linux/linux-5.18.11/arch/arm/boot/dts/intel-ixp4xx.dtsi

// SPDX-License-Identifier: ISC
/*
 * Device Tree file for Intel XScale Network Processors
 * in the IXP 4xx series.
 */
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>

/ {
	soc {
		#address-cells = <1>;
		#size-cells = <1>;
		ranges;
		compatible = "simple-bus";
		interrupt-parent = <&intcon>;

		/*
		 * The IXP4xx expansion bus is a set of up to 7 each up to 16MB
		 * windows in the 256MB space from 0x50000000 to 0x5fffffff.
		 */
		bus@c4000000 {
			/* compatible and reg filled in by per-soc device tree */
			native-endian;
			#address-cells = <2>;
			#size-cells = <1>;
			ranges = <0 0x0 0x50000000 0x01000000>,
				 <1 0x0 0x51000000 0x01000000>,
				 <2 0x0 0x52000000 0x01000000>,
				 <3 0x0 0x53000000 0x01000000>,
				 <4 0x0 0x54000000 0x01000000>,
				 <5 0x0 0x55000000 0x01000000>,
				 <6 0x0 0x56000000 0x01000000>,
				 <7 0x0 0x57000000 0x01000000>;
			dma-ranges = <0 0x0 0x50000000 0x01000000>,
				 <1 0x0 0x51000000 0x01000000>,
				 <2 0x0 0x52000000 0x01000000>,
				 <3 0x0 0x53000000 0x01000000>,
				 <4 0x0 0x54000000 0x01000000>,
				 <5 0x0 0x55000000 0x01000000>,
				 <6 0x0 0x56000000 0x01000000>,
				 <7 0x0 0x57000000 0x01000000>;
		};

		qmgr: queue-manager@60000000 {
			compatible = "intel,ixp4xx-ahb-queue-manager";
			reg = <0x60000000 0x4000>;
			interrupts = <3 IRQ_TYPE_LEVEL_HIGH>, <4 IRQ_TYPE_LEVEL_HIGH>;
		};

		pci@c0000000 {
			/* compatible filled in by per-soc device tree */
			reg = <0xc0000000 0x1000>;
			interrupts = <8 IRQ_TYPE_LEVEL_HIGH>,
				     <9 IRQ_TYPE_LEVEL_HIGH>,
				     <10 IRQ_TYPE_LEVEL_HIGH>;
			#address-cells = <3>;
			#size-cells = <2>;
			device_type = "pci";
			bus-range = <0x00 0xff>;
			status = "disabled";

			ranges =
			/*
			 * 64MB 32bit non-prefetchable memory 0x48000000-0x4bffffff
			 * done in 4 chunks of 16MB each.
			 */
			<0x02000000 0 0x48000000 0x48000000 0 0x04000000>,
			/* 64KB I/O space at 0x4c000000 */
			<0x01000000 0 0x00000000 0x4c000000 0 0x00010000>;

			/*
			 * This needs to map to the start of physical memory so
			 * PCI devices can see all (hopefully) memory. This is done
			 * using 4 1:1 16MB windows, so the RAM should not be more than
			 * 64 MB for this to work. If your memory is anywhere else
			 * than at 0x0 you need to alter this.
			 */
			dma-ranges =
			<0x02000000 0 0x00000000 0x00000000 0 0x04000000>;

			/* Each unique DTS using PCI must specify the swizzling */
		};

		uart0: serial@c8000000 {
			compatible = "intel,xscale-uart";
			reg = <0xc8000000 0x1000>;
			/*
			 * The reg-offset and reg-shift is a side effect
			 * of running the platform in big endian mode.
			 */
			reg-offset = <3>;
			reg-shift = <2>;
			interrupts = <15 IRQ_TYPE_LEVEL_HIGH>;
			clock-frequency = <14745600>;
			no-loopback-test;
		};

		uart1: serial@c8001000 {
			compatible = "intel,xscale-uart";
			reg = <0xc8001000 0x1000>;
			/*
			 * The reg-offset and reg-shift is a side effect
			 * of running the platform in big endian mode.
			 */
			reg-offset = <3>;
			reg-shift = <2>;
			interrupts = <13 IRQ_TYPE_LEVEL_HIGH>;
			clock-frequency = <14745600>;
			no-loopback-test;
		};

		gpio0: gpio@c8004000 {
			compatible = "intel,ixp4xx-gpio";
			reg = <0xc8004000 0x1000>;
			gpio-controller;
			#gpio-cells = <2>;
			interrupt-controller;
			#interrupt-cells = <2>;
		};

		intcon: interrupt-controller@c8003000 {
			/*
			 * Note: no compatible string. The subvariant of the
			 * chip needs to define what version it is. The
			 * location of the interrupt controller is fixed in
			 * memory across all variants.
			 */
			reg = <0xc8003000 0x100>;
			interrupt-controller;
			#interrupt-cells = <2>;
		};

		timer@c8005000 {
			compatible = "intel,ixp4xx-timer";
			reg = <0xc8005000 0x100>;
			interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
		};

		npe: npe@c8006000 {
			compatible = "intel,ixp4xx-network-processing-engine";
			reg = <0xc8006000 0x1000>, <0xc8007000 0x1000>, <0xc8008000 0x1000>;
			#address-cells = <1>;
			#size-cells = <0>;

			/* NPE-A contains two high-speed serial links */
			hss@0 {
				compatible = "intel,ixp4xx-hss";
				reg = <0>;
				intel,npe-handle = <&npe 0>;
				status = "disabled";
			};

			hss@1 {
				compatible = "intel,ixp4xx-hss";
				reg = <1>;
				intel,npe-handle = <&npe 0>;
				status = "disabled";
			};

			/* NPE-C contains a crypto accelerator */
			crypto {
				compatible = "intel,ixp4xx-crypto";
				intel,npe-handle = <&npe 2>;
				queue-rx = <&qmgr 30>;
				queue-txready = <&qmgr 29>;
			};
		};

		/* This is known as EthB */
		ethernet@c8009000 {
			compatible = "intel,ixp4xx-ethernet";
			reg = <0xc8009000 0x1000>;
			status = "disabled";
			/* Dummy values that depend on firmware */
			queue-rx = <&qmgr 3>;
			queue-txready = <&qmgr 20>;
			intel,npe-handle = <&npe 1>;
		};

		/* This is known as EthC */
		ethernet@c800a000 {
			compatible = "intel,ixp4xx-ethernet";
			reg = <0xc800a000 0x1000>;
			status = "disabled";
			/* Dummy values that depend on firmware */
			queue-rx = <&qmgr 0>;
			queue-txready = <&qmgr 0>;
			intel,npe-handle = <&npe 2>;
		};

		/* This is known as EthA */
		ethernet@c800c000 {
			compatible = "intel,ixp4xx-ethernet";
			reg = <0xc800c000 0x1000>;
			status = "disabled";
			intel,npe = <0>;
			/* Dummy values that depend on firmware */
			queue-rx = <&qmgr 0>;
			queue-txready = <&qmgr 0>;
		};
	};
};