1/* 2 * Copyright 2015 Maxime Ripard 3 * 4 * Maxime Ripard <maxime.ripard@free-electrons.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; either version 2 of the 14 * License, or (at your option) any later version. 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/dts-v1/; 46#include "sun8i-a23.dtsi" 47#include "sunxi-common-regulators.dtsi" 48 49#include <dt-bindings/gpio/gpio.h> 50#include <dt-bindings/input/input.h> 51#include <dt-bindings/pinctrl/sun4i-a10.h> 52 53/ { 54 model = "Allwinner A23 Evaluation Board"; 55 compatible = "allwinner,sun8i-a23-evb", "allwinner,sun8i-a23"; 56 57 aliases { 58 i2c0 = &i2c0; 59 i2c1 = &i2c1; 60 serial0 = &r_uart; 61 }; 62 63 chosen { 64 stdout-path = "serial0:115200n8"; 65 }; 66}; 67 68&i2c0 { 69 pinctrl-names = "default"; 70 pinctrl-0 = <&i2c0_pins_a>; 71 status = "okay"; 72}; 73 74&i2c1 { 75 pinctrl-names = "default"; 76 pinctrl-0 = <&i2c1_pins_a>; 77 status = "okay"; 78}; 79 80&lradc { 81 vref-supply = <®_vcc3v0>; 82 status = "okay"; 83 84 button@190 { 85 label = "Volume Up"; 86 linux,code = <KEY_VOLUMEUP>; 87 channel = <0>; 88 voltage = <190000>; 89 }; 90 91 button@390 { 92 label = "Volume Down"; 93 linux,code = <KEY_VOLUMEDOWN>; 94 channel = <0>; 95 voltage = <390000>; 96 }; 97 98 button@600 { 99 label = "Home"; 100 linux,code = <KEY_HOME>; 101 channel = <0>; 102 voltage = <600000>; 103 }; 104}; 105 106&mmc0 { 107 pinctrl-names = "default"; 108 pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_evb>; 109 vmmc-supply = <®_vcc3v0>; 110 bus-width = <4>; 111 cd-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; /* PB4 */ 112 cd-inverted; 113 status = "okay"; 114}; 115 116&pio { 117 mmc0_cd_pin_evb: mmc0_cd_pin@0 { 118 allwinner,pins = "PB4"; 119 allwinner,function = "gpio_in"; 120 allwinner,drive = <SUN4I_PINCTRL_10_MA>; 121 allwinner,pull = <SUN4I_PINCTRL_PULL_UP>; 122 }; 123}; 124 125/* 126 * The RX line has a non-populated resistance. In order to use it, you 127 * need to solder R207 on the back of the board in order to close the 128 * line and get a working UART. 129 */ 130&r_uart { 131 pinctrl-names = "default"; 132 pinctrl-0 = <&r_uart_pins_a>; 133 status = "okay"; 134}; 135