From: Stéphane Marchesin <marcheu@xxxxxxxxxxxx>
This is basically increasing the delay added by commit:
commit 1d20c4fb51f18461f385ab7f039f695d37b15958
Author: Stéphane Marchesin <marcheu@xxxxxxxxxxxx>
Date: Wed Jun 26 15:17:11 2013 -0700
CHROMIUM: drm/i915: Work around PPT chipsets wakeup delays
As it seems the previous delay wasn't enough.
BUG=chrome-os-partner:21306
TEST=still works on parrot, but couldn't repro the original bug
Change-Id: I08d79f41ce1ddf0b6bcd0c620f19f7eb6dbe86c0
Reviewed-on: https://gerrit.chromium.org/gerrit/63399
Tested-by: Stéphane Marchesin <marcheu@xxxxxxxxxxxx>
Reviewed-by: Sonny Rao <sonnyrao@xxxxxxxxxxxx>
Commit-Queue: Mohammed Habibulla <moch@xxxxxxxxxxxx>
Reviewed-by: Mohammed Habibulla <moch@xxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c933bfa..d13e3a9 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4837,10 +4837,10 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
/*
* On resume, the PPT PCH doesn't seem to work right away, and
* sometimes ignores register read/writes until it's completely up.
- * Waiting 30ms seems to be long enough to avoid this.
+ * Waiting 60ms seems to be long enough to avoid this.
*/
if (dev_priv->pch_id == INTEL_PCH_PPT_DEVICE_ID_TYPE)
- msleep(30);
+ msleep(60);
}
--
1.8.3.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
