diff --git a/make_helpers/defaults.mk b/make_helpers/defaults.mk
index b9ea810..2685195 100644
--- a/make_helpers/defaults.mk
+++ b/make_helpers/defaults.mk
@@ -395,3 +395,7 @@
 
 # Enable early console
 EARLY_CONSOLE			:= 0
+
+# Allow platforms to save/restore DSU PMU registers over a power cycle.
+# Disabled by default and must be enabled by individual platforms.
+PRESERVE_DSU_PMU_REGS		:= 0