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* [PATCH] mmc: sdhci-esdhc-imx: do not touch other bit when config DTOCV
@ 2016-08-15  8:19 Haibo Chen
  2016-08-16  7:30 ` Dong Aisheng
  2016-08-22 13:40 ` Ulf Hansson
  0 siblings, 2 replies; 4+ messages in thread
From: Haibo Chen @ 2016-08-15  8:19 UTC (permalink / raw)
  To: adrian.hunter, ulf.hansson, aisheng.dong, linux-mmc; +Cc: haibo.chen

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>
---
 drivers/mmc/host/sdhci-esdhc-imx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 99e0b33..437c448 100644
--- 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);
 }
 
-- 
1.9.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2016-08-22 13:40 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-08-15  8:19 [PATCH] mmc: sdhci-esdhc-imx: do not touch other bit when config DTOCV Haibo Chen
2016-08-16  7:30 ` Dong Aisheng
2016-08-18 12:49   ` Adrian Hunter
2016-08-22 13:40 ` Ulf Hansson

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