arch/arm/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 <dt-bindings/input/input.h>
#include <dt-bindings/gpio/gpio.h>
#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;
		spi1 = &spi1;
		i2c0 = &i2c0;
		i2c1 = &i2c1;
	};

	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 {
			rtc@a3800 {
				/*
				 * If the rtc doesn't work, run "date reset"
				 * twice in u-boot.
				 */
				status = "okay";
			};

			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 = <&microsom_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";
			};

			usb3@f8000 {
				/* CON7, USB-A port on back of device */
				status = "okay";
			};
		};

		pcie {
			status = "okay";
			/*
			 * The two PCIe units are accessible through
			 * the mini-PCIe connectors on the board.
			 */
			pcie@2,0 {
				/* Port 1, Lane 0. CONN3, nearest power. */
				reset-gpios = <&expander0 1 GPIO_ACTIVE_LOW>;
				status = "okay";
			};
			pcie@3,0 {
				/* Port 2, Lane 0. CONN2, nearest CPU. */
				reset-gpios = <&expander0 2 GPIO_ACTIVE_LOW>;
				status = "okay";
			};
		};
	};

	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>;
		};
	};
};

&w25q32 {
	status = "okay";
};

&eth1 {
	managed = "in-band-status";
	phy-mode = "sgmii";
	status = "okay";
};

&eth2 {
	phy-mode = "sgmii";
	status = "okay";
};

&i2c0 {
	clock-frequency = <400000>;
	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";
		};
	};

	mikrobus_adc: mcp3021@4c {
		compatible = "microchip,mcp3021";
		reg = <0x4c>;
	};

	eeprom@52 {
		compatible = "atmel,24c02";
		reg = <0x52>;
		pagesize = <16>;
	};
};

&i2c1 {
	/*
	 * 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 {
	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_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";
	};
};

&spi1 {
	/*
	 * Add SPI CS pins for clearfog:
	 * CS0: W25Q32
	 * CS1:
	 * CS2: mikrobus
	 */
	pinctrl-0 = <&spi1_pins &mikro_spi_pins>;
	pinctrl-names = "default";
	status = "okay";
};

/*
+#define A38x_CUSTOMER_BOARD_1_MPP16_23         0x00400011
MPP18: gpio		? (pca9655 int?)
MPP19: gpio		? (clkreq?)
MPP20: gpio		? (sd0 detect)
MPP21: sd0:cmd		x sd0
MPP22: gpio		x mikro int
MPP23: gpio		x switch irq
+#define A38x_CUSTOMER_BOARD_1_MPP24_31         0x22043333
MPP24: ua1:rxd		x mikro rx
MPP25: ua1:txd		x mikro tx
MPP26: i2c1:sck		x mikro sck
MPP27: i2c1:sda		x mikro sda
MPP28: sd0:clk		x sd0
MPP29: gpio		x mikro rst
MPP30: ge1:txd2		? (config)
MPP31: ge1:txd3		? (config)
+#define A38x_CUSTOMER_BOARD_1_MPP32_39         0x44400002
MPP32: ge1:txctl	? (unused)
MPP33: gpio		? (pic_com0)
MPP34: gpio		x rear button (pic_com1)
MPP35: gpio		? (pic_com2)
MPP36: gpio		? (unused)
MPP37: sd0:d3		x sd0
MPP38: sd0:d0		x sd0
MPP39: sd0:d1		x sd0
+#define A38x_CUSTOMER_BOARD_1_MPP40_47         0x41144004
MPP40: sd0:d2		x sd0
MPP41: gpio		x switch reset
MPP42: gpio		? sw1-1
MPP43: spi1:cs2		x mikro cs
MPP44: sata3:prsnt	? (unused)
MPP45: ref:clk_out0	?
MPP46: ref:clk_out1	x switch clk
MPP47: 4		? (unused)
+#define A38x_CUSTOMER_BOARD_1_MPP48_55         0x40333333
MPP48: tdm:pclk
MPP49: tdm:fsync
MPP50: tdm:drx
MPP51: tdm:dtx
MPP52: tdm:int
MPP53: tdm:rst
MPP54: gpio		? (pwm)
MPP55: spi1:cs1		x slic
+#define A38x_CUSTOMER_BOARD_1_MPP56_63         0x00004444
MPP56: spi1:mosi	x mikro mosi
MPP57: spi1:sck		x mikro sck
MPP58: spi1:miso	x mikro miso
MPP59: spi1:cs0		x w25q32
*/