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From ba233d60909b0b895c28f88c5714ebcb68b87617 Mon Sep 17 00:00:00 2001
From: Steve Sakoman <steve@sakoman.com>
Date: Mon, 18 Jul 2011 23:13:41 -0500
Subject: [PATCH 16/33] 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 1f938d9..ace26f7 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1542,6 +1542,9 @@ 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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