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linux
dt-bindings:iio:dac:dpot-dac: yaml conversion.
Txt to yaml format conversion. I dropped the example section
describing the measurement ADC, as that isn't strictly part
of this binding.
Uses the new dt-schema/schema/iio/iio-consumer.yaml schema.
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/20201031181242.742301-3-jic23@kernel.org
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-41
-41
Documentation/devicetree/bindings/iio/dac/dpot-dac.txt
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Documentation/devicetree/bindings/iio/dac/dpot-dac.txt
···
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Bindings for DAC emulation using a digital potentiometer
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It is assumed that the dpot is used as a voltage divider between the
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current dpot wiper setting and the maximum resistance of the dpot. The
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divided voltage is provided by a vref regulator.
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.------.
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.-----------. | |
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| vref |--' .---.
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| regulator |--. | |
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'-----------' | | d |
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| | p |
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| | o | wiper
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| | t |<---------+
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| | |
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| '---' dac output voltage
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| |
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'------+------------+
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Required properties:
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- compatible: Should be "dpot-dac"
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- vref-supply: The regulator supplying the voltage divider.
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- io-channels: Channel node of the dpot to be used for the voltage division.
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- io-channel-names: Should be "dpot".
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Example:
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&i2c {
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dpot: mcp4651-503@28 {
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compatible = "microchip,mcp4651-503";
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reg = <0x28>;
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#io-channel-cells = <1>;
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};
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};
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dac {
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compatible = "dpot-dac";
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vref-supply = <®_3v3>;
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io-channels = <&dpot 0>;
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io-channel-names = "dpot";
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};
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Documentation/devicetree/bindings/iio/dac/dpot-dac.yaml
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Documentation/devicetree/bindings/iio/dac/dpot-dac.yaml
···
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/dac/dpot-dac.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: DAC emulation using a digital potentiometer
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maintainers:
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- Peter Rosin <peda@axentia.se>
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description: |
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It is assumed that the dpot is used as a voltage divider between the
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current dpot wiper setting and the maximum resistance of the dpot. The
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divided voltage is provided by a vref regulator.
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.------.
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.-----------. | |
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| vref |--' .---.
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| regulator |--. | |
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'-----------' | | d |
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| | p |
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| | o | wiper
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| | t |<---------+
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| | |
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| '---' dac output voltage
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| |
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'------+------------+
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properties:
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compatible:
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const: dpot-dac
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vref-supply:
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description: Regulator supplying the voltage divider.
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io-channels:
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maxItems: 1
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description: |
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Channel node of the dpot to be used for the voltage division.
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io-channel-names:
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const: dpot
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"#io-channel-cells":
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const: 1
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required:
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- compatible
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- vref-supply
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- io-channels
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- io-channel-names
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additionalProperties: false
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examples:
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- |
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dac {
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compatible = "dpot-dac";
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vref-supply = <®_3v3>;
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io-channels = <&dpot 0>;
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io-channel-names = "dpot";
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};
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...