Change in coreboot[master]: mb/google/brya: Disable c1-state auto demotion for Brya & Brask

[Maulik V Vaghela (Code Review)]

Attention is currently required from: Vinay Kumar, Tim Wawrzynczak.
Hello Felix Singer, build bot (Jenkins), Subrata Banik, Tim Wawrzynczak,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/62630

to look at the new patch set (#7).

Change subject: mb/google/brya: Disable c1-state auto demotion for Brya & Brask
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mb/google/brya: Disable c1-state auto demotion for Brya & Brask

c1-state auto demotion feature allows hardware to determine c1-state as
per platform policy. Since Brya sets performance policy to balanced from
hardware, auto demotion can be disabled without performance impact.

Also, disabling this feature results in 110 mW power savings during
video playback.

BUG=b:221876248
BRANCH=firmware-brya-14505.B
TEST=Code compiles and correct value of c1-state auto demotion is passed
to FSP. Also power and performance impact has been measure by respective
teams.

Change-Id: I41eea916cdfe4a86e4d263e3191f5cb40fa33a90
Signed-off-by: MAULIK V VAGHELA 
---
M src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb
M src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb
2 files changed, 6 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/30/62630/7