1/* 2 * Device Tree file for Compulab SBC-A510 Single Board Computer 3 * 4 * Copyright (C) 2015, Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> 5 * 6 * This file is dual-licensed: you can use it either under the terms 7 * of the GPL or the X11 license, at your option. Note that this dual 8 * licensing only applies to this file, and not this project as a 9 * whole. 10 * 11 * a) This file is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; version 2 of the 14 * License. 15 * 16 * This file is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * Or, alternatively, 22 * 23 * b) Permission is hereby granted, free of charge, to any person 24 * obtaining a copy of this software and associated documentation 25 * files (the "Software"), to deal in the Software without 26 * restriction, including without limitation the rights to use, 27 * copy, modify, merge, publish, distribute, sublicense, and/or 28 * sell copies of the Software, and to permit persons to whom the 29 * Software is furnished to do so, subject to the following 30 * conditions: 31 * 32 * The above copyright notice and this permission notice shall be 33 * included in all copies or substantial portions of the Software. 34 * 35 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 36 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 37 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 38 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 39 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 40 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 41 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 42 * OTHER DEALINGS IN THE SOFTWARE. 43 */ 44 45/* 46 * SBC-A510 comprises a PCA9555 I2C GPIO expander its GPIO lines connected to 47 * 48 * 0.0 USB0 VBUS_EN (active high) 49 * 0.1 USB0 VBUS_GOOD 50 * 0.2 DVI transmitter TI TFP410 MSEN 51 * 0.3 DVI transmitter TI TFP410 PD# (active low power down) 52 * 0.4 LVDS transmitter DS90C365 PD# (active low power down) 53 * 0.5 LCD nRST (active low reset) 54 * 0.6 PCIe0 nRST (active low reset) 55 * 0.7 mini-PCIe slot W_DISABLE# 56 * 57 * 1.0 MMC WP 58 * 1.1 Camera Input FPC FLASH_STB and P21.5 59 * 1.2 Camera Input FPC WE and P21.22 60 * 1.3 MMC VCC_EN (active high) and P21.7 61 * 1.4 Camera Input FPC AFTR_RST and P21.17 62 * 1.5 Camera Input FPC OE and P21.19 63 * 1.6 Camera Input FPC SNPSHT and P21.6 64 * 1.7 Camera Input FPC SHTR and P21.10 65 */ 66 67/dts-v1/; 68 69#include "dove-cm-a510.dtsi" 70 71/ { 72 model = "Compulab SBC-A510"; 73 compatible = "compulab,sbc-a510", "compulab,cm-a510", "marvell,dove"; 74 75 chosen { 76 stdout-path = &uart0; 77 }; 78 79 regulators { 80 usb0_power: regulator@2 { 81 compatible = "regulator-fixed"; 82 regulator-name = "USB Power"; 83 regulator-min-microvolt = <5000000>; 84 regulator-max-microvolt = <5000000>; 85 gpio = <&gpio_ext 0 GPIO_ACTIVE_HIGH>; 86 }; 87 88 mmc_power: regulator@3 { 89 compatible = "regulator-fixed"; 90 regulator-name = "MMC Power"; 91 regulator-min-microvolt = <3300000>; 92 regulator-max-microvolt = <3300000>; 93 gpio = <&gpio_ext 13 GPIO_ACTIVE_HIGH>; 94 }; 95 }; 96}; 97 98/* Ethernet0 depends on CM-A510 option E1 */ 99&mdio { status = "disabled"; }; 100ð { status = "disabled"; }; 101ðphy { status = "disabled"; }; 102 103/* 104 * USB port 0 can be powered and monitored by I2C GPIO expander: 105 * VBUS_ENABLE on GPIO0, VBUS_GOOD on GPIO1 106 */ 107&ehci0 { 108 status = "okay"; 109 vbus-supply = <&usb0_power>; 110}; 111 112/* USB port 1 (and ports 2, 3 if CM-A510 has U4 option) */ 113&ehci1 { status = "okay"; }; 114 115/* 116 * I2C bus layout: 117 * i2c0: 118 * - Audio Codec, 0x1a (option from CM-A510) 119 * - DVI transmitter TI TFP410, 0x39 120 * - HDMI/DVI DDC channel 121 * i2c1: 122 * - GPIO expander, NXP PCA9555, 0x20 123 * - VGA DDC channel 124 */ 125&i2c { 126 pinctrl-0 = <&pmx_i2c1>; 127 pinctrl-names = "default"; 128}; 129 130&i2c0 { 131 /* TI TFP410 DVI transmitter */ 132 dvi: video@39 { 133 compatible = "ti,tfp410"; 134 reg = <0x39>; 135 powerdown-gpio = <&gpio_ext 3 GPIO_ACTIVE_LOW>; 136 }; 137}; 138 139&i2c1 { 140 status = "okay"; 141 142 /* NXP PCA9555 GPIO expander */ 143 gpio_ext: gpio@20 { 144 compatible = "nxp,pca9555"; 145 reg = <0x20>; 146 gpio-controller; 147 #gpio-cells = <2>; 148 }; 149}; 150 151&pcie { status = "okay"; }; 152 153/* 154 * PCIe0 can be configured by Jumper E1 to be either connected to 155 * a mini-PCIe slot or a Pericom PI7C9X111 PCIe-to-PCI bridge. 156 */ 157&pcie0 { 158 status = "okay"; 159 pinctrl-0 = <&pmx_pcie0_clkreq>; 160 pinctrl-names = "default"; 161 reset-gpios = <&gpio_ext 6 GPIO_ACTIVE_LOW>; 162}; 163 164/* Ethernet1 depends on CM-A510 option E2 */ 165&pcie1 { status = "disabled"; }; 166 167/* SATA connector */ 168&sata0 { status = "okay"; }; 169 170/* 171 * SDIO0 is connected to a MMC/SD/SDIO socket, I2C GPIO expander has 172 * VCC_MMC_ENABLE on GPIO13, MMC_WP on GPIO10 173 */ 174&sdio0 { 175 vmmc-supply = <&mmc_power>; 176 wp-gpios = <&gpio_ext 10 GPIO_ACTIVE_LOW>; 177 status = "okay"; 178}; 179 180/* UART0 on RS232 mini-connector */ 181&uart0 { status = "okay"; }; 182/* UART2 on pin headers */ 183&uart2 { status = "okay"; }; 184