[XS] Change in coreboot[main]: mb/google/{rex,ovis}: epp set to 45% for mtl performance expectation

[Sukumar Ghorai (Code Review)]

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

Hello Dinesh Gehlot, Eran Mitrani, Kapil Porwal, Subrata Banik, Tarun, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/79386?usp=email

to look at the new patch set (#2).

Change subject: mb/google/{rex,ovis}: epp set to 45% for mtl performance expectation
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mb/google/{rex,ovis}: epp set to 45% for mtl performance expectation

The default EPP is set at 50%, which is deemed insufficiently
aggressive for meeting the MTL performance expectations in
balance_performance mode.
  #cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_preference
  balance_performance
  # iotools rdmsr 0 0x774
  0x0000000080003f06
EPP=45% is giving the required performance in MTL.

Change-Id: I1953994cdb4e9363fdd4b4728e3e5236276c06c8
Signed-off-by: Sukumar Ghorai 
---
M src/mainboard/google/rex/variants/baseboard/ovis/devicetree.cb
M src/mainboard/google/rex/variants/baseboard/rex/devicetree.cb
2 files changed, 8 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/86/79386/2