alistair23-linux/arch/arm/boot/dts/armada-388-clearfog.dts

/*
 * Device Tree file for SolidRun Clearfog revision A1 rev 2.0 (88F6828)
 *
 *  Copyright (C) 2015 Russell King
 *
 * This board is in development; the contents of this file work with
 * the A1 rev 2.0 of the board, which does not represent final
 * production board.  Things will change, don't expect this file to
 * remain compatible info the future.
 *
 * This file is dual-licensed: you can use it either under the terms
 * of the GPL or the X11 license, at your option. Note that this dual
 * licensing only applies to this file, and not this project as a
 * whole.
 *
 *  a) This file is free software; you can redistribute it and/or
 *     modify it under the terms of the GNU General Public License
 *     version 2 as published by the Free Software Foundation.
 *
 *     This file is distributed in the hope that it will be useful
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 * Or, alternatively
 *
 *  b) Permission is hereby granted, free of charge, to any person
 *     obtaining a copy of this software and associated documentation
 *     files (the "Software"), to deal in the Software without
 *     restriction, including without limitation the rights to use
 *     copy, modify, merge, publish, distribute, sublicense, and/or
 *     sell copies of the Software, and to permit persons to whom the
 *     Software is furnished to do so, subject to the following
 *     conditions:
 *
 *     The above copyright notice and this permission notice shall be
 *     included in all copies or substantial portions of the Software.
 *
 *     THE SOFTWARE IS PROVIDED , WITHOUT WARRANTY OF ANY KIND
 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY
 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *     OTHER DEALINGS IN THE SOFTWARE.
 */

/dts-v1/;
#include "armada-388.dtsi"
#include "armada-38x-solidrun-microsom.dtsi"

/ {
	model = "SolidRun Clearfog A1";
	compatible = "solidrun,clearfog-a1", "marvell,armada388",
		"marvell,armada385", "marvell,armada380";

	aliases {
		/* So that mvebu u-boot can update the MAC addresses */
		ethernet1 = &eth0;
		ethernet2 = &eth1;
		ethernet3 = &eth2;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	reg_3p3v: regulator-3p3v {
		compatible = "regulator-fixed";
		regulator-name = "3P3V";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
	};

	soc {
		internal-regs {
			ethernet@30000 {
				phy-mode = "sgmii";
				buffer-manager = <&bm>;
				bm,pool-long = <2>;
				bm,pool-short = <1>;
				status = "okay";

				fixed-link {
					speed = <1000>;
					full-duplex;
				};
			};

			ethernet@34000 {
				phy-mode = "sgmii";
				buffer-manager = <&bm>;
				bm,pool-long = <3>;
				bm,pool-short = <1>;
				status = "okay";

				fixed-link {
					speed = <1000>;
					full-duplex;
				};
			};

			i2c@11000 {
				/* Is there anything on this? */
				clock-frequency = <100000>;
				pinctrl-0 = <&i2c0_pins>;
				pinctrl-names = "default";
				status = "okay";

				/*
				 * PCA9655 GPIO expander, up to 1MHz clock.
				 *  0-CON3 CLKREQ#
				 *  1-CON3 PERST#
				 *  2-CON2 PERST#
				 *  3-CON3 W_DISABLE
				 *  4-CON2 CLKREQ#
				 *  5-USB3 overcurrent
				 *  6-USB3 power
				 *  7-CON2 W_DISABLE
				 *  8-JP4 P1
				 *  9-JP4 P4
				 * 10-JP4 P5
				 * 11-m.2 DEVSLP
				 * 12-SFP_LOS
				 * 13-SFP_TX_FAULT
				 * 14-SFP_TX_DISABLE
				 * 15-SFP_MOD_DEF0
				 */
				expander0: gpio-expander@20 {
					/*
					 * This is how it should be:
					 * compatible = "onnn,pca9655",
					 *	 "nxp,pca9555";
					 * but you can't do this because of
					 * the way I2C works.
					 */
					compatible = "nxp,pca9555";
					gpio-controller;
					#gpio-cells = <2>;
					reg = <0x20>;

					pcie1_0_clkreq {
						gpio-hog;
						gpios = <0 GPIO_ACTIVE_LOW>;
						input;
						line-name = "pcie1.0-clkreq";
					};
					pcie1_0_w_disable {
						gpio-hog;
						gpios = <3 GPIO_ACTIVE_LOW>;
						output-low;
						line-name = "pcie1.0-w-disable";
					};
					pcie2_0_clkreq {
						gpio-hog;
						gpios = <4 GPIO_ACTIVE_LOW>;
						input;
						line-name = "pcie2.0-clkreq";
					};
					pcie2_0_w_disable {
						gpio-hog;
						gpios = <7 GPIO_ACTIVE_LOW>;
						output-low;
						line-name = "pcie2.0-w-disable";
					};
					usb3_ilimit {
						gpio-hog;
						gpios = <5 GPIO_ACTIVE_LOW>;
						input;
						line-name = "usb3-current-limit";
					};
					usb3_power {
						gpio-hog;
						gpios = <6 GPIO_ACTIVE_HIGH>;
						output-high;
						line-name = "usb3-power";
					};
					m2_devslp {
						gpio-hog;
						gpios = <11 GPIO_ACTIVE_HIGH>;
						output-low;
						line-name = "m.2 devslp";
					};
					sfp_los {
						/* SFP loss of signal */
						gpio-hog;
						gpios = <12 GPIO_ACTIVE_HIGH>;
						input;
						line-name = "sfp-los";
					};
					sfp_tx_fault {
						/* SFP laser fault */
						gpio-hog;
						gpios = <13 GPIO_ACTIVE_HIGH>;
						input;
						line-name = "sfp-tx-fault";
					};
					sfp_tx_disable {
						/* SFP transmit disable */
						gpio-hog;
						gpios = <14 GPIO_ACTIVE_HIGH>;
						output-low;
						line-name = "sfp-tx-disable";
					};
					sfp_mod_def0 {
						/* SFP module present */
						gpio-hog;
						gpios = <15 GPIO_ACTIVE_LOW>;
						input;
						line-name = "sfp-mod-def0";
					};
				};

				/* The MCP3021 is 100kHz clock only */
				mikrobus_adc: mcp3021@4c {
					compatible = "microchip,mcp3021";
					reg = <0x4c>;
				};

				/* Also something at 0x64 */
			};

			i2c@11100 {
				/*
				 * Routed to SFP, mikrobus, and PCIe.
				 * SFP limits this to 100kHz, and requires
				 *  an AT24C01A/02/04 with address pins tied
				 *  low, which takes addresses 0x50 and 0x51.
				 * Mikrobus doesn't specify beyond an I2C
				 *  bus being present.
				 * PCIe uses ARP to assign addresses, or
				 *  0x63-0x64.
				 */
				clock-frequency = <100000>;
				pinctrl-0 = <&clearfog_i2c1_pins>;
				pinctrl-names = "default";
				status = "okay";
			};

			pinctrl@18000 {
				clearfog_dsa0_clk_pins: clearfog-dsa0-clk-pins {
					marvell,pins = "mpp46";
					marvell,function = "ref";
				};
				clearfog_dsa0_pins: clearfog-dsa0-pins {
					marvell,pins = "mpp23", "mpp41";
					marvell,function = "gpio";
				};
				clearfog_i2c1_pins: i2c1-pins {
					/* SFP, PCIe, mSATA, mikrobus */
					marvell,pins = "mpp26", "mpp27";
					marvell,function = "i2c1";
				};
				clearfog_sdhci_cd_pins: clearfog-sdhci-cd-pins {
					marvell,pins = "mpp20";
					marvell,function = "gpio";
				};
				clearfog_sdhci_pins: clearfog-sdhci-pins {
					marvell,pins = "mpp21", "mpp28",
						       "mpp37", "mpp38",
						       "mpp39", "mpp40";
					marvell,function = "sd0";
				};
				clearfog_spi1_cs_pins: spi1-cs-pins {
					marvell,pins = "mpp55";
					marvell,function = "spi1";
				};
				mikro_pins: mikro-pins {
					/* int: mpp22 rst: mpp29 */
					marvell,pins = "mpp22", "mpp29";
					marvell,function = "gpio";
				};
				mikro_spi_pins: mikro-spi-pins {
					marvell,pins = "mpp43";
					marvell,function = "spi1";
				};
				mikro_uart_pins: mikro-uart-pins {
					marvell,pins = "mpp24", "mpp25";
					marvell,function = "ua1";
				};
				rear_button_pins: rear-button-pins {
					marvell,pins = "mpp34";
					marvell,function = "gpio";
				};
			};

			sata@a8000 {
				/* pinctrl? */
				status = "okay";
			};

			sata@e0000 {
				/* pinctrl? */
				status = "okay";
			};

			sdhci@d8000 {
				bus-width = <4>;
				cd-gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
				no-1-8-v;
				pinctrl-0 = <&clearfog_sdhci_pins
					     &clearfog_sdhci_cd_pins>;
				pinctrl-names = "default";
				status = "okay";
				vmmc = <&reg_3p3v>;
				wp-inverted;
			};

			serial@12100 {
				/* mikrobus uart */
				pinctrl-0 = <&mikro_uart_pins>;
				pinctrl-names = "default";
				status = "okay";
			};

			usb@58000 {
				/* CON3, nearest  power. */
				status = "okay";
			};

			usb3@f0000 {
				/* CON2, nearest CPU, USB2 only. */
				status = "okay";
			};

			usb3@f8000 {
				/* CON7 */
				status = "okay";
			};
		};

		pcie-controller {
			status = "okay";
			/*
			 * The two PCIe units are accessible through
			 * the mini-PCIe connectors on the board.
			 */
			pcie@2,0 {
				/* Port 1, Lane 0. CON3, nearest power. */
				reset-gpios = <&expander0 1 GPIO_ACTIVE_LOW>;
				status = "okay";
			};
			pcie@3,0 {
				/* Port 2, Lane 0. CON2, nearest CPU. */
				reset-gpios = <&expander0 2 GPIO_ACTIVE_LOW>;
				status = "okay";
			};
		};
	};

	dsa@0 {
		compatible = "marvell,dsa";
		dsa,ethernet = <&eth1>;
		dsa,mii-bus = <&mdio>;
		pinctrl-0 = <&clearfog_dsa0_clk_pins &clearfog_dsa0_pins>;
		pinctrl-names = "default";
		#address-cells = <2>;
		#size-cells = <0>;

		switch@0 {
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <4 0>;

			port@0 {
				reg = <0>;
				label = "lan5";
			};

			port@1 {
				reg = <1>;
				label = "lan4";
			};

			port@2 {
				reg = <2>;
				label = "lan3";
			};

			port@3 {
				reg = <3>;
				label = "lan2";
			};

			port@4 {
				reg = <4>;
				label = "lan1";
			};

			port@5 {
				reg = <5>;
				label = "cpu";
			};

			port@6 {
				/* 88E1512 external phy */
				reg = <6>;
				label = "lan6";
				fixed-link {
					speed = <1000>;
					full-duplex;
				};
			};
		};
	};

	gpio-keys {
		compatible = "gpio-keys";
		pinctrl-0 = <&rear_button_pins>;
		pinctrl-names = "default";

		button_0 {
			/* The rear SW3 button */
			label = "Rear Button";
			gpios = <&gpio1 2 GPIO_ACTIVE_LOW>;
			linux,can-disable;
			linux,code = <BTN_0>;
		};
	};
};

&spi1 {
	/*
	 * We don't seem to have the W25Q32 on the
	 * A1 Rev 2.0 boards, so disable SPI.
	 * CS0: W25Q32 (doesn't appear to be present)
	 * CS1:
	 * CS2: mikrobus
	 */
	pinctrl-0 = <&spi1_pins
		     &clearfog_spi1_cs_pins
		     &mikro_spi_pins>;
	pinctrl-names = "default";
	status = "okay";

	spi-flash@0 {
		#address-cells = <1>;
		#size-cells = <0>;
		compatible = "w25q32", "jedec,spi-nor";
		reg = <0>; /* Chip select 0 */
		spi-max-frequency = <3000000>;
		status = "disabled";
	};
};