ARK-OS/arkos/kernel/drivers/misc/lan966x_pci.dtso

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2022 Microchip UNG
 */

#include <dt-bindings/clock/microchip,lan966x.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/mfd/atmel-flexcom.h>
#include <dt-bindings/phy/phy-lan966x-serdes.h>

/dts-v1/;
/plugin/;

/ {
	fragment@0 {
		target-path = "";

		/*
		 * These properties allow to avoid a dtc warnings.
		 * The real interrupt controller is the PCI device itself. It
		 * is the node on which the device tree overlay will be applied.
		 * This node has those properties.
		 */
		#interrupt-cells = <1>;
		interrupt-controller;

		__overlay__ {
			#address-cells = <3>;
			#size-cells = <2>;

			cpu_clk: clock-600000000 {
				compatible = "fixed-clock";
				#clock-cells = <0>;
				clock-frequency = <600000000>;  /* CPU clock = 600MHz */
			};

			ddr_clk: clock-30000000 {
				compatible = "fixed-clock";
				#clock-cells = <0>;
				clock-frequency = <30000000>;  /* Fabric clock = 30MHz */
			};

			sys_clk: clock-15625000 {
				compatible = "fixed-clock";
				#clock-cells = <0>;
				clock-frequency = <15625000>;  /* System clock = 15.625MHz */
			};

			pci-ep-bus@0 {
				compatible = "simple-bus";
				#address-cells = <1>;
				#size-cells = <1>;

				/*
				 * map @0xe2000000 (32MB) to BAR0 (CPU)
				 * map @0xe0000000 (16MB) to BAR1 (AMBA)
				 */
				ranges = <0xe2000000 0x00 0x00 0x00 0x2000000
				          0xe0000000 0x01 0x00 0x00 0x1000000>;

				oic: oic@e00c0120 {
					compatible = "microchip,lan966x-oic";
					#interrupt-cells = <2>;
					interrupt-controller;
					interrupts = <0>; /* PCI INTx assigned interrupt */
					reg = <0xe00c0120 0x190>;
				};

				cpu_ctrl: syscon@e00c0000 {
					compatible = "microchip,lan966x-cpu-syscon", "syscon";
					reg = <0xe00c0000 0xa8>;
				};

				reset: reset@e200400c {
					compatible = "microchip,lan966x-switch-reset";
					reg = <0xe200400c 0x4>, <0xe00c0000 0xa8>;
					reg-names = "gcb","cpu";
					#reset-cells = <1>;
					cpu-syscon = <&cpu_ctrl>;
				};

				gpio: pinctrl@e2004064 {
					compatible = "microchip,lan966x-pinctrl";
					reg = <0xe2004064 0xb4>,
					      <0xe2010024 0x138>;
					resets = <&reset 0>;
					reset-names = "switch";
					gpio-controller;
					#gpio-cells = <2>;
					gpio-ranges = <&gpio 0 0 78>;
					interrupt-parent = <&oic>;
					interrupt-controller;
					interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
					#interrupt-cells = <2>;

					tod_pins: tod_pins {
						pins = "GPIO_36";
						function = "ptpsync_1";
					};

					fc0_a_pins: fcb4-i2c-pins {
						/* RXD, TXD */
						pins = "GPIO_9", "GPIO_10";
						function = "fc0_a";
					};

				};

				serdes: serdes@e202c000 {
					compatible = "microchip,lan966x-serdes";
					reg = <0xe202c000 0x9c>,
					      <0xe2004010 0x4>;
					#phy-cells = <2>;
				};

				mdio1: mdio@e200413c {
					#address-cells = <1>;
					#size-cells = <0>;
					compatible = "microchip,lan966x-miim";
					reg = <0xe200413c 0x24>,
					      <0xe2010020 0x4>;

					resets = <&reset 0>;
					reset-names = "switch";

					lan966x_phy0: ethernet-lan966x_phy@1 {
						reg = <1>;
					};

					lan966x_phy1: ethernet-lan966x_phy@2 {
						reg = <2>;
					};
				};

				switch: switch@e0000000 {
					compatible = "microchip,lan966x-switch";
					reg = <0xe0000000 0x0100000>,
					      <0xe2000000 0x0800000>;
					reg-names = "cpu", "gcb";

					interrupt-parent = <&oic>;
					interrupts = <12 IRQ_TYPE_LEVEL_HIGH>,
						     <9 IRQ_TYPE_LEVEL_HIGH>;
					interrupt-names = "xtr", "ana";

					resets = <&reset 0>;
					reset-names = "switch";

					pinctrl-names = "default";
					pinctrl-0 = <&tod_pins>;

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

						port0: port@0 {
							phy-handle = <&lan966x_phy0>;

							reg = <0>;
							phy-mode = "gmii";
							phys = <&serdes 0 CU(0)>;
						};

						port1: port@1 {
							phy-handle = <&lan966x_phy1>;

							reg = <1>;
							phy-mode = "gmii";
							phys = <&serdes 1 CU(1)>;
						};
					};
				};
			};
		};
	};
};