linux/arch/arm/boot/dts/skeleton64.dtsi

/*
 * Skeleton device tree in the 64 bits version; the bare minimum
 * needed to boot; just include and add a compatible value.  The
 * bootloader will typically populate the memory node.
 */

/ {
	#address-cells = <2>;
	#size-cells = <2>;
	chosen { };
	aliases { };
	memory { device_type = "memory"; reg = <0 0 0 0>; };
};