From f2bc600008bd6f7f5d0b6b56238d14f95cd454d2 Mon Sep 17 00:00:00 2001
From: "yinbo.zhu" <yinbo.zhu@nxp.com>
Date: Fri, 1 Dec 2017 15:09:34 +0800
Subject: [PATCH] mmc: sdhci-of-esdhc: fix the mmc error after sleep on ls1046ardb
Git-commit: f2bc600008bd6f7f5d0b6b56238d14f95cd454d2
Patch-mainline: v4.16-rc1
References: bsc#1051510
When system wakes up from sleep on ls1046ardb, the SD operation fails
with mmc error messages since ESDHC_TB_EN bit couldn't be cleaned by
eSDHC_SYSCTL[RSTA]. It's proper to clean this bit in esdhc_reset()
rather than in probe.
Signed-off-by: yinbo.zhu <yinbo.zhu@nxp.com>
Acked-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/mmc/host/sdhci-of-esdhc.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index d74030f3bd12..4ffa6b173a21 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -589,10 +589,18 @@ static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
static void esdhc_reset(struct sdhci_host *host, u8 mask)
{
+ u32 val;
+
sdhci_reset(host, mask);
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
+
+ if (mask & SDHCI_RESET_ALL) {
+ val = sdhci_readl(host, ESDHC_TBCTL);
+ val &= ~ESDHC_TB_EN;
+ sdhci_writel(host, val, ESDHC_TBCTL);
+ }
}
/* The SCFG, Supplemental Configuration Unit, provides SoC specific
@@ -785,10 +793,6 @@ static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host)
pltfm_host = sdhci_priv(host);
esdhc = sdhci_pltfm_priv(pltfm_host);
- val = sdhci_readl(host, ESDHC_TBCTL);
- val &= ~ESDHC_TB_EN;
- sdhci_writel(host, val, ESDHC_TBCTL);
-
host_ver = sdhci_readw(host, SDHCI_HOST_VERSION);
esdhc->vendor_ver = (host_ver & SDHCI_VENDOR_VER_MASK) >>
SDHCI_VENDOR_VER_SHIFT;
--
2.18.0