linux_dsm_epyc7002/arch/arm/boot/dts/integratorcp.dts

/*
 * Device Tree for the ARM Integrator/CP platform
 */

/dts-v1/;
/include/ "integrator.dtsi"

/ {
	model = "ARM Integrator/CP";
	compatible = "arm,integrator-cp";

	chosen {
		bootargs = "root=/dev/ram0 console=ttyAMA0,38400n8 earlyprintk";
	};

	/*
	 * The Integrator/CP overall clocking architecture can be found in
	 * ARM DUI 0184B page 7-28 "Integrator/CP922T system clocks" which
	 * appear to illustrate the layout used in most configurations.
	 */

	/* The codec chrystal operates at 24.576 MHz */
	xtal_codec: xtal24.576@24.576M {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <24576000>;
	};

	/* The chrystal is divided by 2 by the codec for the AACI bit clock */
	aaci_bitclk: aaci_bitclk@12.288M {
		#clock-cells = <0>;
		compatible = "fixed-factor-clock";
		clock-div = <2>;
		clock-mult = <1>;
		clocks = <&xtal_codec>;
	};

	/* This is a 25MHz chrystal on the base board */
	xtal25mhz: xtal25mhz@25M {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <25000000>;
	};

	/* The UART clock is 14.74 MHz divided from 25MHz by an ICS525 */
	uartclk: uartclk@14.74M {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <14745600>;
	};

	/* Actually sysclk I think */
	pclk: pclk@0 {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <0>;
	};

	core-module@10000000 {
		/* 24 MHz chrystal on the core module */
		xtal24mhz: xtal24mhz@24M {
			#clock-cells = <0>;
			compatible = "fixed-clock";
			clock-frequency = <24000000>;
		};

		/*
		 * External oscillator on the core module, usually used
		 * to drive video circuitry. Driven from the 24MHz clock.
		 */
		auxosc: cm_aux_osc@25M {
			#clock-cells = <0>;
			compatible = "arm,integrator-cm-auxosc";
			clocks = <&xtal24mhz>;
		};

		/* The KMI clock is the 24 MHz oscillator divided to 8MHz */
		kmiclk: kmiclk@1M {
			#clock-cells = <0>;
			compatible = "fixed-factor-clock";
			clock-div = <3>;
			clock-mult = <1>;
			clocks = <&xtal24mhz>;
		};

		/* The timer clock is the 24 MHz oscillator divided to 1MHz */
		timclk: timclk@1M {
			#clock-cells = <0>;
			compatible = "fixed-factor-clock";
			clock-div = <24>;
			clock-mult = <1>;
			clocks = <&xtal24mhz>;
		};
	};

	syscon {
		compatible = "arm,integrator-cp-syscon";
		reg = <0xcb000000 0x100>;
	};

	timer0: timer@13000000 {
		/* TIMER0 runs directly on the 25MHz chrystal */
		compatible = "arm,integrator-cp-timer";
		clocks = <&xtal25mhz>;
	};

	timer1: timer@13000100 {
		/* TIMER1 runs @ 1MHz */
		compatible = "arm,integrator-cp-timer";
		clocks = <&timclk>;
	};

	timer2: timer@13000200 {
		/* TIMER2 runs @ 1MHz */
		compatible = "arm,integrator-cp-timer";
		clocks = <&timclk>;
	};

	pic: pic@14000000 {
		valid-mask = <0x1fc003ff>;
	};

	cic: cic@10000040 {
		compatible = "arm,versatile-fpga-irq";
		#interrupt-cells = <1>;
		interrupt-controller;
		reg = <0x10000040 0x100>;
		clear-mask = <0xffffffff>;
		valid-mask = <0x00000007>;
	};

	/* The SIC is cascaded off IRQ 26 on the PIC */
	sic: sic@ca000000 {
		compatible = "arm,versatile-fpga-irq";
		interrupt-parent = <&pic>;
		interrupts = <26>;
		#interrupt-cells = <1>;
		interrupt-controller;
		reg = <0xca000000 0x100>;
		clear-mask = <0x00000fff>;
		valid-mask = <0x00000fff>;
	};

	ethernet@c8000000 {
		compatible = "smsc,lan91c111";
		reg = <0xc8000000 0x10>;
		interrupt-parent = <&pic>;
		interrupts = <27>;
	};

	fpga {
		/*
		 * These PrimeCells are at the same location and using
		 * the same interrupts in all Integrators, but in the CP
		 * slightly newer versions are deployed.
		 */
		rtc@15000000 {
			compatible = "arm,pl031", "arm,primecell";
			clocks = <&pclk>;
			clock-names = "apb_pclk";
		};

		uart@16000000 {
			compatible = "arm,pl011", "arm,primecell";
			clocks = <&uartclk>, <&pclk>;
			clock-names = "uartclk", "apb_pclk";
		};

		uart@17000000 {
			compatible = "arm,pl011", "arm,primecell";
			clocks = <&uartclk>, <&pclk>;
			clock-names = "uartclk", "apb_pclk";
		};

		kmi@18000000 {
			compatible = "arm,pl050", "arm,primecell";
			clocks = <&kmiclk>, <&pclk>;
			clock-names = "KMIREFCLK", "apb_pclk";
		};

		kmi@19000000 {
			compatible = "arm,pl050", "arm,primecell";
			clocks = <&kmiclk>, <&pclk>;
			clock-names = "KMIREFCLK", "apb_pclk";
		};

		/*
		 * These PrimeCells are only available on the Integrator/CP
		 */
		mmc@1c000000 {
			compatible = "arm,pl180", "arm,primecell";
			reg = <0x1c000000 0x1000>;
			interrupts = <23 24>;
			max-frequency = <515633>;
			clocks = <&uartclk>, <&pclk>;
			clock-names = "mclk", "apb_pclk";
		};

		aaci@1d000000 {
			compatible = "arm,pl041", "arm,primecell";
			reg = <0x1d000000 0x1000>;
			interrupts = <25>;
			clocks = <&pclk>;
			clock-names = "apb_pclk";
		};

		clcd@c0000000 {
			compatible = "arm,pl110", "arm,primecell";
			reg = <0xC0000000 0x1000>;
			interrupts = <22>;
			clocks = <&auxosc>, <&pclk>;
			clock-names = "clcd", "apb_pclk";
		};
	};
};