From: Ville Syrjälä Date: Fri, 27 Jun 2014 16:49:57 +0000 (+0300) Subject: drm/i915: Hack to tie both common lanes together on chv X-Git-Tag: fixes-against-v3.18-rc2~73^2~78^2~8 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3dd7b97458e8aa2d8985b46622d226fa635071e7;p=pandora-kernel.git drm/i915: Hack to tie both common lanes together on chv It looks like frobbing the cmnreset line on pne PHY disturbs the other PHY on chv. The result is a black screen. On HDMI it's just a flash of black, but DP usually falls over and can't get back up. As a workaround set up the power domains so that both common lane wells power up and down together. I also tried leaving the cmnreset deasserted even the if the power well goes down but that didn't seem acceptable to the PHY. Reviewed-by: Rafael Barbalho Signed-off-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- Reading git-diff-tree failed