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

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Set slow_slew_rate for VCCIA and VCCGT to SLEW_FAST_8 to improve EE
noise for meliks.

BRANCH=nissa
TEST=built firmware and got pass for EE noise test.

Change-Id: Ie1a9147736e3effa465134854ecd34554bee6906
Signed-off-by: Seunghwan Kim <sh_.kim@samsung.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88126
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward Doan <edoan@chromium.org>
This commit is contained in:
Seunghwan Kim 2025-06-17 16:58:01 +09:00 • committed by Matt DeVillier
commit 68ede7b860
1 changed files with 7 additions and 0 deletions
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7
src/mainboard/google/brya/variants/meliks/overridetree.cb
View file

@ -7,6 +7,13 @@ chip soc/intel/alderlake
register "sagv" = "SaGv_Enabled"
# 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]" = "1"
register "fast_pkg_c_ramp_disable[VR_DOMAIN_GT]" = "1"
# SOC Aux orientation override:
# This is a bitfield that corresponds to up to 4 TCSS ports.
# Bits (0,1) allocated for TCSS Port1 configuration and Bits (2,3)for TCSS Port2.