From b242de5bfc99ef2b63d21a9d1bd9f19bf79ee687 Mon Sep 17 00:00:00 2001 From: Nathan_chen Date: Tue, 30 Apr 2019 16:11:35 +0800 Subject: mb/google/arcada: Add settings for noise mitgation Enable acoustic noise mitgation for arcada platform, the slow slew rates for Ia and Gt are fast time dived by 8. BUG=b:131144464 TEST=waveform test and hardware validation result pass. Signed-off-by: nathan chen Change-Id: I395b2fc527705ab207325cfd7147e6af5f300fce Reviewed-on: https://review.coreboot.org/c/coreboot/+/32521 Tested-by: build bot (Jenkins) Reviewed-by: Lijian Zhao --- src/mainboard/google/sarien/variants/arcada/devicetree.cb | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/mainboard/google/sarien/variants/arcada/devicetree.cb b/src/mainboard/google/sarien/variants/arcada/devicetree.cb index cf64c4bb89..77bd82a64b 100644 --- a/src/mainboard/google/sarien/variants/arcada/devicetree.cb +++ b/src/mainboard/google/sarien/variants/arcada/devicetree.cb @@ -37,10 +37,10 @@ chip soc/intel/cannonlake register "tdp_pl2_override" = "51" register "Device4Enable" = "1" register "AcousticNoiseMitigation" = "1" - register "SlowSlewRateForIa" = "0" - register "SlowSlewRateForGt" = "0" + register "SlowSlewRateForIa" = "2" + register "SlowSlewRateForGt" = "2" register "SlowSlewRateForSa" = "0" - register "SlowSlewRateForFivr" = "0" + register "SlowSlewRateForFivr" = "2" # Enable eDP device register "DdiPortEdp" = "1" # Enable HPD for DDI ports B/C -- cgit v1.2.3