diff options
| author | Matt DeVillier <matt.devillier@puri.sm> | 2021-06-15 10:50:17 -0500 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-06-21 05:32:44 +0000 |
| commit | 46b642f86ce14faf39afd3ac61128ce672395b47 (patch) | |
| tree | 9d322055cf30f92a127a223422937835249efc0b | |
| parent | 4ccbd49617d9c2f9e51900367c20dcc840735906 (diff) | |
mb/purism/librem_mini: Enable acoustic noise mitigation
Enable FastPkgCRampDisable for all domains, set SlowSlewRate to fast/16
for all domains. This aligns the settings with the Librem 14.
Test: boot Librem Mini v2, observe high frequency acoustic noise reduced.
Change-Id: I10bc2a3e6b631b8c0b430e204f376aa9a81ac683
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55658
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
| -rw-r--r-- | src/mainboard/purism/librem_cnl/variants/librem_mini/devicetree.cb | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/mainboard/purism/librem_cnl/variants/librem_mini/devicetree.cb b/src/mainboard/purism/librem_cnl/variants/librem_mini/devicetree.cb index 69d1b423bd..836f4aceaf 100644 --- a/src/mainboard/purism/librem_cnl/variants/librem_mini/devicetree.cb +++ b/src/mainboard/purism/librem_cnl/variants/librem_mini/devicetree.cb @@ -22,6 +22,16 @@ chip soc/intel/cannonlake # Misc register "AcousticNoiseMitigation" = "1" + register "FastPkgCRampDisableIa" = "1" + register "FastPkgCRampDisableGt" = "1" + register "FastPkgCRampDisableSa" = "1" + register "FastPkgCRampDisableFivr" = "1" + + register "SlowSlewRateForIa" = "3" # fast/16 + register "SlowSlewRateForGt" = "3" # fast/16 + register "SlowSlewRateForSa" = "3" # fast/16 + register "SlowSlewRateForFivr" = "3" # fast/16 + # Power register "PchPmSlpS3MinAssert" = "3" # 50ms register "PchPmSlpS4MinAssert" = "1" # 1s |