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Hans de Goede8b1ba942015-06-02 15:53:40 +02001/*
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>
Hans de Goede8b1ba942015-06-02 15:53:40 +020051
52/ {
53 model = "Allwinner A23 Evaluation Board";
54 compatible = "allwinner,sun8i-a23-evb", "allwinner,sun8i-a23";
55
56 aliases {
57 i2c0 = &i2c0;
58 i2c1 = &i2c1;
59 serial0 = &r_uart;
60 };
61
62 chosen {
63 stdout-path = "serial0:115200n8";
64 };
65};
66
67&i2c0 {
68 pinctrl-names = "default";
69 pinctrl-0 = <&i2c0_pins_a>;
70 status = "okay";
71};
72
73&i2c1 {
74 pinctrl-names = "default";
75 pinctrl-0 = <&i2c1_pins_a>;
76 status = "okay";
77};
78
79&lradc {
80 vref-supply = <&reg_vcc3v0>;
81 status = "okay";
82
83 button@190 {
84 label = "Volume Up";
85 linux,code = <KEY_VOLUMEUP>;
86 channel = <0>;
87 voltage = <190000>;
88 };
89
90 button@390 {
91 label = "Volume Down";
92 linux,code = <KEY_VOLUMEDOWN>;
93 channel = <0>;
94 voltage = <390000>;
95 };
96
97 button@600 {
98 label = "Home";
99 linux,code = <KEY_HOME>;
100 channel = <0>;
101 voltage = <600000>;
102 };
103};
104
105&mmc0 {
106 pinctrl-names = "default";
107 pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_evb>;
108 vmmc-supply = <&reg_vcc3v0>;
109 bus-width = <4>;
Jagan Teki9ad93c02018-08-05 00:40:11 +0530110 cd-gpios = <&pio 1 4 GPIO_ACTIVE_LOW>; /* PB4 */
Hans de Goede8b1ba942015-06-02 15:53:40 +0200111 status = "okay";
112};
113
114&pio {
115 mmc0_cd_pin_evb: mmc0_cd_pin@0 {
Jagan Teki9ad93c02018-08-05 00:40:11 +0530116 pins = "PB4";
117 function = "gpio_in";
118 bias-pull-up;
Hans de Goede8b1ba942015-06-02 15:53:40 +0200119 };
120};
121
122/*
123 * The RX line has a non-populated resistance. In order to use it, you
124 * need to solder R207 on the back of the board in order to close the
125 * line and get a working UART.
126 */
127&r_uart {
128 pinctrl-names = "default";
129 pinctrl-0 = <&r_uart_pins_a>;
130 status = "okay";
131};