From a7081a44bd0374451c3f2fe3c6ebfa3bec079412 Mon Sep 17 00:00:00 2001 From: Rui Zhou Date: Mon, 6 Jan 2025 17:19:20 +0800 Subject: [PATCH] mb/google/nissa/var/rull: Configure Acoustic noise mitigation Set slow slew rate VCCIA and VCCGT to SLEW_FAST_4 BUG=b:380384127 TEST=built firmware and verified by power team, and noise pass Change-Id: I54c8412410cca33ffb19a2b21d678b6263ead297 Signed-off-by: Rui Zhou Reviewed-on: https://review.coreboot.org/c/coreboot/+/85863 Reviewed-by: Subrata Banik Tested-by: build bot (Jenkins) Reviewed-by: Kapil Porwal --- src/mainboard/google/brya/variants/rull/overridetree.cb | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/mainboard/google/brya/variants/rull/overridetree.cb b/src/mainboard/google/brya/variants/rull/overridetree.cb index 37669331cf..6e7c2c229a 100644 --- a/src/mainboard/google/brya/variants/rull/overridetree.cb +++ b/src/mainboard/google/brya/variants/rull/overridetree.cb @@ -14,8 +14,8 @@ end 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]" = "true" register "fast_pkg_c_ramp_disable[VR_DOMAIN_GT]" = "true"