Sheng-Liang Pan has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/50293 )
Change subject: mb/google/volteer/var/voxel: Add settings for noise mitgation ......................................................................
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.
Change-Id: I279a85c7741094bb7ddf0c1fde74b31189b12171 --- M src/mainboard/google/volteer/variants/voxel/overridetree.cb 1 file changed, 11 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/93/50293/1
diff --git a/src/mainboard/google/volteer/variants/voxel/overridetree.cb b/src/mainboard/google/volteer/variants/voxel/overridetree.cb index 82f0bfd..cdb21b7 100644 --- a/src/mainboard/google/volteer/variants/voxel/overridetree.cb +++ b/src/mainboard/google/volteer/variants/voxel/overridetree.cb @@ -19,6 +19,17 @@ # 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