1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/gpio/airoha,en7523-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Airoha EN7523 GPIO controller
8
9 maintainers:
10 - John Crispin <john@phrozen.org>
11
12 description: |
13 Airoha's GPIO controller on their ARM EN7523 SoCs consists of two banks of 32
14 GPIOs.
15
16 properties:
17 $nodename:
18 pattern: "^gpio@[0-9a-f]+$"
19
20 compatible:
21 items:
22 - const: airoha,en7523-gpio
23
24 reg:
25 description: |
26 The first tuple points to the input register.
27 The second and third tuple point to the direction registers
28 The fourth tuple points to the output register
29 maxItems: 4
30
31 "#gpio-cells":
32 const: 2
33
34 gpio-controller: true
35
36 required:
37 - compatible
38 - reg
39 - "#gpio-cells"
40 - gpio-controller
41
42 additionalProperties: false
43
44 examples:
45 - |
46 gpio0: gpio@1fbf0200 {
47 compatible = "airoha,en7523-gpio";
48 reg = <0x1fbf0204 0x4>,
49 <0x1fbf0200 0x4>,
50 <0x1fbf0220 0x4>,
51 <0x1fbf0214 0x4>;
52 gpio-controller;
53 #gpio-cells = <2>;
54 };
55
56 gpio1: gpio@1fbf0270 {
57 compatible = "airoha,en7523-gpio";
58 reg = <0x1fbf0270 0x4>,
59 <0x1fbf0260 0x4>,
60 <0x1fbf0264 0x4>,
61 <0x1fbf0278 0x4>;
62 gpio-controller;
63 #gpio-cells = <2>;
64 };
65
66 ...
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