From: "yinbo.zhu" <yinbo.zhu@xxxxxxx> 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@xxxxxxx> --- drivers/mmc/host/sdhci-esdhc.h | 1 + drivers/mmc/host/sdhci-of-esdhc.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h index dfa58f8b8dfa..74b42dbc1ef6 100644 --- a/drivers/mmc/host/sdhci-esdhc.h +++ b/drivers/mmc/host/sdhci-esdhc.h @@ -60,6 +60,7 @@ /* Tuning Block Control Register */ #define ESDHC_TBCTL 0x120 #define ESDHC_TB_EN 0x00000004 +#define ESDHC_TB_DIS (0x1 << 2) /* Control Register for DMA transfer */ #define ESDHC_DMA_SYSCTL 0x40c diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index d96a057a7db8..b89de8e55330 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -783,6 +783,9 @@ 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_DIS; + 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; -- 2.14.1 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
