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4828556dca
In cases where we don't reference another schema, 'additionalProperties' can be used instead. This is preferred for now as 'unevaluatedProperties' support isn't implemented yet. In a few cases, this means adding some missing property definitions of which most are for SPI bus properties. 'unevaluatedProperties' is not going to work for the SPI bus properties anyways as they are evaluated from the parent node, not the SPI child node. Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20201005183830.486085-3-robh@kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
191 lines
4.9 KiB
YAML
191 lines
4.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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# Copyright 2020 Analog Devices Inc.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/dac/adi,ad5770r.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices AD5770R DAC device driver
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maintainers:
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- Mircea Caprioru <mircea.caprioru@analog.com>
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description: |
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Bindings for the Analog Devices AD5770R current DAC device. Datasheet can be
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found here:
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https://www.analog.com/media/en/technical-documentation/data-sheets/AD5770R.pdf
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properties:
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compatible:
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enum:
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- adi,ad5770r
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reg:
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maxItems: 1
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avdd-supply:
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description:
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AVdd voltage supply. Represents two different supplies in the datasheet
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that are in fact the same.
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iovdd-supply:
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description:
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Voltage supply for the chip interface.
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vref-supply:
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description: Specify the voltage of the external reference used.
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Available reference options are 1.25 V or 2.5 V. If no
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external reference declared then the device will use the
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internal reference of 1.25 V.
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adi,external-resistor:
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description: Specify if an external 2.5k ohm resistor is used. If not
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specified the device will use an internal 2.5k ohm resistor.
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The precision resistor is used for reference current generation.
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type: boolean
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reset-gpios:
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description: GPIO spec for the RESET pin. If specified, it will be
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asserted during driver probe.
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maxItems: 1
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spi-max-frequency: true
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'#address-cells':
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const: 1
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'#size-cells':
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const: 0
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channel@0:
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description: Represents an external channel which are
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connected to the DAC. Channel 0 can act both as a current
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source and sink.
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type: object
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properties:
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reg:
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description: This represents the channel number.
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const: 0
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adi,range-microamp:
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description: Output range of the channel.
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oneOf:
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- items:
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- const: 0
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- const: 300000
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- items:
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- const: -60000
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- const: 0
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- items:
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- const: -60000
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- const: 300000
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channel@1:
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description: Represents an external channel which are
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connected to the DAC.
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type: object
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properties:
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reg:
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description: This represents the channel number.
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const: 1
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adi,range-microamp:
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description: Output range of the channel.
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items:
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- const: 0
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- enum: [140000, 250000]
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channel@2:
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description: Represents an external channel which are
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connected to the DAC.
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type: object
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properties:
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reg:
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description: This represents the channel number.
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const: 2
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adi,range-microamp:
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description: Output range of the channel.
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items:
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- const: 0
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- enum: [55000, 150000]
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patternProperties:
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"^channel@([3-5])$":
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type: object
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description: Represents the external channels which are connected to the DAC.
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properties:
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reg:
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description: This represents the channel number.
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minimum: 3
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maximum: 5
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adi,range-microamp:
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description: Output range of the channel.
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items:
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- const: 0
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- enum: [45000, 100000]
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required:
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- reg
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- channel@0
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- channel@1
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- channel@2
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- channel@3
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- channel@4
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- channel@5
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additionalProperties: false
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examples:
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- |
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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ad5770r@0 {
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compatible = "adi,ad5770r";
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reg = <0>;
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spi-max-frequency = <1000000>;
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vref-supply = <&vref>;
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adi,external-resistor;
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reset-gpios = <&gpio 22 0>;
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#address-cells = <1>;
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#size-cells = <0>;
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channel@0 {
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reg = <0>;
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adi,range-microamp = <0 300000>;
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};
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channel@1 {
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reg = <1>;
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adi,range-microamp = <0 140000>;
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};
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channel@2 {
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reg = <2>;
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adi,range-microamp = <0 55000>;
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};
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channel@3 {
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reg = <3>;
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adi,range-microamp = <0 45000>;
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};
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channel@4 {
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reg = <4>;
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adi,range-microamp = <0 45000>;
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};
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channel@5 {
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reg = <5>;
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adi,range-microamp = <0 45000>;
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};
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};
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};
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...
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