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mb/google/nissa/var/rull: Configure Acoustic noise mitigation

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Follow the power team’s recommendation:
- Enable Acoustic noise mitigation
- Set slow slew rate VCCIA and VCCGT to SLEW_FAST_8
- Set FastPkgCRampDisable VCCIA and VCCGT to "true"

BUG=b:380384127
TEST=built firmware and verified by power team, and noise pass

Change-Id: Ib7f60f1248c6b46f4f9bac1731be4f0396766ae2
Signed-off-by: Rui Zhou <zhourui@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85798
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
This commit is contained in:
Rui Zhou 2024-12-30 15:00:59 +08:00 • committed by Elyes Haouas
commit a8b4ee246d
1 changed files with 7 additions and 0 deletions
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7
src/mainboard/google/brya/variants/rull/overridetree.cb
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@ -12,6 +12,13 @@ fw_config
end
chip soc/intel/alderlake
# Acoustic settings
register "acoustic_noise_mitigation" = "1"
register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_8"
register "slow_slew_rate[VR_DOMAIN_GT]" = "SLEW_FAST_8"
register "fast_pkg_c_ramp_disable[VR_DOMAIN_IA]" = "true"
register "fast_pkg_c_ramp_disable[VR_DOMAIN_GT]" = "true"
register "sagv" = "SaGv_Enabled"
# EMMC Tx CMD Delay