tree 085df262f70edf1296143f247d2b4e2ee830add4
parent 408204409b3324ae6ae7043826ee5ab7bb45bb2f
author Nico Huber <nico.huber@secunet.com> 1486120648 +0100
committer Nico Huber <nico.h@gmx.de> 1496496202 +0200

gma broxton: Implement DDI PHY power handling

DDI PHYs is a concept common to current Atom processor series. It
seems the PHYs are implemented on the same die as the graphics core
but still need to be configured separately. Based on the assumption
that we start with disabled PHYs and it was always us if they are
enabled, we only have to do a small share of what Linux' i915 does.

v2: Wait for GRC done only if we want to copy its results.

Change-Id: I1e59f80daa08dc64b8c3dff34202ace5dd4c5f73
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/18422
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>