u-boot/tools/binman/test/212_fip_collection.dts

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

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

	binman {
		collection {
			content = <&fip &u_boot>;
		};
		fip: atf-fip {
			soc-fw {
				filename = "bl31.bin";
			};

			scp-fwu-cfg {
				filename = "bl2u.bin";
			};
		};
		u_boot: u-boot {
		};
	};
};