1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/afe/current-sense-amplifier.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Current Sense Amplifier
8
9 maintainers:
10 - Peter Rosin <peda@axentia.se>
11
12 description: |
13 When an io-channel measures the output voltage from a current sense
14 amplifier, the interesting measurement is almost always the current
15 through the sense resistor, not the voltage output. This binding
16 describes such a current sense circuit.
17
18 properties:
19 compatible:
20 const: current-sense-amplifier
21
22 io-channels:
23 maxItems: 1
24 description: |
25 Channel node of a voltage io-channel.
26
27 sense-resistor-micro-ohms:
28 description: The sense resistance.
29
30 sense-gain-mult:
31 $ref: /schemas/types.yaml#/definitions/uint32
32 description: Amplifier gain multiplier. The default is <1>.
33
34 sense-gain-div:
35 $ref: /schemas/types.yaml#/definitions/uint32
36 description: Amplifier gain divider. The default is <1>.
37
38 required:
39 - compatible
40 - io-channels
41 - sense-resistor-micro-ohms
42
43 additionalProperties: false
44
45 examples:
46 - |
47 sysi {
48 compatible = "current-sense-amplifier";
49 io-channels = <&tiadc 0>;
50
51 sense-resistor-micro-ohms = <20000>;
52 sense-gain-mult = <50>;
53 };
54 ...
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