Attention is currently required from: Tim Wawrzynczak, Ivy Jian, Nick Vaccaro.

Tim Wawrzynczak uploaded patch set #7 to this change.

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mb/google/brya/var/agah: Add GPU power sequencing

This patch adds support for power sequencing of the Nvidia GN3050 for
agah, which uses PCH GPIOs to control the 5 power rails required for
the GPU. The GPU is power sequenced on during mainboard
initialization, then it is enumerated on the PCI bus and its resources
are assigned. This GPU will be used in a sort of "hybrid graphics"
mode, therefore during finalization, since its PCI BARs are saved into
ACPI memory and the GPU is not required upon initial boot, the GPU is
power sequenced off.

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I1072be12ef58af5859e2a2d19c4a9c1adc0b0f88
---
M src/mainboard/google/brya/variants/agah/Makefile.inc
M src/mainboard/google/brya/variants/agah/gpio.c
M src/mainboard/google/brya/variants/agah/overridetree.cb
A src/mainboard/google/brya/variants/agah/variant.c
4 files changed, 192 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/84/62384/7

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