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dt-bindings:iio:afe:current-sense-shunt: txt to yaml conversion.

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Very simple binding. As such straight forward conversion.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Peter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/20201031181242.742301-7-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2020-10-31 18:12:38 +00:00
parent fbac26b9ad
commit ce66e52b6c
2 changed files with 64 additions and 41 deletions
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41
Documentation/devicetree/bindings/iio/afe/current-sense-shunt.txt
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Current Sense Shunt
===================
When an io-channel measures the voltage over a current sense shunt,
the interesting measurement is almost always the current through the
shunt, not the voltage over it. This binding describes such a current
sense circuit.
Required properties:
- compatible : "current-sense-shunt"
- io-channels : Channel node of a voltage io-channel.
- shunt-resistor-micro-ohms : The shunt resistance in microohms.
Example:
The system current is measured by measuring the voltage over a
3.3 ohms shunt resistor.
sysi {
compatible = "current-sense-shunt";
io-channels = <&tiadc 0>;
/* Divide the voltage by 3300000/1000000 (or 3.3) for the current. */
shunt-resistor-micro-ohms = <3300000>;
};
&i2c {
tiadc: adc@48 {
compatible = "ti,ads1015";
reg = <0x48>;
#io-channel-cells = <1>;
#address-cells = <1>;
#size-cells = <0>;
channel@0 { /* IN0,IN1 differential */
reg = <0>;
ti,gain = <1>;
ti,datarate = <4>;
};
};
};

64
Documentation/devicetree/bindings/iio/afe/current-sense-shunt.yaml Normal file
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/afe/current-sense-shunt.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Current Sense Shunt
maintainers:
- Peter Rosin <peda@axentia.se>
description: |
When an io-channel measures the voltage over a current sense shunt,
the interesting measurement is almost always the current through the
shunt, not the voltage over it. This binding describes such a current
sense circuit.
properties:
compatible:
const: current-sense-shunt
io-channels:
maxItems: 1
description: |
Channel node of a voltage io-channel.
shunt-resistor-micro-ohms:
description: The shunt resistance.
required:
- compatible
- io-channels
- shunt-resistor-micro-ohms
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
tiadc: adc@48 {
compatible = "ti,ads1015";
reg = <0x48>;
#io-channel-cells = <1>;
#address-cells = <1>;
#size-cells = <0>;
channel@0 { /* IN0,IN1 differential */
reg = <0>;
ti,gain = <1>;
ti,datarate = <4>;
};
};
};
sysi {
compatible = "current-sense-shunt";
io-channels = <&tiadc 0>;
/* Divide the voltage by 3300000/1000000 (or 3.3) for the current. */
shunt-resistor-micro-ohms = <3300000>;
};
...