From 5ef9259d765c2292df4ace7878ca51ce4b1f974f Mon Sep 17 00:00:00 2001 From: Kenneth Chan Date: Thu, 17 Apr 2025 11:58:30 +0800 Subject: [PATCH] mb/google/rex/var/kanix: Configure Acoustic noise mitigation Enable Acoustic noise mitigation for google/kanix and set slew rate to 1/8 for IA and GT domains. BUG=b:409934780 BRANCH=firmware-rex-15709.B TEST=Able to build and boot to google/kanix Change-Id: I73460715ac71428843cf505a21de15a6e4d15bea Signed-off-by: Kenneth Chan Reviewed-on: https://review.coreboot.org/c/coreboot/+/87349 Reviewed-by: Subrata Banik Tested-by: build bot (Jenkins) --- .../google/rex/variants/kanix/overridetree.cb | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/mainboard/google/rex/variants/kanix/overridetree.cb b/src/mainboard/google/rex/variants/kanix/overridetree.cb index 8f2aed31bf..7ba3538879 100644 --- a/src/mainboard/google/rex/variants/kanix/overridetree.cb +++ b/src/mainboard/google/rex/variants/kanix/overridetree.cb @@ -88,6 +88,16 @@ chip soc/intel/meteorlake [PchSerialIoIndexI2C5] = PchSerialIoPci, }" + # Acoustic Noise settings and slew rate configuration: + # slew rate for IA Domain: Fast/8 + # slew rate for GT Domain: Fast/8 + # Ignore slew rate configuration for SA Domain + register "enable_acoustic_noise_mitigation" = "1" + register "disable_fast_pkgc_ramp[VR_DOMAIN_IA]" = "1" + register "slow_slew_rate_config[VR_DOMAIN_IA]" = "SLEW_FAST_8" + register "disable_fast_pkgc_ramp[VR_DOMAIN_GT]" = "1" + register "slow_slew_rate_config[VR_DOMAIN_GT]" = "SLEW_FAST_8" + # Intel Common SoC Config #+-------------------+---------------------------+ #| Field | Value |