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