linux/arch/arm/boot/dts/intel/ixp/intel-ixp42x-linksys-wrv54g.dts

// SPDX-License-Identifier: ISC
/*
 * Device Tree file for the Linksys WRV54G router
 * Also known as Gemtek GTWX5715
 * Based on a board file by George T. Joseph and other patches.
 * This machine is based on IXP425.
 */

/dts-v1/;

#include "intel-ixp42x.dtsi"
#include <dt-bindings/input/input.h>

/ {
	model = "Linksys WRV54G / Gemtek GTWX5715";
	compatible = "linksys,wrv54g", "intel,ixp42x";
	#address-cells = <1>;
	#size-cells = <1>;

	memory@0 {
		/* 32 MB memory */
		device_type = "memory";
		reg = <0x00000000 0x2000000>;
	};

	chosen {
		bootargs = "console=ttyS0,115200n8";
		stdout-path = "uart1:115200n8";
	};

	aliases {
		/* UART2 is the primary console */
		serial0 = &uart1;
		serial1 = &uart0;
	};

	/* There is an unpopulated LED slot (3) connected to GPIO 8 */
	leds {
		compatible = "gpio-leds";
		led-power {
			label = "wrv54g:yellow:power";
			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
			default-state = "on";
			linux,default-trigger = "heartbeat";
		};
		led-wireless {
			label = "wrv54g:yellow:wireless";
			gpios = <&gpio0 9 GPIO_ACTIVE_LOW>;
			default-state = "on";
		};
		led-internet {
			label = "wrv54g:yellow:internet";
			gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
			default-state = "on";
		};
		led-dmz {
			label = "wrv54g:green:dmz";
			gpios = <&gpio0 4 GPIO_ACTIVE_LOW>;
			default-state = "on";
		};
	};

	/* This set-up comes from an OpenWrt patch */
	spi {
		compatible = "spi-gpio";
		#address-cells = <1>;
		#size-cells = <0>;

		sck-gpios = <&gpio0 7 GPIO_ACTIVE_HIGH>;
		miso-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
		mosi-gpios = <&gpio0 6 GPIO_ACTIVE_HIGH>;
		cs-gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
		num-chipselects = <1>;

		ethernet-switch@0 {
			compatible = "micrel,ks8995";
			reg = <0>;
			spi-max-frequency = <50000000>;

			/*
			 * The PHYs are accessed over the external MDIO
			 * bus and not internally through the switch control
			 * registers.
			 */
			ethernet-ports {
				#address-cells = <1>;
				#size-cells = <0>;

				ethernet-port@0 {
					reg = <0>;
					label = "1";
					phy-mode = "mii";
					phy-handle = <&phy1>;
				};
				ethernet-port@1 {
					reg = <1>;
					label = "2";
					phy-mode = "mii";
					phy-handle = <&phy2>;
				};
				ethernet-port@2 {
					reg = <2>;
					label = "3";
					phy-mode = "mii";
					phy-handle = <&phy3>;
				};
				ethernet-port@3 {
					reg = <3>;
					label = "4";
					phy-mode = "mii";
					phy-handle = <&phy4>;
				};
				ethernet-port@4 {
					reg = <4>;
					ethernet = <&ethb>;
					phy-mode = "mii";
					fixed-link {
						speed = <100>;
						full-duplex;
					};
				};

			};
		};
	};

	soc {
		bus@c4000000 {
			flash@0,0 {
				compatible = "intel,ixp4xx-flash", "cfi-flash";
				bank-width = <2>;
				/* Enable writes on the expansion bus */
				intel,ixp4xx-eb-write-enable = <1>;
				/* 8 MB of Flash mapped in at CS0 */
				reg = <0 0x00000000 0x00800000>;

				partitions {
					compatible = "fixed-partitions";
					/*
					 * Partition info from a boot log
					 * CHECKME: not using redboot? FIS index 0x3f @7e00000?
					 */
					#address-cells = <1>;
					#size-cells = <1>;
					partition@0 {
						label = "boot";
						reg = <0x0 0x140000>;
						read-only;
					};
					partition@140000 {
						label = "linux";
						reg = <0x140000 0x100000>;
						read-only;
					};
					partition@240000 {
						label = "root";
						reg = <0x240000 0x480000>;
						read-write;
					};
				};
			};
		};

		pci@c0000000 {
			status = "okay";

			/*
			 * We have up to 2 slots (IDSEL) with 2 swizzled IRQs.
			 * Derived from the GTWX5715 PCI boardfile.
			 */
			#interrupt-cells = <1>;
			interrupt-map-mask = <0xf800 0 0 7>;
			interrupt-map =
			/* IDSEL 0 */
			<0x0000 0 0 1 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 0 is irq 10 */
			<0x0000 0 0 2 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 0 is irq 11 */
			/* IDSEL 1 */
			<0x0800 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 11 */
			<0x0800 0 0 2 &gpio0 10 IRQ_TYPE_LEVEL_LOW>; /* INT B on slot 1 is irq 10 */
		};

		/*
		 * EthB connects to the KS8995 CPU port and faces ports 1-4
		 * through the switch fabric.
		 *
		 * To complicate things, the MDIO channel is also only
		 * accessible through EthB, but used independently for PHY
		 * control.
		 */
		ethb: ethernet@c8009000 {
			status = "okay";
			queue-rx = <&qmgr 3>;
			queue-txready = <&qmgr 20>;
			phy-mode = "mii";
			fixed-link {
				speed = <100>;
				full-duplex;
			};

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

				/*
				 * LAN ports 1-4 on the KS8995 switch
				 * and PHY5 for WAN need to be accessed
				 * through this external MDIO channel.
				 */
				phy1: ethernet-phy@1 {
					reg = <1>;
				};
				phy2: ethernet-phy@2 {
					reg = <2>;
				};
				phy3: ethernet-phy@3 {
					reg = <3>;
				};
				phy4: ethernet-phy@4 {
					reg = <4>;
				};
				phy5: ethernet-phy@5 {
					reg = <5>;
				};
			};
		};

		/*
		 * EthC connects to MII-P5 on the KS8995 bypassing
		 * all of the switch logic and facing PHY5
		 */
		ethc: ethernet@c800a000 {
			status = "okay";
			queue-rx = <&qmgr 4>;
			queue-txready = <&qmgr 21>;
			phy-mode = "mii";
			phy-handle = <&phy5>;
		};
	};
};