linux-libre/arch/xtensa/boot/dts/csp.dts

/dts-v1/;

/ {
	compatible = "cdns,xtensa-xtfpga";
	#address-cells = <1>;
	#size-cells = <1>;
	interrupt-parent = <&pic>;

	chosen {
		bootargs = "earlycon=cdns,0xfd000000,115200 console=tty0 console=ttyPS0,115200 root=/dev/ram0 rw earlyprintk xilinx_uartps.rx_trigger_level=32 loglevel=8 nohz=off ignore_loglevel";
	};

	memory@0 {
		device_type = "memory";
		reg = <0x00000000 0x40000000>;
	};

	cpus {
		#address-cells = <1>;
		#size-cells = <0>;
		cpu@0 {
			compatible = "cdns,xtensa-cpu";
			reg = <0>;
		};
	};

	pic: pic {
		compatible = "cdns,xtensa-pic";
		#interrupt-cells = <2>;
		interrupt-controller;
	};

	clocks {
		osc: main-oscillator {
			#clock-cells = <0>;
			compatible = "fixed-clock";
		};
	};

	soc {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "simple-bus";
		ranges = <0x00000000 0xf0000000 0x10000000>;

		uart0: serial@0d000000 {
			compatible = "xlnx,xuartps", "cdns,uart-r1p8";
			clocks = <&osc>, <&osc>;
			clock-names = "uart_clk", "pclk";
			reg = <0x0d000000 0x1000>;
			interrupts = <0 1>;
		};
	};
};