tests/overlay_overlay_phandle.dts

/*
 * Copyright (c) 2024 Uwe Kleine-König
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/dts-v1/;
/plugin/;

&{/} {
	/*
	 * /b already has a label "node_b" in the base dts, also b is already
	 * referenced in the base, so both the base's b and this b have a
	 * phandle value.
	 */
	node_b2: b {
		value = <42>;
		d = <&node_d>;
	};

	node_c: c {
		value = <23>;
		b = <&node_b2>;
	};

	d {
		a = <&node_a>;
		c = <&node_c>;
	};
};

&node_a {
	value = <32>;
};