[XS] Change in coreboot[main]: mb/google/{rex,ovis}: Decrease EPP to 45% for MTL performance expecta...

[Sukumar Ghorai (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eran Mitrani, Kapil Porwal, Paul Menzel, Subrata Banik, Tarun.

Sukumar Ghorai has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/79386?usp=email )

Change subject: mb/google/{rex,ovis}: Decrease EPP to 45% for MTL performance expectation
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Patch Set 4:

(1 comment)

Patchset:

PS4:
> > Do this recommendation only applicable for QS silicon ? […]

Configuring MSR 0x774 is applicable to all SoC variants.
- today EPP is overwrite by OS and irrespective of any vale configured by bios/coreboot.
- hence required OS changes not to overwrite the EPP when configured by bios, as in b:314275133 : need to apply the kernel change to test this coreboot change: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/5...