From a8b4ee246d6ef6076771911dd646f6c2afc3847c Mon Sep 17 00:00:00 2001 From: Rui Zhou Date: Mon, 30 Dec 2024 15:00:59 +0800 Subject: [PATCH] mb/google/nissa/var/rull: Configure Acoustic noise mitigation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-on: https://review.coreboot.org/c/coreboot/+/85798 Reviewed-by: Elyes Haouas Tested-by: build bot (Jenkins) Reviewed-by: Subrata Banik Reviewed-by: Eric Lai --- src/mainboard/google/brya/variants/rull/overridetree.cb | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/mainboard/google/brya/variants/rull/overridetree.cb b/src/mainboard/google/brya/variants/rull/overridetree.cb index b11c25d244..3c04da5dac 100644 --- a/src/mainboard/google/brya/variants/rull/overridetree.cb +++ b/src/mainboard/google/brya/variants/rull/overridetree.cb @@ -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