qemu/dtc/tests/property_iterate.dts

/dts-v1/;

/ {
	#address-cells = <1>;
	#size-cells = <0>;

	test1 {
		test-properties = <3>;

		test {
			linux,phandle = <0x1>;
			#address-cells = <1>;
			#size-cells = <0>;
		};
	};

	test2 {
		test-properties = <0>;

		test {
		};
	};
};