mmc: sdhci-esdhc-imx: do not touch other bit when config DTOCV

Now, when call esdhc_set_timeout() to set the data timeout counter value,
IPP_RST_N(bit 23) is wrongly affected. This patch add a mask to avoid this.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 99e0b33..437c448 100644 (file)
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -31,6 +31,7 @@
 #include "sdhci-pltfm.h"
 #include "sdhci-esdhc.h"
 
+#define ESDHC_SYS_CTRL_DTOCV_MASK      0x0f
 #define        ESDHC_CTRL_D3CD                 0x08
 #define ESDHC_BURST_LEN_EN_INCR                (1 << 27)
 /* VENDOR SPEC register */
@@ -937,7 +938,8 @@ static void esdhc_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)
        struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
 
        /* use maximum timeout counter */
-       sdhci_writeb(host, esdhc_is_usdhc(imx_data) ? 0xF : 0xE,
+       esdhc_clrset_le(host, ESDHC_SYS_CTRL_DTOCV_MASK,
+                       esdhc_is_usdhc(imx_data) ? 0xF : 0xE,
                        SDHCI_TIMEOUT_CONTROL);
 }