From 2c98b3ad235a63ec279990a694f91e32098f3da5 Mon Sep 17 00:00:00 2001 From: David Wu Date: Tue, 29 Oct 2024 15:12:07 +0800 Subject: mb/google/nissa/var/riven: 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_4 - Set FastPkgCRampDisable VCCIA and VCCGT to 1 BUG=b:376165743 TEST=built firmware and verified by power team, the acoustic noise can be improved a lot. Change-Id: Ia71985ef21d634763fc5ae22e4f611f7f5e9652a Signed-off-by: David Wu Reviewed-on: https://review.coreboot.org/c/coreboot/+/84908 Tested-by: build bot (Jenkins) Reviewed-by: Eric Lai Reviewed-by: Kapil Porwal Reviewed-by: Subrata Banik Reviewed-by: Jayvik Desai --- src/mainboard/google/brya/variants/riven/overridetree.cb | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/mainboard/google') diff --git a/src/mainboard/google/brya/variants/riven/overridetree.cb b/src/mainboard/google/brya/variants/riven/overridetree.cb index d565897e3d..00947c41f4 100644 --- a/src/mainboard/google/brya/variants/riven/overridetree.cb +++ b/src/mainboard/google/brya/variants/riven/overridetree.cb @@ -24,6 +24,13 @@ fw_config end chip soc/intel/alderlake + # Acoustic settings + register "acoustic_noise_mitigation" = "1" + 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" + register "sagv" = "SaGv_Enabled" # EMMC Tx CMD Delay -- cgit v1.2.3