linux-zen-server/arch/arm/boot/dts/gemini-sq201.dts

// SPDX-License-Identifier: GPL-2.0
/*
 * Device Tree file for ITian Square One SQ201 NAS
 */

/dts-v1/;

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

/ {
	model = "ITian Square One SQ201";
	compatible = "itian,sq201", "cortina,gemini";
	#address-cells = <1>;
	#size-cells = <1>;

	memory@0 { /* 128 MB */
		device_type = "memory";
		reg = <0x00000000 0x8000000>;
	};

	chosen {
		bootargs = "console=ttyS0,115200n8 root=/dev/mtdblock2 rw rootfstype=squashfs,jffs2 rootwait";
		stdout-path = &uart0;
	};

	gpio_keys {
		compatible = "gpio-keys";

		button-setup {
			debounce-interval = <100>;
			wakeup-source;
			linux,code = <KEY_SETUP>;
			label = "factory reset";
			/* Conflict with NAND flash */
			gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
		};
	};

	leds {
		compatible = "gpio-leds";
		led-green-info {
			label = "sq201:green:info";
			gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
			default-state = "on";
			linux,default-trigger = "heartbeat";
		};
		led-green-usb {
			label = "sq201:green:usb";
			gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>;
			default-state = "off";
			linux,default-trigger = "usb-host";
		};
	};

	mdio0: mdio {
		compatible = "virtual,mdio-gpio";
		/* Uses MDC and MDIO */
		gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>, /* MDC */
			<&gpio0 21 GPIO_ACTIVE_HIGH>; /* MDIO */
		#address-cells = <1>;
		#size-cells = <0>;

		/* This is a Marvell 88E1111 ethernet transciever */
		phy0: ethernet-phy@1 {
			reg = <1>;
		};
	};

	spi {
		compatible = "spi-gpio";
		#address-cells = <1>;
		#size-cells = <0>;
		/* Check pin collisions */
		sck-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
		miso-gpios = <&gpio1 30 GPIO_ACTIVE_HIGH>;
		mosi-gpios = <&gpio1 29 GPIO_ACTIVE_HIGH>;
		cs-gpios = <&gpio1 31 GPIO_ACTIVE_HIGH>;
		num-chipselects = <1>;

		switch@0 {
			compatible = "vitesse,vsc7395";
			reg = <0>;
			/* Specified for 2.5 MHz or below */
			spi-max-frequency = <2500000>;
			gpio-controller;
			#gpio-cells = <2>;

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

				port@0 {
					reg = <0>;
					label = "lan1";
				};
				port@1 {
					reg = <1>;
					label = "lan2";
				};
				port@2 {
					reg = <2>;
					label = "lan3";
				};
				port@3 {
					reg = <3>;
					label = "lan4";
				};
				vsc: port@6 {
					reg = <6>;
					label = "cpu";
					ethernet = <&gmac1>;
					phy-mode = "rgmii";
					fixed-link {
						speed = <1000>;
						full-duplex;
						pause;
					};
				};
			};
		};
	};


	soc {
		flash@30000000 {
			status = "okay";
			pinctrl-names = "enabled", "disabled";
			pinctrl-0 = <&pflash_default_pins>;
			pinctrl-1 = <&pflash_disabled_pins>;
			/* 16MB of flash */
			reg = <0x30000000 0x01000000>;

			partitions {
				compatible = "redboot-fis";
				/* Eraseblock at 0xfe0000 */
				fis-index-block = <0x1fc>;
			};
		};

		syscon: syscon@40000000 {
			pinctrl {
				/*
				 * gpio0fgrp cover line 18 used by reset button
				 * gpio0ggrp cover line 20 used by info LED
				 * gpio0hgrp cover line 21, 22 used by MDIO for Marvell PHY
				 * gpio0kgrp cover line 31 used by USB LED
				 */
				gpio0_default_pins: pinctrl-gpio0 {
					mux {
						function = "gpio0";
						groups = "gpio0fgrp",
						"gpio0hgrp";
					};
				};
				/*
				 * gpio0dgrp cover lines used by the SPI
				 * to the Vitesse G5x chip.
				 */
				gpio1_default_pins: pinctrl-gpio1 {
					mux {
						function = "gpio1";
						groups = "gpio1dgrp";
					};
				};
				/*
				 * These GPIO groups will be mapped in over some
				 * of the flash pins when the flash is not in
				 * active use.
				 */
				pflash_disabled_pins: pinctrl-pflash-disabled {
					mux {
						function = "gpio0";
						groups = "gpio0ggrp", "gpio0igrp", "gpio0jgrp",
							 "gpio0kgrp";
					};
				};
				pinctrl-gmii {
					mux {
						function = "gmii";
						groups = "gmii_gmac0_grp", "gmii_gmac1_grp";
					};
					/* Settings come from memory dump in PLATO */
					conf0 {
						pins = "V8 GMAC0 RXDV";
						skew-delay = <0>;
					};
					conf1 {
						pins = "Y7 GMAC0 RXC";
						skew-delay = <15>;
					};
					conf2 {
						pins = "T8 GMAC0 TXEN";
						skew-delay = <7>;
					};
					conf3 {
						pins = "U8 GMAC0 TXC";
						skew-delay = <10>;
					};
					conf4 {
						pins = "T10 GMAC1 RXDV";
						skew-delay = <7>;
					};
					conf5 {
						pins = "Y11 GMAC1 RXC";
						skew-delay = <8>;
					};
					conf6 {
						pins = "W11 GMAC1 TXEN";
						skew-delay = <7>;
					};
					conf7 {
						pins = "V11 GMAC1 TXC";
						skew-delay = <5>;
					};
					conf8 {
						/* The data lines all have default skew */
						pins = "W8 GMAC0 RXD0", "V9 GMAC0 RXD1",
						       "Y8 GMAC0 RXD2", "U9 GMAC0 RXD3",
						       "T7 GMAC0 TXD0", "U6 GMAC0 TXD1",
						       "V7 GMAC0 TXD2", "U7 GMAC0 TXD3",
						       "Y12 GMAC1 RXD0", "V12 GMAC1 RXD1",
						       "T11 GMAC1 RXD2", "W12 GMAC1 RXD3",
						       "U10 GMAC1 TXD0", "Y10 GMAC1 TXD1",
						       "W10 GMAC1 TXD2", "T9 GMAC1 TXD3";
						skew-delay = <7>;
					};
					/* Set up drive strength on GMAC0 and GMAC1 to 16 mA */
					conf9 {
						groups = "gmii_gmac0_grp", "gmii_gmac1_grp";
						drive-strength = <16>;
					};
				};
			};
		};

		sata: sata@46000000 {
			cortina,gemini-ata-muxmode = <0>;
			cortina,gemini-enable-sata-bridge;
			status = "okay";
		};

		gpio0: gpio@4d000000 {
			pinctrl-names = "default";
			pinctrl-0 = <&gpio0_default_pins>;
		};

		gpio1: gpio@4e000000 {
			pinctrl-names = "default";
			pinctrl-0 = <&gpio1_default_pins>;
		};

		pci@50000000 {
			status = "okay";
		};

		ethernet@60000000 {
			status = "okay";

			ethernet-port@0 {
				phy-mode = "rgmii";
				phy-handle = <&phy0>;
			};
			ethernet-port@1 {
				phy-mode = "rgmii";
				fixed-link {
					speed = <1000>;
					full-duplex;
					pause;
				};
			};
		};

		ide@63000000 {
			status = "okay";
		};

		usb@68000000 {
			status = "okay";
		};

		usb@69000000 {
			status = "okay";
		};
	};
};