[oe] [meta-texasinstruments] [PATCH v2] linux-omap: Fix MMC timeout Errors
Joel A Fernandes
agnel.joel at gmail.com
Mon Jul 25 23:21:10 UTC 2011
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.
---
Generated a patch that applies to meta-texasinstruments as suggested by Koen in the post at [1]
Changes since earlier patch:
* Bumped PR
[1] http://www.mail-archive.com/openembedded-devel@lists.openembedded.org/msg19995.html
...mc-Adjust-dto-to-eliminate-timeout-errors.patch | 33 ++++++++++++++++++++
recipes-kernel/linux/linux-omap_2.6.39.bb | 3 +-
2 files changed, 35 insertions(+), 1 deletions(-)
create mode 100644 recipes-kernel/linux/linux-omap-2.6.39/beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch
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 0000000..8cd314c
--- /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 at 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 c92846d..a22e81f 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 \
--
1.7.0.4
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