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mmc: sdhci-of-esdhc: fix the mmc error after sleep on ls1046ardb

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commit f2bc600008 upstream.

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>
Cc: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
yinbo.zhu 2017-12-01 15:09:34 +08:00 committed by Greg Kroah-Hartman
parent 44e47693e3
commit 9a2b3777bd
1 changed files with 8 additions and 4 deletions
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12
drivers/mmc/host/sdhci-of-esdhc.c
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@ -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;