Attention is currently required from: Eran Mitrani, Kapil Porwal, Subrata Banik, Tarun.
Hello Eran Mitrani, Kapil Porwal, Subrata Banik, Tarun,
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/78250?usp=email
to look at the new patch set (#2).
Change subject: mb/google/{rex,ovis}: Disable package C-state auto demotion for rex & ovis ......................................................................
mb/google/{rex,ovis}: Disable package C-state auto demotion for rex & ovis
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: Ia4cf4a7cb6bd5eaae26197b55f9385c078960d7b Signed-off-by: Sukumar Ghorai sukumar.ghorai@intel.com --- M src/mainboard/google/rex/variants/baseboard/ovis/devicetree.cb M src/mainboard/google/rex/variants/baseboard/rex/devicetree.cb M src/soc/intel/meteorlake/chip.h M src/soc/intel/meteorlake/fsp_params.c 4 files changed, 9 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/50/78250/2