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mb/google/fatcat: Disable package c-state auto-demotion

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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.

TEST=Build fatcat and check the platform boots without an issue.

Change-Id: I01f2cb8ac1093ae98cc076e35ad1924baa53aa59
Signed-off-by: Sukumar Ghorai <sukumar.ghorai@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84956
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jamie Ryu <jamie.m.ryu@intel.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
This commit is contained in:
Sukumar Ghorai 2024-11-01 11:09:04 -07:00 • committed by Subrata Banik
commit dbe5ba8485
1 changed files with 2 additions and 0 deletions
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src/mainboard/google/fatcat/variants/baseboard/fatcat/devicetree.cb
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@ -39,6 +39,8 @@ chip soc/intel/pantherlake
# TODO: Safe Setting. Needs to be removed later
# Disable C1 C-state auto-demotion
register "disable_c1_state_auto_demotion" = "true"
# Disable PKGC-state auto-demotion
register "disable_package_c_state_demotion" = "true"
# Enable CNVi BT
register "cnvi_bt_core" = "true"