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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 <nathan_chen@wistron.corp-partner.google.com>
Change-Id: I395b2fc527705ab207325cfd7147e6af5f300fce
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32521
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
This commit is contained in:
Nathan_chen 2019-04-30 16:11:35 +08:00 committed by Duncan Laurie
parent aa0929d101
commit b242de5bfc
1 changed files with 3 additions and 3 deletions
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6
src/mainboard/google/sarien/variants/arcada/devicetree.cb
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@ -37,10 +37,10 @@ chip soc/intel/cannonlake
register "tdp_pl2_override" = "51" register "tdp_pl2_override" = "51"
register "Device4Enable" = "1" register "Device4Enable" = "1"
register "AcousticNoiseMitigation" = "1" register "AcousticNoiseMitigation" = "1"
register "SlowSlewRateForIa" = "0" register "SlowSlewRateForIa" = "2"
register "SlowSlewRateForGt" = "0" register "SlowSlewRateForGt" = "2"
register "SlowSlewRateForSa" = "0" register "SlowSlewRateForSa" = "0"
register "SlowSlewRateForFivr" = "0" register "SlowSlewRateForFivr" = "2"
# Enable eDP device # Enable eDP device
register "DdiPortEdp" = "1" register "DdiPortEdp" = "1"
# Enable HPD for DDI ports B/C # Enable HPD for DDI ports B/C