1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/adc
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: IIO Common Properties for ADC Channels
8
9 maintainers:
10 - Jonathan Cameron <jic23@kernel.org>
11
12 description:
13 A few properties are defined in a common way
14
15 properties:
16 $nodename:
17 pattern: "^channel(@[0-9a-f]+)?$"
18 description:
19 A channel index should match reg.
20
21 reg:
22 maxItems: 1
23
24 label:
25 description: Unique name to identify which
26
27 bipolar:
28 $ref: /schemas/types.yaml#/definitions/fla
29 description: If provided, the channel is t
30
31 diff-channels:
32 $ref: /schemas/types.yaml#/definitions/uin
33 maxItems: 2
34 minItems: 2
35 description:
36 Many ADCs have dual Muxes to allow diffe
37 to both the positive and negative inputs
38 The first value specifies the positive i
39 specifies the negative input pin.
40
41 single-channel:
42 $ref: /schemas/types.yaml#/definitions/uin
43 description:
44 When devices combine single-ended and di
45 channel for a single element to be speci
46 differential channels). If this and diff
47 shall be used instead.
48
49 common-mode-channel:
50 $ref: /schemas/types.yaml#/definitions/uin
51 description:
52 Some ADCs have differential input pins t
53 single-ended or pseudo-differential inpu
54 in addition to single-channel to signal
55 not differential but still specify two i
56
57 The input pair is specified by setting s
58 input pin and common-mode-channel to the
59
60 settling-time-us:
61 description:
62 Time between enabling the channel and fi
63
64 oversampling-ratio:
65 $ref: /schemas/types.yaml#/definitions/uin
66 description:
67 Oversampling is used as replacement of o
68 In some cases, the desired filtering cha
69 device design and can interact with othe
70 settling time.
71
72 anyOf:
73 - oneOf:
74 - required:
75 - reg
76 - diff-channels
77 - required:
78 - reg
79 - single-channel
80 - required:
81 - reg
82
83 additionalProperties: true
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