1 /*
2 * Device Tree common file for gpio-fan on Buffalo Linkstation
3 *
4 * Copyright (C) 2015, 2016
5 * Roger Shimizu <rogershimizu@gmail.com>
6 *
7 * This file is dual-licensed: you can use it either under the terms
8 * of the GPL or the X11 license, at your option. Note that this dual
9 * licensing only applies to this file, and not this project as a
10 * whole.
11 *
12 * a) This file is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of the
15 * License, or (at your option) any later version.
16 *
17 * This file is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * Or, alternatively,
23 *
24 * b) Permission is hereby granted, free of charge, to any person
25 * obtaining a copy of this software and associated documentation
26 * files (the "Software"), to deal in the Software without
27 * restriction, including without limitation the rights to use,
28 * copy, modify, merge, publish, distribute, sublicense, and/or
29 * sell copies of the Software, and to permit persons to whom the
30 * Software is furnished to do so, subject to the following
31 * conditions:
32 *
33 * The above copyright notice and this permission notice shall be
34 * included in all copies or substantial portions of the Software.
35 *
36 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
37 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
38 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
39 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
40 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
41 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
42 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
43 * OTHER DEALINGS IN THE SOFTWARE.
44 */
45
46 / {
47 gpio_fan {
48 compatible = "gpio-fan";
49 pinctrl-0 = <&pmx_fan_low &pmx_fan_high &pmx_fan_lock>;
50 pinctrl-names = "default";
51
52 gpio-fan,speed-map =
53 < 0 3>,
54 <1500 2>,
55 <3250 1>,
56 <5000 0>;
57 };
58 };
59
60 &pinctrl {
61 pmx_fan_low: pmx-fan-low {
62 marvell,function = "gpio";
63 };
64
65 pmx_fan_high: pmx-fan-high {
66 marvell,function = "gpio";
67 };
68
69 pmx_fan_lock: pmx-fan-lock {
70 marvell,function = "gpio";
71 };
72 };
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