mirrors/meta-ti
1
0
Fork 0
mirror of https://git.yoctoproject.org/meta-ti synced 2026-01-12 01:20:20 +00:00
Code Issues Projects Releases Wiki Activity

linux-omap: Fix MMC timeout Errors

Browse Source 
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>
This commit is contained in:
Joel A Fernandes
2011-07-26 07:21:10 +00:00
committed by Koen Kooi
parent 410d3fe6ac
commit 23553ed7e2
2 changed files with 35 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
recipes-kernel/linux/linux-omap-2.6.39/beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch Normal file
View File

@@ -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

3
recipes-kernel/linux/linux-omap_2.6.39.bb
View File

@@ -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 \