diff --git a/src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb b/src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb
index a57289b46a..0d60a57201 100644
--- a/src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb
+++ b/src/mainboard/google/brya/variants/baseboard/brask/devicetree.cb
@@ -76,6 +76,9 @@ chip soc/intel/alderlake
 	# FIVR RFI Spread Spectrum 1.5%
 	register "fivr_spread_spectrum" = "FIVR_SS_1_5"
 
+	# Disable C state auto-demotion for all brask baseboards
+	register "disable_c1_state_auto_demotion" = "1"
+
 	# Intel Common SoC Config
 	#+-------------------+---------------------------+
 	#| Field             |  Value                    |
diff --git a/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb b/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb
index 9ceda11873..c75f321861 100644
--- a/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb
+++ b/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb
@@ -72,6 +72,9 @@ chip soc/intel/alderlake
 	# FIVR RFI Spread Spectrum 1.5%
 	register "fivr_spread_spectrum" = "FIVR_SS_1_5"
 
+	# Disable C state auto-demotion for all brya baseboards
+	register "disable_c1_state_auto_demotion" = "1"
+
 	# Intel Common SoC Config
 	#+-------------------+---------------------------+
 	#| Field             |  Value                    |