From 076d9b9778cf756ef68be7c3977c44ce2af7cc98 Mon Sep 17 00:00:00 2001 From: Sheng-Liang Pan Date: Fri, 5 Feb 2021 10:42:54 +0800 Subject: [PATCH] mb/google/volteer/var/voxel: Add settings for noise mitgation Enable acoustic noise mitgation for volteer platforms. BUG=b:179328166 BRANCH=none TEST= Measure the change in noise level by changing the values in devicetree. Signed-off-by: Pan Sheng-Liang Change-Id: I279a85c7741094bb7ddf0c1fde74b31189b12171 Reviewed-on: https://review.coreboot.org/c/coreboot/+/50293 Tested-by: build bot (Jenkins) Reviewed-by: Nick Vaccaro --- .../google/volteer/variants/voxel/overridetree.cb | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/src/mainboard/google/volteer/variants/voxel/overridetree.cb b/src/mainboard/google/volteer/variants/voxel/overridetree.cb index 879086fb75..ed90069ab4 100644 --- a/src/mainboard/google/volteer/variants/voxel/overridetree.cb +++ b/src/mainboard/google/volteer/variants/voxel/overridetree.cb @@ -19,6 +19,17 @@ chip soc/intel/tigerlake # Disable SRCCLKREQ1# register "PcieClkSrcUsage[1]" = "PCIE_CLK_NOTUSED" + # Acoustic settings + register "AcousticNoiseMitigation" = "1" + register "SlowSlewRate[VR_DOMAIN_IA]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_GT]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_SA]" = "SLEW_FAST_8" + register "SlowSlewRate[VR_DOMAIN_VLCC]" = "SLEW_FAST_8" + register "FastPkgCRampDisable[VR_DOMAIN_IA]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_GT]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_SA]" = "1" + register "FastPkgCRampDisable[VR_DOMAIN_VLCC]" = "1" + device domain 0 on device ref dptf on chip drivers/intel/dptf