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     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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