diff mbox series

mmc: host: sdhci-esdhc-imx: reset usdhc before sending tuning command for manual tuning method

Message ID 1596714504-16313-1-git-send-email-haibo.chen@nxp.com
State New
Headers show
Series mmc: host: sdhci-esdhc-imx: reset usdhc before sending tuning command for manual tuning method | expand

Commit Message

Bough Chen Aug. 6, 2020, 11:48 a.m. UTC 
From: Haibo Chen <haibo.chen@nxp.com>

According to IC suggestion, everytime before sending the tuning command,
need to reset the usdhc, so to reset the tuning circuit, to let every
tuning command work well for the manual tuning method. For standard
tuning method, IC already add the reset operation in the logic.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
---
 drivers/mmc/host/sdhci-esdhc-imx.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index a76b4513fbec..e4694eb1b914 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -990,6 +990,7 @@  static void esdhc_prepare_tuning(struct sdhci_host *host, u32 val)
 
 	/* FIXME: delay a bit for card to be ready for next tuning due to errors */
 	mdelay(1);
+	sdhci_reset(host, SDHCI_RESET_ALL);
 
 	reg = readl(host->ioaddr + ESDHC_MIX_CTRL);
 	reg |= ESDHC_MIX_CTRL_EXE_TUNE | ESDHC_MIX_CTRL_SMPCLK_SEL |