u-boot/arch/mips/dts/mscc,luton.dtsi

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Copyright (c) 2018 Microsemi Corporation
 */

#include <dt-bindings/gpio/gpio.h>

/ {
	#address-cells = <1>;
	#size-cells = <1>;
	compatible = "mscc,luton";

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

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

	aliases {
		serial0 = &uart0;
	};

	sys_clk: sys-clk {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <250000000>;
	};
	ahb_clk: ahb-clk {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <208333333>;
	};

	ahb {
		compatible = "simple-bus";
		#address-cells = <1>;
		#size-cells = <1>;
		ranges = <0 0x60000000 0x10200000>;

		uart0: serial@10100000 {
			pinctrl-0 = <&uart_pins>;
			pinctrl-names = "default";

			compatible = "ns16550a";
			reg = <0x10100000 0x20>;
			clocks = <&ahb_clk>;
			reg-io-width = <4>;
			reg-shift = <2>;

			status = "disabled";
		};

		gpio: pinctrl@70068 {
			compatible = "mscc,luton-pinctrl";
			reg = <0x70068 0x68>;
			gpio-controller;
			#gpio-cells = <2>;
			gpio-ranges = <&gpio 0 0 32>;

			sgpio_pins: sgpio-pins {
				pins = "GPIO_0", "GPIO_1", "GPIO_2", "GPIO_3";
				function = "sio";
			};
			uart_pins: uart-pins {
				pins = "GPIO_30", "GPIO_31";
				function = "uart";
			};
		};

		sgpio: gpio@70130 {
			compatible = "mscc,luton-sgpio";
			status = "disabled";
			clocks = <&sys_clk>;
			pinctrl-0 = <&sgpio_pins>;
			pinctrl-names = "default";
			reg = <0x0070130 0x100>;
			gpio-controller;
			#gpio-cells = <2>;
			gpio-ranges = <&sgpio 0 0 64>;
		};

		gpio_spi_bitbang: gpio@10000064 {
			compatible = "mscc,spi-bitbang-gpio";
			reg = <0x10000064 0x4>;
			gpio-controller;
			#gpio-cells = <2>;

		};

		spi0: spi-bitbang {
			compatible = "spi-gpio";
			status = "okay";
			gpio-sck = <&gpio_spi_bitbang 6 0>;
			gpio-miso = <&gpio_spi_bitbang 0 0>;
			gpio-mosi = <&gpio_spi_bitbang 5 0>;
			cs-gpios = <&gpio_spi_bitbang 1 0>;
			num-chipselects = <1>;
			#address-cells = <1>;
			#size-cells = <0>;
		};
	};
};