linux-omap 2.6.29: add more dss2 patches, should solve problems when using u-boot splash

1 files changed, 41 insertions, 0 deletions

diff --git a/recipes/linux/linux-omap-2.6.29/dss2/0053-DSS2-disable-LCD-DIGIT-before-resetting-DSS.patch b/recipes/linux/linux-omap-2.6.29/dss2/0053-DSS2-disable-LCD-DIGIT-before-resetting-DSS.patch
new file mode 100644
index 0000000000..f591fb700a
--- /dev/null
+++ b/recipes/linux/linux-omap-2.6.29/dss2/0053-DSS2-disable-LCD-DIGIT-before-resetting-DSS.patch
@@ -0,0 +1,41 @@
+From c7ce3c5e9f7e28900b8ea9c3e1afe41dcdc0863d Mon Sep 17 00:00:00 2001
+From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+Date: Thu, 23 Apr 2009 10:46:53 +0300
+Subject: [PATCH] DSS2: disable LCD & DIGIT before resetting DSS
+
+This seems to fix the synclost problem that we get, if the bootloader
+starts the DSS and the kernel resets it.
+---
+ drivers/video/omap2/dss/dss.c |    8 +++++---
+ 1 files changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
+index adc1f34..aab9758 100644
+--- a/drivers/video/omap2/dss/dss.c
++++ b/drivers/video/omap2/dss/dss.c
+@@ -285,6 +285,11 @@ int dss_init(bool skip_init)
+ 	}
+ 
+ 	if (!skip_init) {
++		/* disable LCD and DIGIT output. This seems to fix the synclost
++		 * problem that we get, if the bootloader starts the DSS and
++		 * the kernel resets it */
++		omap_writel(omap_readl(0x48050440) & ~0x3, 0x48050440);
++
+ 		/* We need to wait here a bit, otherwise we sometimes start to
+ 		 * get synclost errors, and after that only power cycle will
+ 		 * restore DSS functionality. I have no idea why this happens.
+@@ -294,10 +299,7 @@ int dss_init(bool skip_init)
+ 		msleep(50);
+ 
+ 		_omap_dss_reset();
+-
+ 	}
+-	else
+-		printk("DSS SKIP RESET\n");
+ 
+ 	/* autoidle */
+ 	REG_FLD_MOD(DSS_SYSCONFIG, 1, 0, 0);
+-- 
+1.5.6.5
+