0001 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/iio/afe/current-sense-amplifier.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Current Sense Amplifier
0008
0009 maintainers:
0010 - Peter Rosin <peda@axentia.se>
0011
0012 description: |
0013 When an io-channel measures the output voltage from a current sense
0014 amplifier, the interesting measurement is almost always the current
0015 through the sense resistor, not the voltage output. This binding
0016 describes such a current sense circuit.
0017
0018 properties:
0019 compatible:
0020 const: current-sense-amplifier
0021
0022 io-channels:
0023 maxItems: 1
0024 description: |
0025 Channel node of a voltage io-channel.
0026
0027 sense-resistor-micro-ohms:
0028 description: The sense resistance.
0029
0030 sense-gain-mult:
0031 $ref: /schemas/types.yaml#/definitions/uint32
0032 description: Amplifier gain multiplier. The default is <1>.
0033
0034 sense-gain-div:
0035 $ref: /schemas/types.yaml#/definitions/uint32
0036 description: Amplifier gain divider. The default is <1>.
0037
0038 required:
0039 - compatible
0040 - io-channels
0041 - sense-resistor-micro-ohms
0042
0043 additionalProperties: false
0044
0045 examples:
0046 - |
0047 sysi {
0048 compatible = "current-sense-amplifier";
0049 io-channels = <&tiadc 0>;
0050
0051 sense-resistor-micro-ohms = <20000>;
0052 sense-gain-mult = <50>;
0053 };
0054 ...
