Shelley Chen submitted this change.
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>
---
M src/mainboard/google/hatch/variants/dratini/overridetree.cb
M src/mainboard/google/hatch/variants/jinlon/overridetree.cb
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 f820629..5c30a5a 100644
--- a/src/mainboard/google/hatch/variants/dratini/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/dratini/overridetree.cb
@@ -17,6 +17,15 @@
[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 c9613d2..f3f6c3b 100644
--- a/src/mainboard/google/hatch/variants/jinlon/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/jinlon/overridetree.cb
@@ -17,6 +17,15 @@
[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 |
To view, visit change 38212. To unsubscribe, or for help writing mail filters, visit settings.