drm/i915: prefer wide & slow to fast & narrow in DP configs
authorJesse Barnes <jbarnes@virtuousgeek.org>
Thu, 21 Jun 2012 22:13:50 +0000 (15:13 -0700)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Thu, 5 Jul 2012 07:56:05 +0000 (09:56 +0200)
commit2514bc510d0c3aadcc5204056bb440fa36845147
treeb4d8d8f7767445810dc16403985f70408f25bfd6
parent930ebb462422117e12b85bb5fd6548ed13d0afb5
drm/i915: prefer wide & slow to fast & narrow in DP configs

High frequency link configurations have the potential to cause trouble
with long and/or cheap cables, so prefer slow and wide configurations
instead.  This patch has the potential to cause trouble for eDP
configurations that lie about available lanes, so if we run into that we
can make it conditional on eDP.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=45801
Tested-by: peter@colberg.org
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_dp.c