arch/mips/boot/dts/ingenic/Makefile - linux-imx - Git at Google

 dtb-$(CONFIG_JZ4740_QI_LB60)	+= qi_lb60.dtb
 dtb-$(CONFIG_JZ4780_CI20)	+= ci20.dtb

 obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))

 # Force kbuild to make empty built-in.o if necessary
 obj-				+= dummy.o

 always				:= $(dtb-y)
 clean-files			:= *.dtb *.dtb.S
	dtb-$(CONFIG_JZ4740_QI_LB60) += qi_lb60.dtb
	dtb-$(CONFIG_JZ4780_CI20) += ci20.dtb

	obj-y += $(patsubst %.dtb, %.dtb.o, $(dtb-y))

	# Force kbuild to make empty built-in.o if necessary
	obj- += dummy.o

	always := $(dtb-y)
	clean-files := .dtb .dtb.S