xref: /kernel/linux/linux-6.6/arch/powerpc/boot/dts/microwatt.dts (revision 62306a36)

/dts-v1/;

/ {
	#size-cells = <0x02>;
	#address-cells = <0x02>;
	model-name = "microwatt";
	compatible = "microwatt-soc";

	aliases {
		serial0 = &UART0;
	};

	reserved-memory {
		#size-cells = <0x02>;
		#address-cells = <0x02>;
		ranges;
	};

	memory@0 {
		device_type = "memory";
		reg = <0x00000000 0x00000000 0x00000000 0x10000000>;
	};

	clocks {
		sys_clk: litex_sys_clk {
			#clock-cells = <0>;
			compatible = "fixed-clock";
			clock-frequency = <100000000>;
		};
	};

	cpus {
		#size-cells = <0x00>;
		#address-cells = <0x01>;

		ibm,powerpc-cpu-features {
			display-name = "Microwatt";
			isa = <3000>;
			device_type = "cpu-features";
			compatible = "ibm,powerpc-cpu-features";

			mmu-radix {
				isa = <3000>;
				usable-privilege = <2>;
			};

			little-endian {
				isa = <2050>;
				usable-privilege = <3>;
				hwcap-bit-nr = <1>;
			};

			cache-inhibited-large-page {
				isa = <2040>;
				usable-privilege = <2>;
			};

			fixed-point-v3 {
				isa = <3000>;
				usable-privilege = <3>;
			};

			no-execute {
				isa = <2010>;
				usable-privilege = <2>;
			};

			floating-point {
				hwcap-bit-nr = <27>;
				isa = <0>;
				usable-privilege = <3>;
			};
		};

		PowerPC,Microwatt@0 {
			i-cache-sets = <2>;
			ibm,dec-bits = <64>;
			reservation-granule-size = <64>;
			clock-frequency = <100000000>;
			timebase-frequency = <100000000>;
			i-tlb-sets = <1>;
			ibm,ppc-interrupt-server#s = <0>;
			i-cache-block-size = <64>;
			d-cache-block-size = <64>;
			d-cache-sets = <2>;
			i-tlb-size = <64>;
			cpu-version = <0x990000>;
			status = "okay";
			i-cache-size = <0x1000>;
			ibm,processor-radix-AP-encodings = <0x0c 0xa0000010 0x20000015 0x4000001e>;
			tlb-size = <0>;
			tlb-sets = <0>;
			device_type = "cpu";
			d-tlb-size = <128>;
			d-tlb-sets = <2>;
			reg = <0>;
			general-purpose;
			64-bit;
			d-cache-size = <0x1000>;
			ibm,chip-id = <0>;
			ibm,mmu-lpid-bits = <12>;
			ibm,mmu-pid-bits = <20>;
		};
	};

	soc@c0000000 {
		compatible = "simple-bus";
		#address-cells = <1>;
		#size-cells = <1>;
		interrupt-parent = <&ICS>;

		ranges = <0 0 0xc0000000 0x40000000>;

		interrupt-controller@4000 {
			compatible = "openpower,xics-presentation", "ibm,ppc-xicp";
			ibm,interrupt-server-ranges = <0x0 0x1>;
			reg = <0x4000 0x100>;
		};

		ICS: interrupt-controller@5000 {
			compatible = "openpower,xics-sources";
			interrupt-controller;
			interrupt-ranges = <0x10 0x10>;
			reg = <0x5000 0x100>;
			#address-cells = <0>;
			#size-cells = <0>;
			#interrupt-cells = <2>;
		};

		UART0: serial@2000 {
			device_type = "serial";
			compatible = "ns16550";
			reg = <0x2000 0x8>;
			clock-frequency = <100000000>;
			current-speed = <115200>;
			reg-shift = <2>;
			fifo-size = <16>;
			interrupts = <0x10 0x1>;
		};

		ethernet@8020000 {
			compatible = "litex,liteeth";
			reg = <0x8021000 0x100
				0x8020800 0x100
				0x8030000 0x2000>;
			reg-names = "mac", "mido", "buffer";
			litex,rx-slots = <2>;
			litex,tx-slots = <2>;
			litex,slot-size = <0x800>;
			interrupts = <0x11 0x1>;
		};

		mmc@8040000 {
			compatible = "litex,mmc";
			reg = <0x8042800 0x800
				0x8041000 0x800
				0x8040800 0x800
				0x8042000 0x800
				0x8041800 0x800>;
			reg-names = "phy", "core", "reader", "writer", "irq";
			bus-width = <4>;
			interrupts = <0x13 1>;
			cap-sd-highspeed;
			clocks = <&sys_clk>;
		};
	};

	chosen {
		bootargs = "";
		ibm,architecture-vec-5 = [19 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00
					  00 00 00 00 00 00 00 00 40 00 40];
		stdout-path = &UART0;
	};
};