[M] Change in coreboot[main]: mb/google/brya/var/xol: Configure power limits by battery status

[SH Kim (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eric Lai, Jamie Chen, Kapil Porwal, Nick Vaccaro, Paul Menzel, SH Kim, Sumeet R Pawnikar.

Hello Dinesh Gehlot, Eric Lai, Jamie Chen, Kapil Porwal, Nick Vaccaro, Subrata Banik, Sumeet R Pawnikar, 

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

    https://review.coreboot.org/c/coreboot/+/81614?usp=email

to look at the new patch set (#4).


Change subject: mb/google/brya/var/xol: Configure power limits by battery status
......................................................................

mb/google/brya/var/xol: Configure power limits by battery status

When battery level is below critical level or battery is not present,
cpus need to run with a power optimized configuration to avoid platform
instabilities such as system power down.

This will check the current battery status and configure cpu power
limits using current PD power value.

BUG=b:328729536
BRANCH=brya
TEST=built and veified MSR PL2/PL4 values using PTAT.

Original power limit configuration for Xol:
MSR PL2: 55W, MSR PL4: 114W.

[When connected 60W adaptor without battery]
Before:
MSR PL2: 55W, MSR PL4: 114W
After:
MSR PL2: 55W, MSR PL4: 60W

[When connected 45W adaptor without battery]
Before:
MSR PL2: 55W, MSR PL4: 114W
After:
MSR PL2: 45W, MSR PL4: 45W

Change-Id: I5d71e9edde0ecbd7aaf316cd754a6ebcff9da77d
Signed-off-by: Seunghwan Kim <[e-mail]>
---
M src/mainboard/google/brya/variants/xol/Makefile.mk
A src/mainboard/google/brya/variants/xol/ramstage.c
2 files changed, 59 insertions(+), 0 deletions(-)


  git pull ssh://review.coreboot.org:29418/coreboot refs/changes/14/81614/4
-- 
To view, visit https://review.coreboot.org/c/coreboot/+/81614?usp=email
To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings

Gerrit-Project: coreboot
Gerrit-Branch: main
Gerrit-Change-Id: I5d71e9edde0ecbd7aaf316cd754a6ebcff9da77d
Gerrit-Change-Number: 81614
Gerrit-PatchSet: 4
Gerrit-Owner: SH Kim <[e-mail]>
Gerrit-Reviewer: Dinesh Gehlot <[e-mail]>
Gerrit-Reviewer: Eric Lai <[e-mail]>
Gerrit-Reviewer: Jamie Chen <[e-mail]>
Gerrit-Reviewer: Kapil Porwal <[e-mail]>
Gerrit-Reviewer: Nick Vaccaro <[e-mail]>
Gerrit-Reviewer: Subrata Banik <[e-mail]>
Gerrit-Reviewer: Sumeet R Pawnikar <[e-mail]>
Gerrit-CC: Paul Menzel <[e-mail]>
Gerrit-Attention: Eric Lai <[e-mail]>
Gerrit-Attention: Jamie Chen <[e-mail]>
Gerrit-Attention: SH Kim <[e-mail]>
Gerrit-Attention: Paul Menzel <[e-mail]>
Gerrit-Attention: Kapil Porwal <[e-mail]>
Gerrit-Attention: Dinesh Gehlot <[e-mail]>
Gerrit-Attention: Sumeet R Pawnikar <[e-mail]>
Gerrit-Attention: Nick Vaccaro <[e-mail]>
Gerrit-MessageType: newpatchset