diff --git a/Makefile b/Makefile
index 552687d..aeb1c14 100644
--- a/Makefile
+++ b/Makefile
@@ -1048,9 +1048,11 @@
 
 # binman
 # ---------------------------------------------------------------------------
+# Use 'make BINMAN_DEBUG=1' to enable debugging
 quiet_cmd_binman = BINMAN  $@
-cmd_binman = $(srctree)/tools/binman/binman -d u-boot.dtb -O . \
-		-I . -I $(srctree)/board/$(BOARDDIR) $<
+cmd_binman = $(srctree)/tools/binman/binman -u -d u-boot.dtb -O . -m \
+		-I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \
+		$(if $(BINMAN_DEBUG),-D) $(BINMAN_$(@F)) $<
 
 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex