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| author | yinbo.zhu <yinbo.zhu@nxp.com> | 2017-09-28 10:42:46 (GMT) |
|---|---|---|
| committer | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-12-12 07:32:39 (GMT) |
| commit | e51ae985273348fbaffffa58c0e3eca9a0ab773e (patch) | |
| tree | e3df478c9fe9e2be8e8925236b70a2e91604fd2f | |
| parent | f0246a5e725d513c0552407f7694806fe437207c (diff) | |
| download | linux-e51ae985273348fbaffffa58c0e3eca9a0ab773e.tar.xz | |
mmc: sdhci-of-esdhc: fix eMMC couldn't work after kexec
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>
| -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 4b0f375..bfa0582 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -784,6 +784,10 @@ 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; |