/dts-v1/;

 / {

	bar: bar {
		port {
			bar_con: endpoint {
				remote-endpoint = <&foo_con>;
			};
		};
	};
	foo {
		remote-endpoint = <&bar_con>; // misplaced remote-endpoint property
		port {
			foo_con: endpoint {
			};
		};
	};
};