gma: Add config plus stubs for Broxton SoC
Current plan is to support all DDI outputs of Apollo Lake. This
includes one eDP (DDI A) and two fully fledged DDIs (B, C) that can
be either configured to DP 1.2 or HDMI 1.4. MIPI/DSI outputs won't
be supported for now.
Since there doesn't exist any public documentation, the code will be
solely based on analysis of Linux' i915 driver.
Everything is a stub. In the existing code, at least DDI configu-
ration will also have to be adapted.
v2: Escape hash characters in config file
Change-Id: I4a79d4531d238049ba00ab4f03e270e6b58f81ab
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/18421
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
11 files changed