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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
This commit is contained in:
Jonathan Cameron 2020-10-31 18:12:34 +00:00
parent dba91f82d5
commit 06d2ff6fe1
2 changed files with 64 additions and 41 deletions
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41
Documentation/devicetree/bindings/iio/dac/dpot-dac.txt
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Bindings for DAC emulation using a digital potentiometer
It is assumed that the dpot is used as a voltage divider between the
current dpot wiper setting and the maximum resistance of the dpot. The
divided voltage is provided by a vref regulator.
.------.
.-----------. | |
| vref |--' .---.
| regulator |--. | |
'-----------' | | d |
| | p |
| | o | wiper
| | t |<---------+
| | |
| '---' dac output voltage
| |
'------+------------+
Required properties:
- compatible: Should be "dpot-dac"
- vref-supply: The regulator supplying the voltage divider.
- io-channels: Channel node of the dpot to be used for the voltage division.
- io-channel-names: Should be "dpot".
Example:
&i2c {
dpot: mcp4651-503@28 {
compatible = "microchip,mcp4651-503";
reg = <0x28>;
#io-channel-cells = <1>;
};
};
dac {
compatible = "dpot-dac";
vref-supply = <&reg_3v3>;
io-channels = <&dpot 0>;
io-channel-names = "dpot";
};

64
Documentation/devicetree/bindings/iio/dac/dpot-dac.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/dac/dpot-dac.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: DAC emulation using a digital potentiometer
maintainers:
- Peter Rosin <peda@axentia.se>
description: |
It is assumed that the dpot is used as a voltage divider between the
current dpot wiper setting and the maximum resistance of the dpot. The
divided voltage is provided by a vref regulator.
.------.
.-----------. | |
| vref |--' .---.
| regulator |--. | |
'-----------' | | d |
| | p |
| | o | wiper
| | t |<---------+
| | |
| '---' dac output voltage
| |
'------+------------+
properties:
compatible:
const: dpot-dac
vref-supply:
description: Regulator supplying the voltage divider.
io-channels:
maxItems: 1
description: |
Channel node of the dpot to be used for the voltage division.
io-channel-names:
const: dpot
"#io-channel-cells":
const: 1
required:
- compatible
- vref-supply
- io-channels
- io-channel-names
additionalProperties: false
examples:
- |
dac {
compatible = "dpot-dac";
vref-supply = <&reg_3v3>;
io-channels = <&dpot 0>;
io-channel-names = "dpot";
};
...