--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -277,6 +277,9 @@ quiet_cmd_gzip = GZIP    $@
 DTC ?= $(objtree)/scripts/dtc/dtc
 DTC_FLAGS += -Wno-interrupt_provider
 
+# Enable overlay support
+DTC_FLAGS += -@
+
 # Disable noisy checks by default
 ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
 DTC_FLAGS += -Wno-unit_address_vs_reg \