diff options
| author | yinbo.zhu <yinbo.zhu@nxp.com> | 2017-11-08 17:09:50 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-22 15:40:12 +0100 |
| commit | 772b28fb3f5dde45186482c181acb5be861deb83 (patch) | |
| tree | f0a8ef1d474c16ee9fea5dfd808dc5e3c9211d16 | |
| parent | c95e8f5945e4162ca90cf5639d1b340bb9d89ab6 (diff) | |
mmc: sdhci-of-esdhc: fix eMMC couldn't work after kexec
commit 97618aca1440b5addc5c3d78659d3e176be23b80 upstream.
The bit eSDHC_TBCTL[TB_EN] couldn't be reset by eSDHC_SYSCTL[RSTA] which is
used to reset for all. The driver should make sure it's cleared before card
initialization, otherwise the initialization would fail.
Signed-off-by: yinbo.zhu <yinbo.zhu@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>
| -rw-r--r-- | drivers/mmc/host/sdhci-of-esdhc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index 1f424374bbbb..d74030f3bd12 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -785,6 +785,10 @@ 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; |