1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/ti,am3359-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: TI AM3359 ADC
8
9 maintainers:
10 - Miquel Raynal <miquel.raynal@bootlin.com>
11
12 properties:
13 compatible:
14 enum:
15 - ti,am3359-adc
16 - ti,am4372-adc
17
18 '#io-channel-cells':
19 const: 1
20
21 ti,adc-channels:
22 description: List of analog inputs available for ADC. AIN0 = 0, AIN1 = 1 and
23 so on until AIN7 = 7.
24 $ref: /schemas/types.yaml#/definitions/uint32-array
25 minItems: 1
26 maxItems: 8
27
28 ti,chan-step-opendelay:
29 description: List of open delays for each channel of ADC in the order of
30 ti,adc-channels. The value corresponds to the number of ADC clock cycles
31 to wait after applying the step configuration registers and before sending
32 the start of ADC conversion. Maximum value is 0x3FFFF.
33 $ref: /schemas/types.yaml#/definitions/uint32-array
34 minItems: 1
35 maxItems: 8
36
37 ti,chan-step-sampledelay:
38 description: List of sample delays for each channel of ADC in the order of
39 ti,adc-channels. The value corresponds to the number of ADC clock cycles
40 to sample (to hold start of conversion high). Maximum value is 0xFF.
41 $ref: /schemas/types.yaml#/definitions/uint32-array
42 minItems: 1
43 maxItems: 8
44
45 ti,chan-step-avg:
46 description: Number of averages to be performed for each channel of ADC. If
47 average is 16 (this is also the maximum) then input is sampled 16 times
48 and averaged to get more accurate value. This increases the time taken by
49 ADC to generate a sample. Maximum value is 16.
50 $ref: /schemas/types.yaml#/definitions/uint32-array
51 minItems: 1
52 maxItems: 8
53
54 required:
55 - compatible
56 - '#io-channel-cells'
57 - ti,adc-channels
58
59 additionalProperties: false
60
61 examples:
62 - |
63 adc {
64 compatible = "ti,am3359-adc";
65 #io-channel-cells = <1>;
66 ti,adc-channels = <4 5 6 7>;
67 ti,chan-step-opendelay = <0x098 0x3ffff 0x098 0x0>;
68 ti,chan-step-sampledelay = <0xff 0x0 0xf 0x0>;
69 ti,chan-step-avg = <16 2 4 8>;
70 };
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