arch/arm/boot/dts/kirkwood-km_fixedeth.dts

/dts-v1/;

#include "kirkwood.dtsi"
#include "kirkwood-98dx4122.dtsi"
#include "kirkwood-km_common.dtsi"

/ {
	model = "Keymile Kirkwood Fixed Eth";
	compatible = "keymile,km_fixedeth", "marvell,kirkwood-98DX4122", "marvell,kirkwood";

	memory {
		device_type = "memory";
		reg = <0x00000000 0x10000000>;
	};
};

&eth0 {
	status = "okay";
	ethernet0-port@0 {
		speed = <1000>;  /* <SPEED_1000> */
		duplex = <1>; /* <DUPLEX_FULL> */
	};
};