MSCC: Add device tree for Jaguar2 board

Add device tree based on evaluation board pcb110.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>

MAINTAINERS

@@ -521,6 +521,7 @@ F:	arch/mips/mach-mscc/
 F:	arch/mips/dts/luton*
 F:	arch/mips/dts/mscc*
 F:	arch/mips/dts/ocelot*
+F:	arch/mips/dts/jr2*
 F:	board/mscc/
 F:	configs/mscc*
 F:	drivers/gpio/mscc_sgpio.c

arch/mips/dts/jr2_pcb110.dts

@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+/dts-v1/;
+#include "mscc,jr2.dtsi"
+
+/ {
+	model = "Jaguar2 Cu8-Sfp16 PCB110 Reference Board";
+	compatible = "mscc,jr2-pcb110", "mscc,jr2";
+
+	aliases {
+		spi0 = &spi0;
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		status_green {
+			label = "pcb110:green:status";
+			gpios = <&gpio 12 0>;
+			default-state = "on";
+		};
+
+		status_red {
+			label = "pcb110:red:status";
+			gpios = <&gpio 13 0>;
+			default-state = "off";
+		};
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+	spi-flash@0 {
+		compatible = "spi-flash";
+		spi-max-frequency = <18000000>; /* input clock */
+		reg = <0>; /* CS0 */
+	};
+};
+
+&gpio {
+	/* SPIO only use DO, CLK, no inputs */
+	sgpio1_pins: sgpio1-pins {
+		pins = "GPIO_4", "GPIO_5";
+		function = "sg1";
+	};
+};
+
+&sgpio {
+	status = "okay";
+	sgpio-ports = <0x00ffffff>;
+};
+
+&sgpio1 {
+	status = "okay";
+	sgpio-ports = <0x00ff0000>;
+};
+
+&sgpio2 {
+	status = "okay";
+	sgpio-ports = <0x3f00ffff>;
+	gpio-ranges = <&sgpio2 0 0 96>;
+};

arch/mips/dts/mscc,jr2.dtsi

@@ -0,0 +1,187 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	compatible = "mscc,jr2";
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			compatible = "mips,mips24KEc";
+			device_type = "cpu";
+			clocks = <&cpu_clk>;
+			reg = <0>;
+		};
+	};
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	cpuintc: interrupt-controller@0 {
+		#address-cells = <0>;
+		#interrupt-cells = <1>;
+		interrupt-controller;
+		compatible = "mti,cpu-interrupt-controller";
+	};
+
+	cpu_clk: cpu-clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <500000000>;
+	};
+
+	ahb_clk: ahb-clk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <250000000>;
+	};
+
+	ahb {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0x70000000 0x2000000>;
+
+		interrupt-parent = <&intc>;
+
+		cpu_ctrl: syscon@0 {
+			compatible = "mscc,jr2-cpu-syscon", "syscon";
+			reg = <0x0 0x2c>;
+		};
+
+		intc: interrupt-controller@70 {
+			compatible = "mscc,jr2-icpu-intr";
+			reg = <0x70 0x94>;
+			#interrupt-cells = <1>;
+			interrupt-controller;
+			interrupt-parent = <&cpuintc>;
+			interrupts = <2>;
+		};
+
+		uart0: serial@100000 {
+			pinctrl-0 = <&uart_pins>;
+			pinctrl-names = "default";
+			compatible = "ns16550a";
+			reg = <0x100000 0x20>;
+			interrupts = <6>;
+			clocks = <&ahb_clk>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+
+			status = "disabled";
+		};
+
+		uart2: serial@100800 {
+			pinctrl-0 = <&uart2_pins>;
+			pinctrl-names = "default";
+			compatible = "ns16550a";
+			reg = <0x100800 0x20>;
+			interrupts = <7>;
+			clocks = <&ahb_clk>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+
+			status = "disabled";
+		};
+
+		spi0: spi-master@101000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "snps,dw-apb-ssi";
+			reg = <0x101000 0x40>;
+			num-chipselect = <4>;
+			bus-num = <0>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+			spi-max-frequency = <18000000>; /* input clock */
+			clocks = <&ahb_clk>;
+
+			status = "disabled";
+		};
+
+		reset@1010008 {
+			compatible = "mscc,jr2-chip-reset";
+			reg = <0x1010008 0x4>;
+		};
+
+		gpio: pinctrl@1070034 {
+			compatible = "mscc,jaguar2-pinctrl";
+			reg = <0x1010038 0x90>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&gpio 0 0 64>;
+
+			sgpio_pins: sgpio-pins {
+				pins = "GPIO_0", "GPIO_1", "GPIO_2", "GPIO_3";
+				function = "sg0";
+			};
+
+			sgpio1_pins: sgpio1-pins {
+				pins = "GPIO_4", "GPIO_5", "GPIO_12", "GPIO_13";
+				function = "sg1";
+			};
+
+			sgpio2_pins: sgpio2-pins {
+				pins = "GPIO_30", "GPIO_31",
+				       "GPIO_32", "GPIO_33";
+				function = "sg2";
+			};
+
+			uart_pins: uart-pins {
+				pins = "GPIO_10", "GPIO_11";
+				function = "uart";
+			};
+
+			uart2_pins: uart2-pins {
+				pins = "GPIO_24", "GPIO_25";
+				function = "uart2";
+			};
+		};
+
+		sgpio: gpio@1010150 {
+			compatible = "mscc,ocelot-sgpio";
+			status = "disabled";
+			pinctrl-0 = <&sgpio_pins>;
+			pinctrl-names = "default";
+			reg = <0x1010150 0x100>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&sgpio 0 0 64>;
+			gpio-bank-name = "sgpio0_";
+			sgpio-clock = <0x14>;
+		};
+
+		sgpio1: gpio@101025c {
+			compatible = "mscc,ocelot-sgpio";
+			status = "disabled";
+			pinctrl-0 = <&sgpio1_pins>;
+			pinctrl-names = "default";
+			reg = <0x101025c 0x100>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&sgpio1 0 0 64>;
+			gpio-bank-name = "sgpio1_";
+			sgpio-clock = <0x14>;
+		};
+
+		sgpio2: gpio@1010368 {
+			compatible = "mscc,ocelot-sgpio";
+			status = "disabled";
+			pinctrl-0 = <&sgpio2_pins>;
+			pinctrl-names = "default";
+			reg = <0x1010368 0x100>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&sgpio2 0 0 64>;
+			gpio-bank-name = "sgpio2_";
+			sgpio-clock = <0x14>;
+		};
+	};
+};