u-boot-brain/tools/binman/test/31_x86-rom-me.dts

/dts-v1/;

/ {
	#address-cells = <1>;
	#size-cells = <1>;

	binman {
		sort-by-pos;
		end-at-4gb;
		size = <0x800000>;
		intel-descriptor {
			filename = "descriptor.bin";
		};

		intel-me {
			filename = "me.bin";
			pos-unset;
		};
	};
};