u-boot/tools/binman/test/94_fmap_x86.dts

// SPDX-License-Identifier: GPL-2.0+
/dts-v1/;

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

	binman {
		end-at-4gb;
		size = <0x100>;
		pad-byte = <0x61>;
		u-boot {
		};
		intel-mrc {
		};
		fmap {
			offset = <0xffffff20>;
		};
	};
};