[coreboot-gerrit] Change in coreboot[master]: nb/intel/haswell/gma: Support boards that have DDI E connected
Tristan Corrick (Code Review)
gerrit at coreboot.org
Wed Oct 31 15:40:16 CET 2018
Hello build bot (Jenkins), Nico Huber,
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/29385
to look at the new patch set (#3).
Change subject: nb/intel/haswell/gma: Support boards that have DDI E connected
......................................................................
nb/intel/haswell/gma: Support boards that have DDI E connected
On an ASRock H81M-HDS neither libgfxinit, nor Linux, is able to
initialise the display when lanes are not configured to be shared
between DDI A and DDI E.
Intel's reference manual [1] states that the decision to share lanes
between DDI A and DDI E is "based on board configuration". Hence, add a
new field to the devicetree that boards can set. All existing Haswell
boards have this unset, thus taking a value of 0, so there is no change
to existing behaviour.
[1]: Intel Open Source Graphics Programmer's Reference Manual (PRM)
Volume 2c: Command Reference: Registers (Haswell)
https://01.org/linuxgraphics/documentation/hardware-specification-prms/2013-intel-core-processor-family
Change-Id: I6f7832293215d2b53e31b0a5c985e6098eb72f1b
Signed-off-by: Tristan Corrick <tristan at corrick.kiwi>
---
M src/northbridge/intel/haswell/chip.h
M src/northbridge/intel/haswell/gma.c
2 files changed, 6 insertions(+), 1 deletion(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/85/29385/3
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I6f7832293215d2b53e31b0a5c985e6098eb72f1b
Gerrit-Change-Number: 29385
Gerrit-PatchSet: 3
Gerrit-Owner: Tristan Corrick <tristan at corrick.kiwi>
Gerrit-Reviewer: Nico Huber <nico.h at gmx.de>
Gerrit-Reviewer: Tristan Corrick <tristan at corrick.kiwi>
Gerrit-Reviewer: build bot (Jenkins) <no-reply at coreboot.org>
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