[oe-commits] Joel A Fernandes : linux-omap-psp: Fix MMC timeout errors

[git version control]

Module: openembedded.git
Branch: sledz/maintenance
Commit: f07365a146b47130fd6c01aa0be49da06d43e4f0
URL:    http://git.openembedded.org/?p=openembedded.git&a=commit;h=f07365a146b47130fd6c01aa0be49da06d43e4f0

Author: Joel A Fernandes <agnel.joel at gmail.com>
Date:   Tue Jul 26 15:25:03 2011 +0000

linux-omap-psp: 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 at gmail.com>
Signed-off-by: Koen Kooi <koen at openembedded.org>
Signed-off-by: Koen Kooi <koen at dominion.thruhere.net>

---

 ...mc-Adjust-dto-to-eliminate-timeout-errors.patch |   41 ++++++++++++-------
 recipes/linux/linux-omap-psp_2.6.32.bb             |    2 +-
 2 files changed, 27 insertions(+), 16 deletions(-)

diff --git a/recipes/linux/linux-omap-psp-2.6.32/0047-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch b/recipes/linux/linux-omap-psp-2.6.32/0047-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch
index 4867d3f..8cd314c 100644
--- a/recipes/linux/linux-omap-psp-2.6.32/0047-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch
+++ b/recipes/linux/linux-omap-psp-2.6.32/0047-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch
@@ -1,22 +1,33 @@
-From 26a79f408bd41ad7b4a47f2683909d3fc1575eab Mon Sep 17 00:00:00 2001
+From bd0b2f97c48aa6aac0c6a494f1c6ba5af5de486b Mon Sep 17 00:00:00 2001
 From: Steve Sakoman <steve at sakoman.com>
-Date: Wed, 12 Jan 2011 05:54:55 -0800
-Subject: [PATCH] omap: mmc: Adjust dto to eliminate timeout errors
+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
 
-A number of SD card types were experiencing timeout errors.  This
-could also lead to data corruption in some cases.
+This fixes MMC errors due to timeouts on certain SD Cards following suggestions
+to set dto to 14 by Jason Kridner and Steven Kipisz
 
-This fix proposed by Sukumar Ghoral of TI.
+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..ef458d6 100644
+index 9646a75..7443647 100644
 --- a/drivers/mmc/host/omap_hsmmc.c
 +++ b/drivers/mmc/host/omap_hsmmc.c
-@@ -1032,6 +1032,7 @@ static void set_data_timeout(struct omap_hsmmc_host *host,
- 	cycle_ns = 1000000000 / (clk_get_rate(host->fclk) / clkd);
- 	timeout = timeout_ns / cycle_ns;
- 	timeout += timeout_clks;
-+	timeout *= 2;
- 	if (timeout) {
- 		while ((timeout & 0x80000000) == 0) {
- 			dto += 1;
+@@ -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/linux/linux-omap-psp_2.6.32.bb b/recipes/linux/linux-omap-psp_2.6.32.bb
index 7a0797a..06904a9 100644
--- a/recipes/linux/linux-omap-psp_2.6.32.bb
+++ b/recipes/linux/linux-omap-psp_2.6.32.bb
@@ -9,7 +9,7 @@ COMPATIBLE_MACHINE = "am3517-crane|beagleboard|omap3evm|am3517-evm|dm37x-evm|am3
 SRCREV = "5fc29e7b2a76a64a739f857858ef0b98294aa155"
 
 # The main PR is now using MACHINE_KERNEL_PR, for omap3 see conf/machine/include/omap3.inc
-MACHINE_KERNEL_PR_append = "f+gitr${SRCREV}"
+MACHINE_KERNEL_PR_append = "g+gitr${SRCREV}"
 
 SRC_URI = "git://arago-project.org/git/projects/linux-omap3.git;protocol=http;branch=master \
            file://0001-Added-Crane-Board-support.patch \