From 9dee482a8d91e2ac1793ba97810b83912fce0d89 Mon Sep 17 00:00:00 2001 From: Kun Liu Date: Wed, 22 Jan 2025 17:47:41 +0800 Subject: [PATCH] mb/google/nissa/var/telith: Configure Acoustic noise mitigation - Set slow slew rate VCCIA and VCCGT to SLEW_FAST_4 BUG=b:387056119 BRANCH=none TEST=built firmware and verified by power team, and noise pass. Change-Id: I57055cdfc9377ba141c620dd4e9301f6e7601629 Signed-off-by: Kun Liu Reviewed-on: https://review.coreboot.org/c/coreboot/+/86103 Reviewed-by: Dengwu Yu Reviewed-by: Subrata Banik Tested-by: build bot (Jenkins) Reviewed-by: Eric Lai --- src/mainboard/google/brya/variants/telith/overridetree.cb | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/mainboard/google/brya/variants/telith/overridetree.cb b/src/mainboard/google/brya/variants/telith/overridetree.cb index 231d83ebd1..202b0ed554 100644 --- a/src/mainboard/google/brya/variants/telith/overridetree.cb +++ b/src/mainboard/google/brya/variants/telith/overridetree.cb @@ -22,8 +22,8 @@ chip soc/intel/alderlake # Acoustic settings register "acoustic_noise_mitigation" = "true" - register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_8" - register "slow_slew_rate[VR_DOMAIN_GT]" = "SLEW_FAST_8" + register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_4" + register "slow_slew_rate[VR_DOMAIN_GT]" = "SLEW_FAST_4" register "fast_pkg_c_ramp_disable[VR_DOMAIN_IA]" = "1" register "fast_pkg_c_ramp_disable[VR_DOMAIN_GT]" = "1"