xref: /freebsd/sys/contrib/device-tree/src/mips/econet/en751221.dtsi (revision ae5de77ed78ae54d86cead5604869212e8008e6b)

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/dts-v1/;

/ {
	compatible = "econet,en751221";
	#address-cells = <1>;
	#size-cells = <1>;

	hpt_clock: clock {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <200000000>;  /* 200 MHz */
	};

	cpus: cpus {
		#address-cells = <1>;
		#size-cells = <0>;

		cpu@0 {
			device_type = "cpu";
			compatible = "mips,mips24KEc";
			reg = <0>;
		};
	};

	cpuintc: interrupt-controller {
		compatible = "mti,cpu-interrupt-controller";
		interrupt-controller;
		#address-cells = <0>;
		#interrupt-cells = <1>;
	};

	intc: interrupt-controller@1fb40000 {
		compatible = "econet,en751221-intc";
		reg = <0x1fb40000 0x100>;
		interrupt-parent = <&cpuintc>;
		interrupts = <2>;

		interrupt-controller;
		#interrupt-cells = <1>;
		econet,shadow-interrupts = <7 2>, <8 3>, <13 12>, <30 29>;
	};

	uart: serial@1fbf0000 {
		compatible = "ns16550";
		reg = <0x1fbf0000 0x30>;
		reg-io-width = <4>;
		reg-shift = <2>;
		interrupt-parent = <&intc>;
		interrupts = <0>;
		/*
		 * Conversion of baud rate to clock frequency requires a
		 * computation that is not in the ns16550 driver, so this
		 * uart is fixed at 115200 baud.
		 */
		clock-frequency = <1843200>;
	};

	timer_hpt: timer@1fbf0400 {
		compatible = "econet,en751221-timer";
		reg = <0x1fbf0400 0x100>;

		interrupt-parent = <&intc>;
		interrupts = <30>;
		clocks = <&hpt_clock>;
	};
};