linux-libre/arch/arm/boot/dts/armv7-m.dtsi

/ {
	nvic: interrupt-controller@e000e100  {
		compatible = "arm,armv7m-nvic";
		interrupt-controller;
		#interrupt-cells = <1>;
		reg = <0xe000e100 0xc00>;
	};

	systick: timer@e000e010 {
		compatible = "arm,armv7m-systick";
		reg = <0xe000e010 0x10>;
		status = "disabled";
	};

	soc {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "simple-bus";
		interrupt-parent = <&nvic>;
		ranges;
	};
};