From f005dda9dd7b350609479d8778a43cc721603201 Mon Sep 17 00:00:00 2001 From: Kevin Chang Date: Fri, 23 Apr 2021 10:12:46 +0800 Subject: [PATCH] mb/google/volteer/variant/lindar: Disable acoustic mitigation Roll back CPU slow slew rate setting to Intel default "SLEW_FAST_2" Because baseboard modify slow slew rate setting to "SLEW_FASE_8" for all project, but Lindar and Lillipup is using "SLEW_FAST_2", so this setting need to roll back. BUG=b:186140230 TEST=Build FW and boot to OS checking with CPU log. Signed-off-by: Kevin Chang Change-Id: I7de252b26c75f8dad218f3eb79a0988e60964f4c Signed-off-by: Kevin Chang Reviewed-on: https://review.coreboot.org/c/coreboot/+/52620 Reviewed-by: Zhuohao Lee Reviewed-by: Tim Wawrzynczak Reviewed-by: Nick Vaccaro Tested-by: build bot (Jenkins) --- .../google/volteer/variants/lindar/overridetree.cb | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/mainboard/google/volteer/variants/lindar/overridetree.cb b/src/mainboard/google/volteer/variants/lindar/overridetree.cb index 945d2e913c..a1010d2318 100644 --- a/src/mainboard/google/volteer/variants/lindar/overridetree.cb +++ b/src/mainboard/google/volteer/variants/lindar/overridetree.cb @@ -57,6 +57,12 @@ chip soc/intel/tigerlake [PchSerialIoIndexI2C4] = PchSerialIoDisabled, [PchSerialIoIndexI2C5] = PchSerialIoPci, }" + + # Acoustic settings + register "AcousticNoiseMitigation" = "0" + register "SlowSlewRate" = "SLEW_FAST_2" + register "FastPkgCRampDisable" = "0" + device domain 0 on device ref dptf on chip drivers/intel/dptf