diff --git a/src/mainboard/google/dedede/variants/lantis/overridetree.cb b/src/mainboard/google/dedede/variants/lantis/overridetree.cb
index 368b1dd..b9d6f72 100644
--- a/src/mainboard/google/dedede/variants/lantis/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/lantis/overridetree.cb
@@ -65,6 +65,12 @@
 		.tdp_pl2_override = 15,
 	}"
 
+	# Enable Acoustic noise mitigation and set slew rate to 1/4
+	# Rest of the parameters are 0 by default.
+	register "AcousticNoiseMitigation" = "1"
+	register "SlowSlewRate" = "SlewRateFastBy4"
+	register "FastPkgCRampDisable" = "1"
+
 	device domain 0 on
 		device pci 04.0 on
 			chip drivers/intel/dptf