A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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mmc: sdhci-esdhc-imx: do not touch other bit when config DTOCV

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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 <[email protected]>
Acked-by: Dong Aisheng <[email protected]>
Acked-by: Adrian Hunter <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
This commit is contained in:
Haibo Chen 2016-08-15 16:19:38 +08:00 • committed by Ulf Hansson
commit a215186d7f
1 changed files with 3 additions and 1 deletions
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4
drivers/mmc/host/sdhci-esdhc-imx.c
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@ -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);
}