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Diffstat (limited to 'recipes/linux/linux-omap-pm-2.6.29/dss2/0053-DSS2-disable-LCD-DIGIT-before-resetting-DSS.patch')
-rw-r--r--recipes/linux/linux-omap-pm-2.6.29/dss2/0053-DSS2-disable-LCD-DIGIT-before-resetting-DSS.patch41
1 files changed, 41 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-pm-2.6.29/dss2/0053-DSS2-disable-LCD-DIGIT-before-resetting-DSS.patch b/recipes/linux/linux-omap-pm-2.6.29/dss2/0053-DSS2-disable-LCD-DIGIT-before-resetting-DSS.patch
new file mode 100644
index 0000000000..38d162d024
--- /dev/null
+++ b/recipes/linux/linux-omap-pm-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 53/69] 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);
+--
+1.6.2.4
+