From 77fb3632a4a3d3004b3aa4950967be9164d9711d Mon Sep 17 00:00:00 2001 From: Nathan_chen Date: Tue, 23 Apr 2019 21:53:27 +0800 Subject: [PATCH] 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: I37315ecfa245fce3085e62d1566ff037d8aa8ab4 Reviewed-on: https://review.coreboot.org/c/coreboot/+/32403 Reviewed-by: Duncan Laurie Reviewed-by: Lijian Zhao Tested-by: build bot (Jenkins) --- coreboot | 1 + src/mainboard/google/sarien/variants/arcada/devicetree.cb | 6 +++--- 2 files changed, 4 insertions(+), 3 deletions(-) create mode 160000 coreboot diff --git a/coreboot b/coreboot new file mode 160000 index 0000000000..1db39a4466 --- /dev/null +++ b/coreboot @@ -0,0 +1 @@ +Subproject commit 1db39a44661f57c2ffe0d795e21c0a4d5dddb494 diff --git a/src/mainboard/google/sarien/variants/arcada/devicetree.cb b/src/mainboard/google/sarien/variants/arcada/devicetree.cb index 57c4e65e70..426bdae88d 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