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-rw-r--r--src/mainboard/google/poppy/variants/nautilus/devicetree.cb8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
index efaea3fc57..6ee7a52f80 100644
--- a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
@@ -70,6 +70,14 @@ chip soc/intel/skylake
register "pirqg_routing" = "PCH_IRQ11"
register "pirqh_routing" = "PCH_IRQ11"
+ # VR Slew rate setting for improving audible noise
+ register "AcousticNoiseMitigation" = "1"
+ register "FastPkgCRampDisableIa" = "1"
+ register "FastPkgCRampDisableGt" = "1"
+ register "FastPkgCRampDisableSa" = "1"
+ register "SlowSlewRateForIa" = "3" # Fast/16
+ register "SlowSlewRateForGt" = "3" # Fast/16
+ register "SlowSlewRateForSa" = "3" # Fast/16
# VR Settings Configuration for 4 Domains
#+----------------+-------+-------+-------+-------+
#| Domain/Setting | SA | IA | GTUS | GTS |