xref: /linux/Documentation/devicetree/bindings/pinctrl/nuvoton,wpcm450-pinctrl.yaml (revision 9a95c5bfbf02a0a7f5983280fe284a0ff0836c34) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/nuvoton,wpcm450-pinctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Nuvoton WPCM450 pin control and GPIO
8
9maintainers:
10  - Jonathan Neuschäfer <j.neuschaefer@gmx.net>
11
12properties:
13  compatible:
14    const: nuvoton,wpcm450-pinctrl
15
16  reg:
17    maxItems: 1
18
19  '#address-cells':
20    const: 1
21
22  '#size-cells':
23    const: 0
24
25patternProperties:
26  # There are three kinds of subnodes:
27  # 1. a GPIO controller node for each GPIO bank
28  # 2. a pinmux node configures pin muxing for a group of pins (e.g. rmii2)
29  # 3. a pinconf node configures properties of a single pin
30
31  "^gpio@[0-7]$":
32    type: object
33    additionalProperties: false
34
35    description:
36      Eight GPIO banks (gpio@0 to gpio@7), that each contain between 14 and 18
37      GPIOs. Some GPIOs support interrupts.
38
39    properties:
40      reg:
41        minimum: 0
42        maximum: 7
43
44      gpio-controller: true
45
46      "#gpio-cells":
47        const: 2
48
49      interrupt-controller: true
50
51      "#interrupt-cells":
52        const: 2
53
54      interrupts:
55        maxItems: 3
56        description:
57          The interrupts associated with this GPIO bank
58
59    required:
60      - reg
61      - gpio-controller
62      - '#gpio-cells'
63
64  "^mux-":
65    $ref: pinmux-node.yaml#
66
67    properties:
68      groups:
69        description:
70          One or more groups of pins to mux to a certain function
71        items:
72          enum: [ smb3, smb4, smb5, scs1, scs2, scs3, smb0, smb1, smb2, bsp,
73                  hsp1, hsp2, r1err, r1md, rmii2, r2err, r2md, kbcc, dvo,
74                  clko, smi, uinc, gspi, mben, xcs2, xcs1, sdio, sspi, fi0,
75                  fi1, fi2, fi3, fi4, fi5, fi6, fi7, fi8, fi9, fi10, fi11,
76                  fi12, fi13, fi14, fi15, pwm0, pwm1, pwm2, pwm3, pwm4, pwm5,
77                  pwm6, pwm7, hg0, hg1, hg2, hg3, hg4, hg5, hg6, hg7 ]
78      function:
79        description:
80          The function that a group of pins is muxed to
81        enum: [ smb3, smb4, smb5, scs1, scs2, scs3, smb0, smb1, smb2, bsp,
82                hsp1, hsp2, r1err, r1md, rmii2, r2err, r2md, kbcc, dvo0,
83                dvo1, dvo2, dvo3, dvo4, dvo5, dvo6, dvo7, clko, smi, uinc,
84                gspi, mben, xcs2, xcs1, sdio, sspi, fi0, fi1, fi2, fi3, fi4,
85                fi5, fi6, fi7, fi8, fi9, fi10, fi11, fi12, fi13, fi14, fi15,
86                pwm0, pwm1, pwm2, pwm3, pwm4, pwm5, pwm6, pwm7, hg0, hg1,
87                hg2, hg3, hg4, hg5, hg6, hg7, gpio ]
88
89    dependencies:
90      groups: [ function ]
91      function: [ groups ]
92
93    additionalProperties: false
94
95  "^cfg-":
96    $ref: pincfg-node.yaml#
97
98    properties:
99      pins:
100        description:
101          A list of pins to configure in certain ways, such as enabling
102          debouncing
103        items:
104          pattern: "^gpio1?[0-9]{1,2}$"
105
106      input-debounce:
107        maxItems: 1
108
109    additionalProperties: false
110
111required:
112  - compatible
113  - reg
114
115additionalProperties: false
116
117examples:
118  - |
119    #include <dt-bindings/interrupt-controller/irq.h>
120    #include <dt-bindings/gpio/gpio.h>
121    pinctrl: pinctrl@b8003000 {
122      compatible = "nuvoton,wpcm450-pinctrl";
123      reg = <0xb8003000 0x1000>;
124      #address-cells = <1>;
125      #size-cells = <0>;
126
127      gpio0: gpio@0 {
128        reg = <0>;
129        gpio-controller;
130        #gpio-cells = <2>;
131        interrupts = <2 IRQ_TYPE_LEVEL_HIGH>,
132                     <3 IRQ_TYPE_LEVEL_HIGH>,
133                     <4 IRQ_TYPE_LEVEL_HIGH>;
134      };
135
136      mux-rmii2 {
137        groups = "rmii2";
138        function = "rmii2";
139      };
140
141      pinmux_uid: mux-uid {
142        groups = "gspi", "sspi";
143        function = "gpio";
144      };
145
146      pinctrl_uid: cfg-uid {
147        pins = "gpio14";
148        input-debounce = <1>;
149      };
150    };
151
152    gpio-keys {
153      compatible = "gpio-keys";
154      pinctrl-names = "default";
155      pinctrl-0 = <&pinctrl_uid>, <&pinmux_uid>;
156
157      button-uid {
158        label = "UID";
159        linux,code = <102>;
160        gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
161      };
162    };
163