[XS] Change in coreboot[main]: mb/intel/mtlrvp: Disable package C-state auto demotion

[Sukumar Ghorai (Code Review)]

Sukumar Ghorai has uploaded a new patch set (#2). ( https://review.coreboot.org/c/coreboot/+/78278?usp=email )

Change subject: mb/intel/mtlrvp: Disable package C-state auto demotion
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mb/intel/mtlrvp: Disable package C-state auto demotion

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

Also, disabling this feature results soc to enter below PC8 state and
additional power savings ~30mW in Local-Video-Playback scenario.

Change-Id: I6ff408280178a24686180f72f79522d2741607a1
Signed-off-by: Sukumar Ghorai 
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M src/mainboard/intel/mtlrvp/variants/baseboard/mtlrvp_p/devicetree.cb
1 file changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/78/78278/2