tree d9d4fa4012d8502218bb2a3283fb9e3f2cd26db7
parent 3d06de825053c45f9fdb413b72f3174809533a51
author Nico Huber <nico.h@gmx.de> 1527551066 +0200
committer Nico Huber <nico.h@gmx.de> 1528058016 +0000

gma hsw transcoder: Choose PDW path for scaling on DDI A

If scaling is required, always drive DDI A through the Power Down Well
(PDW) path. If not, keep the current "always on" path to allow power
saving.

Hopefully, this also enables us to use the eDP in legacy VGA text mode.

Change-Id: Ia9135d253083d363872c7cf0b3e2b5b69ba0831f
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/26664
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>