[PATCH] linux-ti33x-psp 3.1: add dto patch to fix problems with various sd cards

* [PATCH] linux-ti33x-psp 3.1: add dto patch to fix problems with various sd cards
@ 2012-01-26 17:38 Koen Kooi
  2012-01-26 18:01 ` Tom Rini
  0 siblings, 1 reply; 5+ messages in thread
From: Koen Kooi @ 2012-01-26 17:38 UTC (permalink / raw)
  To: meta-ti

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
---
 ...Set-dto-to-max-value-of-14-to-avoid-SD-Ca.patch |   34 ++++++++++++++++++++
 recipes-kernel/linux/linux-ti33x-psp_3.1.bb        |    3 +-
 2 files changed, 36 insertions(+), 1 deletions(-)
 create mode 100644 recipes-kernel/linux/linux-ti33x-psp-3.1/0038-omap_hsmmc-Set-dto-to-max-value-of-14-to-avoid-SD-Ca.patch

diff --git a/recipes-kernel/linux/linux-ti33x-psp-3.1/0038-omap_hsmmc-Set-dto-to-max-value-of-14-to-avoid-SD-Ca.patch b/recipes-kernel/linux/linux-ti33x-psp-3.1/0038-omap_hsmmc-Set-dto-to-max-value-of-14-to-avoid-SD-Ca.patch
new file mode 100644
index 0000000..4fe037e
--- /dev/null
+++ b/recipes-kernel/linux/linux-ti33x-psp-3.1/0038-omap_hsmmc-Set-dto-to-max-value-of-14-to-avoid-SD-Ca.patch
@@ -0,0 +1,34 @@
+From d12058d27dddf60b36f5b2142ee999e55bddfff6 Mon Sep 17 00:00:00 2001
+From: Steve Sakoman <steve@sakoman.com>
+Date: Mon, 18 Jul 2011 23:13:41 -0500
+Subject: [PATCH 38/38] 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 35505bd..0be77ec 100644
+--- a/drivers/mmc/host/omap_hsmmc.c
++++ b/drivers/mmc/host/omap_hsmmc.c
+@@ -1574,6 +1574,9 @@ 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);
+-- 
+1.7.7.5
+
diff --git a/recipes-kernel/linux/linux-ti33x-psp_3.1.bb b/recipes-kernel/linux/linux-ti33x-psp_3.1.bb
index 84e5c3b..591731c 100644
--- a/recipes-kernel/linux/linux-ti33x-psp_3.1.bb
+++ b/recipes-kernel/linux/linux-ti33x-psp_3.1.bb
@@ -11,7 +11,7 @@ MULTI_CONFIG_BASE_SUFFIX = ""
 
 BRANCH = "v3.1-meta-ti-r1r+gitr1d84d8853fa30cf3db2571a5aec572accca4e29d"
 SRCREV = "1d84d8853fa30cf3db2571a5aec572accca4e29d"
-MACHINE_KERNEL_PR_append = "k+gitr${SRCREV}"
+MACHINE_KERNEL_PR_append = "l+gitr${SRCREV}"
 
 COMPATIBLE_MACHINE = "(ti33x)"
 
@@ -62,6 +62,7 @@ PATCHES_OVER_PSP = " \
 	file://0035-beaglebone-add-structs-for-DVI-cape-LEDs.patch\
 	file://0036-beaglebone-update-LCD-cape-partnumber.patch \
     file://0037-beaglebone-compare-complete-partnumber-not-the-first.patch \
+	file://0038-omap_hsmmc-Set-dto-to-max-value-of-14-to-avoid-SD-Ca.patch \
 	"
 
 SRC_URI += "${@base_contains('DISTRO_FEATURES', 'tipspkernel', "", "${PATCHES_OVER_PSP}", d)}"
-- 
1.7.2.5



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