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From ec0ef23dd64de808f7e9d827ee82ac4734d8a003 Mon Sep 17 00:00:00 2001
From: Steve Sakoman <steve@sakoman.com>
Date: Mon, 18 Jul 2011 23:13:41 -0500
Subject: [PATCH 16/79] omap_hsmmc: Set dto to max value of 14 to avoid SD
Card timeouts
This fixes MMC errors due to timeouts on certain SD Cards following suggestions
to set dto to 14 by Jason Kridner and Steven Kipisz
Details of the issue:
http://talk.maemo.org/showthread.php?p=1000707#post1000707
This fix was originally proposed by Sukumar Ghoral of TI.
---
drivers/mmc/host/omap_hsmmc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 22da8f2..adbc4d1 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1554,6 +1554,9 @@ static void set_data_timeout(struct omap_hsmmc_host *host)
/* Use the maximum timeout value allowed in the standard of 14 or 0xE */
dto = 14;
+ /* Set dto to max value of 14 to avoid SD Card timeouts */
+ dto = 14;
+
reg &= ~DTO_MASK;
reg |= dto << DTO_SHIFT;
OMAP_HSMMC_WRITE(host->base, SYSCTL, reg);
--
1.7.10
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