Add devicetree bindings documentation for the AD5754 DAC driver. Signed-off-by: Ciprian Regus <ciprian.regus@xxxxxxxxxx> --- changes in v2: - dropped "device driver" from the title. - added the vendor prefix to the 'output-range-microvolt' property. - fixed example indentation (4 spaces). .../bindings/iio/dac/adi,ad5754.yaml | 182 ++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/dac/adi,ad5754.yaml diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5754.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5754.yaml new file mode 100644 index 000000000000..4c9c5ba90931 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5754.yaml @@ -0,0 +1,182 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/adi,ad5754.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD5754 DAC + +maintainers: + - Ciprian Regus <ciprian.regus@xxxxxxxxxx> + +description: | + Bindings for the AD5754 and other chip variants digital-to-analog + converters. + + https://www.analog.com/media/en/technical-documentation/data-sheets/AD5724_5734_5754.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad5722_5732_5752.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad5724r_5734r_5754r.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD5722R_5732R_5752R.pdf + +properties: + compatible: + enum: + - adi,ad5722 + - adi,ad5732 + - adi,ad5752 + - adi,ad5724 + - adi,ad5734 + - adi,ad5754 + - adi,ad5722r + - adi,ad5732r + - adi,ad5752r + - adi,ad5724r + - adi,ad5734r + - adi,ad5754r + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 30000000 + + spi-cpol: true + + vref-supply: + description: + The regulator to use as an external reference. If this is not provided, + the internal reference will be used for chips that have this feature. + The external reference must be 2.5V. + + clr-gpios: + description: DAC output clear GPIO (CLR pin). If specified, it will be set + to high during probe, thus allowing the DAC output to be updated. + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +patternProperties: + "^channel@([0-3])$": + type: object + description: Configurations for the DAC channels + + properties: + reg: + description: Channel number + maxItems: 1 + + adi,output-range-microvolt: + description: | + Voltage range of a channel as <minimum, maximum>. + oneOf: + - items: + - const: 0 + - enum: [5000000, 10000000, 10800000] + - items: + - const: -5000000 + - const: 5000000 + - items: + - const: -10000000 + - const: 10000000 + - items: + - const: -10800000 + - const: 10800000 + + required: + - reg + - adi,output-range-microvolt + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + + - if: + properties: + compatible: + contains: + enum: + - adi,ad5722 + - adi,ad5732 + - adi,ad5752 + - adi,ad5722r + - adi,ad5732r + - adi,ad5752r + then: + patternProperties: + "^channel@([0-3])$": + type: object + properties: + reg: + description: Channel number + enum: [0, 1] + + - if: + properties: + compatible: + contains: + enum: + - adi,ad5724 + - adi,ad5734 + - adi,ad5754 + - adi,ad5724r + - adi,ad5734r + - adi,ad5754r + then: + patternProperties: + "^channel@([0-3])$": + type: object + properties: + reg: + description: Channel number + enum: [0, 1, 2, 3] + +required: + - compatible + - reg + - spi-max-frequency + - spi-cpol + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + spi { + status = "okay"; + + #address-cells = <1>; + #size-cells = <0>; + + dac@0 { + compatible = "adi,ad5754r"; + reg = <0>; + spi-max-frequency = <1000000>; + spi-cpol; + + clr-gpios = <&gpio 25 GPIO_ACTIVE_LOW>; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + adi,output-range-microvolt = <0 5000000>; + }; + channel@1 { + reg = <1>; + adi,output-range-microvolt = <0 5000000>; + }; + channel@2 { + reg = <2>; + adi,output-range-microvolt = <0 5000000>; + }; + channel@3 { + reg = <3>; + adi,output-range-microvolt = <0 5000000>; + }; + }; + }; -- 2.30.2
