diff options
| author | Wisley Chen <wisley.chen@quanta.corp-partner.google.com> | 2020-01-06 17:44:10 +0800 |
|---|---|---|
| committer | Shelley Chen <shchen@google.com> | 2020-02-06 03:48:21 +0000 |
| commit | eae254efb324e89d30d0f6abd3e40d6e951abba9 (patch) | |
| tree | 1ec6965c683818e8f4325bfb4a94ed2819ad1673 /src/mainboard/google/hatch/variants | |
| parent | a547584445c086fdcd0833bbbe649a11019fcd11 (diff) | |
mb/google/hatch: Add noise mitigation setting for dratini/jinlon
Enable acoustic noise mitigation, the slow slew rates are fast time divided by 8
and disable Fast PKG C State Ramp (IA, GT, SA).
BRANCH=hatch
BUG=b:143501884
TEST=build and verify that noise reduce.
Change-Id: I65f47288a7b1da98296fdba87ab5ca0c3a567aaf
Signed-off-by: Wisley Chen <wisley.chen@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38212
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/hatch/variants')
| -rw-r--r-- | src/mainboard/google/hatch/variants/dratini/overridetree.cb | 9 | ||||
| -rw-r--r-- | src/mainboard/google/hatch/variants/jinlon/overridetree.cb | 9 |
2 files changed, 18 insertions, 0 deletions
diff --git a/src/mainboard/google/hatch/variants/dratini/overridetree.cb b/src/mainboard/google/hatch/variants/dratini/overridetree.cb index f820629198..5c30a5a93f 100644 --- a/src/mainboard/google/hatch/variants/dratini/overridetree.cb +++ b/src/mainboard/google/hatch/variants/dratini/overridetree.cb @@ -17,6 +17,15 @@ chip soc/intel/cannonlake [PchSerialIoIndexUART2] = PchSerialIoDisabled, }" + # VR Slew rate setting + register "AcousticNoiseMitigation" = "1" + register "SlowSlewRateForIa" = "2" + register "SlowSlewRateForGt" = "2" + register "SlowSlewRateForSa" = "2" + register "FastPkgCRampDisableIa" = "1" + register "FastPkgCRampDisableGt" = "1" + register "FastPkgCRampDisableSa" = "1" + # Intel Common SoC Config #+-------------------+---------------------------+ #| Field | Value | diff --git a/src/mainboard/google/hatch/variants/jinlon/overridetree.cb b/src/mainboard/google/hatch/variants/jinlon/overridetree.cb index c9613d2677..f3f6c3b949 100644 --- a/src/mainboard/google/hatch/variants/jinlon/overridetree.cb +++ b/src/mainboard/google/hatch/variants/jinlon/overridetree.cb @@ -17,6 +17,15 @@ chip soc/intel/cannonlake [PchSerialIoIndexUART2] = PchSerialIoDisabled, }" + # VR Slew rate setting + register "AcousticNoiseMitigation" = "1" + register "SlowSlewRateForIa" = "2" + register "SlowSlewRateForGt" = "2" + register "SlowSlewRateForSa" = "2" + register "FastPkgCRampDisableIa" = "1" + register "FastPkgCRampDisableGt" = "1" + register "FastPkgCRampDisableSa" = "1" + # Intel Common SoC Config #+-------------------+---------------------------+ #| Field | Value | |