iio/afe/current-sense-shunt.yaml

1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/afe/current-sense-shunt.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Current Sense Shunt
10   - Peter Rosin <peda@axentia.se>
13   When an io-channel measures the voltage over a current sense shunt,
14   the interesting measurement is almost always the current through the
15   shunt, not the voltage over it. This binding describes such a current
16   sense circuit.
20     const: current-sense-shunt
22   io-channels:
25       Channel node of a voltage io-channel.
27   "#io-channel-cells":
30   shunt-resistor-micro-ohms:
34   - compatible
35   - io-channels
36   - shunt-resistor-micro-ohms
41   - |
43         #address-cells = <1>;
44         #size-cells = <0>;
48             #io-channel-cells = <1>;
50             #address-cells = <1>;
51             #size-cells = <0>;
61         compatible = "current-sense-shunt";
62         io-channels = <&tiadc 0>;
63         #io-channel-cells = <0>;
65         /* Divide the voltage by 3300000/1000000 (or 3.3) for the current. */
66         shunt-resistor-micro-ohms = <3300000>;