linux-omap: Fix MMC timeout Errors

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 proposed by Sukumar Ghoral of TI.

Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

2 files changed, 35 insertions, 1 deletions

diff --git a/recipes-kernel/linux/linux-omap-2.6.39/beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch b/recipes-kernel/linux/linux-omap-2.6.39/beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch
new file mode 100644
index 00000000..8cd314c6
--- /dev/null
+++ b/recipes-kernel/linux/linux-omap-2.6.39/beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch
@@ -0,0 +1,33 @@
+From bd0b2f97c48aa6aac0c6a494f1c6ba5af5de486b Mon Sep 17 00:00:00 2001
+From: Steve Sakoman <steve@sakoman.com>
+Date: Mon, 18 Jul 2011 23:13:41 -0500
+Subject: [PATCH] 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 files changed, 3 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
+index 9646a75..7443647 100644
+--- a/drivers/mmc/host/omap_hsmmc.c
++++ b/drivers/mmc/host/omap_hsmmc.c
+@@ -1049,6 +1049,9 @@ static void set_data_timeout(struct omap_hsmmc_host *host,
+                        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);
+-- 
+1.7.0.4
+
diff --git a/recipes-kernel/linux/linux-omap_2.6.39.bb b/recipes-kernel/linux/linux-omap_2.6.39.bb
index c92846d7..a22e81f4 100644
--- a/recipes-kernel/linux/linux-omap_2.6.39.bb
+++ b/recipes-kernel/linux/linux-omap_2.6.39.bb
@@ -7,7 +7,7 @@ COMPATIBLE_MACHINE = "(beagleboard)"
 
 # The main PR is now using MACHINE_KERNEL_PR, for omap3 see conf/machine/include/omap3.inc
 SRCREV_pn-${PN} = "v2.6.39"
-MACHINE_KERNEL_PR_append = "n"
+MACHINE_KERNEL_PR_append = "o"
 
 FILESPATHPKG_prepend = "linux-omap-2.6.39:"
 
@@ -54,6 +54,7 @@ SRC_URI_append = " \
            file://beagle/0004-OMAP3-beagle-add-regulators-for-camera-interface.patch \
            file://beagle/0005-OMAP3-beagle-HACK-add-in-1GHz-OPP.patch \
            file://beagle/0006-OMAP3-BEAGLE-fix-RTC.patch \
+           file://beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch \
            \
            file://camera/0001-Add-driver-for-Aptina-Micron-mt9p031-sensor.patch \
            file://camera/0002-v4l-Add-mt9v032-sensor-driver.patch \