xref: /linux/Documentation/devicetree/bindings/gpio/gpio-mxs.yaml (revision e78f70bad29c5ae1e1076698b690b15794e9b81e) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/gpio/gpio-mxs.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale MXS GPIO controller
8
9maintainers:
10  - Shawn Guo <shawnguo@kernel.org>
11
12description: |
13  The Freescale MXS GPIO controller is part of MXS PIN controller.
14  The GPIOs are organized in port/bank, each port consists of 32 GPIOs.
15  As the GPIO controller is embedded in the PIN controller and all the
16  GPIO ports share the same IO space with PIN controller, the GPIO node
17  will be represented as sub-nodes of MXS pinctrl node.
18
19properties:
20  compatible:
21    enum:
22      - fsl,imx23-pinctrl
23      - fsl,imx28-pinctrl
24
25  '#address-cells':
26    const: 1
27  '#size-cells':
28    const: 0
29
30  reg:
31    maxItems: 1
32
33patternProperties:
34  "gpio@[0-9]+$":
35    type: object
36    properties:
37      compatible:
38        enum:
39          - fsl,imx23-gpio
40          - fsl,imx28-gpio
41
42      reg:
43        maxItems: 1
44
45      interrupts:
46        description: Should be the port interrupt shared by all 32 pins.
47        maxItems: 1
48
49      interrupt-controller: true
50
51      "#interrupt-cells":
52        const: 2
53
54      "#gpio-cells":
55        const: 2
56
57      gpio-controller: true
58
59    required:
60      - compatible
61      - reg
62      - interrupts
63      - interrupt-controller
64      - "#interrupt-cells"
65      - "#gpio-cells"
66      - gpio-controller
67
68    additionalProperties: false
69
70required:
71  - compatible
72  - reg
73  - '#address-cells'
74  - '#size-cells'
75
76additionalProperties: false
77
78examples:
79  - |
80    pinctrl@80018000 {
81        #address-cells = <1>;
82        #size-cells = <0>;
83        compatible = "fsl,imx28-pinctrl";
84        reg = <0x80018000 0x2000>;
85
86        gpio@0 {
87            compatible = "fsl,imx28-gpio";
88            reg = <0>;
89            interrupts = <127>;
90            gpio-controller;
91            #gpio-cells = <2>;
92            interrupt-controller;
93            #interrupt-cells = <2>;
94        };
95
96        gpio@1 {
97            compatible = "fsl,imx28-gpio";
98            reg = <1>;
99            interrupts = <126>;
100            gpio-controller;
101            #gpio-cells = <2>;
102            interrupt-controller;
103            #interrupt-cells = <2>;
104        };
105
106        gpio@2 {
107            compatible = "fsl,imx28-gpio";
108            reg = <2>;
109            interrupts = <125>;
110            gpio-controller;
111            #gpio-cells = <2>;
112            interrupt-controller;
113            #interrupt-cells = <2>;
114        };
115
116        gpio@3 {
117            compatible = "fsl,imx28-gpio";
118            reg = <3>;
119            interrupts = <124>;
120            gpio-controller;
121            #gpio-cells = <2>;
122            interrupt-controller;
123            #interrupt-cells = <2>;
124        };
125
126        gpio@4 {
127            compatible = "fsl,imx28-gpio";
128            reg = <4>;
129            interrupts = <123>;
130            gpio-controller;
131            #gpio-cells = <2>;
132            interrupt-controller;
133            #interrupt-cells = <2>;
134        };
135    };
136