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| author | Keith Packard | 2011-09-26 23:29:12 +0200 |
|---|---|---|
| committer | Keith Packard | 2011-09-28 23:08:06 +0200 |
| commit | 99eb6a01e5ac6cf28aadc64e6ff346939874dfd2 (patch) | |
| tree | 9d91704f1196bf33b62c0355c4bab61f395eab3f /kernel | |
| parent | drm/i915: Fix PCH SSC reference clock settings (diff) | |
| download | kernel-qcow2-linux-99eb6a01e5ac6cf28aadc64e6ff346939874dfd2.tar.gz kernel-qcow2-linux-99eb6a01e5ac6cf28aadc64e6ff346939874dfd2.tar.xz kernel-qcow2-linux-99eb6a01e5ac6cf28aadc64e6ff346939874dfd2.zip | |
drm/i915: Use CK505 as non-SSC source where available
When trying to use SSC on Ibex Peak without CK505, any non-SSC outputs
(like VGA or TV) get broken. So, do not use SSC on Ibex Peak unless
there is a CK505 available (as specified by the VBT).
On Cougar Point, all clocking is internal, so SSC can always be used,
and there will never be a CK505 available.
This eliminates VGA shimmer on some Ironlake machines which have a
CK505 clock source.
References: https://bugzilla.kernel.org/show_bug.cgi?id=21742
References: https://bugs.freedesktop.org/show_bug.cgi?id=38750
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions