7dd9c1;p=uclinux-h8%2Flinux.git

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>
---

diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 2e50e71cdae5..16b2840bc05a 100644
--- 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);