arch/arm/boot/dts/intel-ixp42x-ixdpg425.dts

// SPDX-License-Identifier: ISC
/*
 * Device Tree file for the Intel IXDPG425 reference design.
 * Derived from boardfiles written by MontaVista software.
 * Ethernet set-up from OpenWrt.
 *
 * The device has 4 x FXS RJ11 ports for analog phones for
 * internet telephony. (Not supported yet.)
 *
 * The device has 9 status LEDs we do not support yet.
 *
 * This device is very similar to ADI engingeering Coyote.
 */

/dts-v1/;

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

/ {
	model = "Intel IXDPG425 reference design";
	compatible = "intel,ixdpg425", "intel,ixp42x";
	#address-cells = <1>;
	#size-cells = <1>;

	memory@0 {
		/* 32 MB SDRAM */
		device_type = "memory";
		reg = <0x00000000 0x02000000>;
	};

	chosen {
		bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootwait";
		stdout-path = "uart0:115200n8";
	};

	aliases {
		serial0 = &uart0;
	};

	soc {
		bus@c4000000 {
			flash@0,0 {
				compatible = "intel,ixp4xx-flash", "cfi-flash";
				bank-width = <2>;
				/*
				 * CHECKME: the product brief says 16MB in a flash
				 * socket.
				 */
				reg = <0 0x00000000 0x1000000>;

				/* Configure expansion bus to allow writes */
				intel,ixp4xx-eb-write-enable = <1>;

				partitions {
					compatible = "redboot-fis";
					/* CHECKME: guess this is Redboot FIS */
					fis-index-block = <0x7f>;
				};
			};
		};

		pci@c0000000 {
			status = "ok";

			/*
			 * Taken from IXDPG425 PCI boardfile.
			 * We have slots (IDSEL) 12, 13 and 14 with one assigned IRQ
			 * for 12 & 13 and one for 14.
			 */
			interrupt-map =
			/* IDSEL 12 */
			<0x6000 0 0 1 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 12 is irq 7 */
			<0x6000 0 0 2 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 12 is irq 7 */
			<0x6000 0 0 3 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 12 is irq 7 */
			<0x6000 0 0 4 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 12 is irq 7 */
			/* IDSEL 13 */
			<0x6800 0 0 1 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 13 is irq 7 */
			<0x6800 0 0 2 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 13 is irq 7 */
			<0x6800 0 0 3 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 13 is irq 7 */
			<0x6800 0 0 4 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 13 is irq 7 */
			/* IDSEL 14 */
			<0x7000 0 0 1 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 14 is irq 6 */
			<0x7000 0 0 2 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 14 is irq 6 */
			<0x7000 0 0 3 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 14 is irq 6 */
			<0x7000 0 0 4 &gpio0 6 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 14 is irq 6 */
		};

		/*
		 * CHECKME: this ethernet setup seems dubious. Photos of the board shows some kind
		 * of Realtek DSA switch on the board.
		 */

		/* EthB */
		ethernet@c8009000 {
			status = "ok";
			queue-rx = <&qmgr 3>;
			queue-txready = <&qmgr 20>;
			phy-mode = "rgmii";
			phy-handle = <&phy5>;

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

				phy4: ethernet-phy@4 {
					reg = <4>;
				};

				phy5: ethernet-phy@5 {
					reg = <5>;
				};
			};
		};

		/* EthC */
		ethernet@c800a000 {
			status = "ok";
			queue-rx = <&qmgr 4>;
			queue-txready = <&qmgr 21>;
			phy-mode = "rgmii";
			phy-handle = <&phy4>;
		};
	};
};