From 50c099fe15d1f72efc3adb37dbca90e0685978e0 Mon Sep 17 00:00:00 2001 From: Zanxi Chen Date: Thu, 17 Jun 2021 21:21:01 +0800 Subject: mb/google/dedede/var/blipper: Configure Acoustic noise mitigation UPDs Enable Acoustic noise mitigation for blipper and set slew rate to 1/8 which is calibrated value for the board. BUG=b:187760191 BRANCH=dedede TEST=build firmware to UPD and Acoustic noise test Change-Id: I187702c23712416eaaaaf1e210dcfc6b2c560041 Signed-off-by: Zanxi Chen Reviewed-on: https://review.coreboot.org/c/coreboot/+/55610 Tested-by: build bot (Jenkins) Reviewed-by: Karthik Ramasubramanian --- src/mainboard/google/dedede/variants/blipper/overridetree.cb | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/mainboard/google/dedede/variants/blipper/overridetree.cb b/src/mainboard/google/dedede/variants/blipper/overridetree.cb index 4f83dc037c..280ed5d71d 100644 --- a/src/mainboard/google/dedede/variants/blipper/overridetree.cb +++ b/src/mainboard/google/dedede/variants/blipper/overridetree.cb @@ -52,6 +52,12 @@ chip soc/intel/jasperlake register "tcc_offset" = "10" # TCC of 95C + # Enable Acoustic noise mitigation and set slew rate to 1/8 + # Rest of the parameters are 0 by default. + register "AcousticNoiseMitigation" = "1" + register "SlowSlewRate" = "SlewRateFastBy8" + register "FastPkgCRampDisable" = "1" + device domain 0 on device pci 04.0 on chip drivers/intel/dptf -- cgit v1.2.3