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authorDaniel Vetter <daniel.vetter@ffwll.ch>2012-06-14 22:15:00 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-06-16 15:39:02 +0200
commit6b4e0a93ff6e45714c72bdce193f719ed94810e3 (patch)
tree0feef6b03bcc465f48d7d1e315d46b5af3246a08 /usr
parent351cfc34db8decb0c5cc1aac7cf1780a0e45c8b1 (diff)
Revert "drm/i915/dp: Use auxch precharge value of 5 everywhere"
This reverts commit 092945e11c5b84f66dd08f0b87fb729715d377bc. This commit prevents a DP screen from properly training the link. Oddly enough it works, once the machine has been warm-booted with an older kernel. According to DP docs this _should_ have been the right precharge time. Also, the commit that originally introduces this was just general snb DP enabling and didn't mention any specific reason for this special value. Whatever, trust the reporter that this makes things worse and let's just revert it. v2: Less spelling fail. Cc: Adam Jackson <ajax@redhat.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Reported-by: "Wouter M. Koolen" <W.M.Koolen-Wijkstra@cwi.nl> Buglink: https://lkml.org/lkml/2012/6/14/301 Cc: stable@vger.kernel.org (only for 3.4) Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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