1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/multipl
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: I/O channel multiplexer
8
9 maintainers:
10 - Peter Rosin <peda@axentia.se>
11
12 description: |
13 If a multiplexer is used to select which har
14 e.g. an ADC channel, these bindings describe
15
16 For each non-empty string in the channels pr
17 created. The number of this io-channel is th
18 of strings in the channels property, and als
19 state. The mux controller state is described
20 Documentation/devicetree/bindings/mux/mux-co
21
22 properties:
23
24 compatible:
25 const: io-channel-mux
26
27 io-channels:
28 maxItems: 1
29 description: Channel node of the parent ch
30
31 io-channel-names:
32 const: parent
33
34 mux-controls: true
35 mux-control-names: true
36
37 channels:
38 $ref: /schemas/types.yaml#/definitions/non
39 description:
40 List of strings, labeling the mux contro
41 string for a state means that the channe
42
43 settle-time-us:
44 default: 0
45 description:
46 Time required for analog signals to sett
47
48 "#io-channel-cells":
49 const: 1
50
51 required:
52 - compatible
53 - io-channels
54 - io-channel-names
55 - mux-controls
56 - channels
57
58 additionalProperties: false
59
60 examples:
61 - |
62 #include <dt-bindings/gpio/gpio.h>
63 mux: mux-controller {
64 compatible = "gpio-mux";
65 #mux-control-cells = <0>;
66
67 mux-gpios = <&pioA 0 GPIO_ACTIVE_HIGH>,
68 <&pioA 1 GPIO_ACTIVE_HIGH>;
69 };
70
71 adc-mux {
72 compatible = "io-channel-mux";
73 io-channels = <&adc 0>;
74 io-channel-names = "parent";
75
76 mux-controls = <&mux>;
77 channels = "sync", "in", "system-regulat
78 };
79 ...
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