From ebf380b56644858995a7f5410c642479c2d36072 Mon Sep 17 00:00:00 2001 From: Tony Huang Date: Wed, 24 Mar 2021 13:16:03 +0800 Subject: [PATCH] mb/google/dedede/var/lantis: Configure Acoustic noise mitigation UPDs Enable Acoustic noise mitigation for lantis and set slew rate to 1/4 which is calibrated value for the board. Other values like PreWake, Rampup and RampDown are 0 by default. BUG=b:183561593 BRANCH=dedede TEST=EE verify acoustic noise test passes. Change-Id: I5e5f24ed934910726c220678068d085b6ee2bcf6 Signed-off-by: Tony Huang Reviewed-on: https://review.coreboot.org/c/coreboot/+/51762 Reviewed-by: Karthik Ramasubramanian Tested-by: build bot (Jenkins) --- src/mainboard/google/dedede/variants/lantis/overridetree.cb | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/mainboard/google/dedede/variants/lantis/overridetree.cb b/src/mainboard/google/dedede/variants/lantis/overridetree.cb index 368b1dd9bc..b9d6f72af7 100644 --- a/src/mainboard/google/dedede/variants/lantis/overridetree.cb +++ b/src/mainboard/google/dedede/variants/lantis/overridetree.cb @@ -65,6 +65,12 @@ chip soc/intel/jasperlake .tdp_pl2_override = 15, }" + # Enable Acoustic noise mitigation and set slew rate to 1/4 + # Rest of the parameters are 0 by default. + register "AcousticNoiseMitigation" = "1" + register "SlowSlewRate" = "SlewRateFastBy4" + register "FastPkgCRampDisable" = "1" + device domain 0 on device pci 04.0 on chip drivers/intel/dptf