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mb/google/fatcat: Set CPU ratio override in devicetree

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Configure "cpu_ratio_override" to 0x20 (32) for the Fatcat baseboard.
This ensures the Panther Lake SoC initializes with the correct
base frequency ratio to meet the performance and thermal targets
defined for this hardware revision.

BUG=none
BRANCH=none
TEST=Build and boot Fatcat; verify CPU base frequency has updated.

Change-Id: I7ea6c7dccaf731bab1256b3297d83518ceea532c
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91648
Reviewed-by: Pranava Y N <pranavayn@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Subrata Banik 2026-03-11 14:16:11 +05:30
commit 07e4cc0cc3
1 changed files with 3 additions and 0 deletions
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3
src/mainboard/google/fatcat/variants/baseboard/fatcat/devicetree.cb
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@ -62,6 +62,9 @@ chip soc/intel/pantherlake
# Setting TCC of 100C = Tj max (110) - TCC_Offset (10)
register "tcc_offset" = "10"
# CPU Ratio Override
register "cpu_ratio_override" = "0x20"
# Enable Energy Reporting
register "pch_pm_energy_report_enable" = "true"