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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
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