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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml
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# SPDX-License-Identifier: (GPL-2.0-only 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/adi,ad3530r.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Analog Devices AD3530R and Similar DACs

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maintainers:

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  - Kim Seer Paller <kimseer.paller@analog.com>

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description: |

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  The AD3530/AD3530R (8-channel) and AD3531/AD3531R (4-channel) are low-power,

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  16-bit, buffered voltage output digital-to-analog converters (DACs) with

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  software-programmable gain controls, providing full-scale output spans of 2.5V

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  or 5V for reference voltages of 2.5V. These devices operate from a single 2.7V

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  to 5.5V supply and are guaranteed monotonic by design. The "R" variants

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  include a 2.5V, 5ppm/°C internal reference, which is disabled by default.

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  Datasheet can be found here:

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  https://www.analog.com/media/en/technical-documentation/data-sheets/ad3530_ad530r.pdf

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  https://www.analog.com/media/en/technical-documentation/data-sheets/ad3531-ad3531r.pdf

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properties:

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  compatible:

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    enum:

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      - adi,ad3530

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      - adi,ad3530r

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      - adi,ad3531

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      - adi,ad3531r

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  reg:

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    maxItems: 1

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  spi-max-frequency:

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    maximum: 50000000

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  vdd-supply:

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    description: Power Supply Input.

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  iovdd-supply:

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    description: Digital Power Supply Input.

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  io-channels:

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    description:

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      ADC channel used to monitor internal die temperature, output voltages, and

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      current of a selected channel via the MUXOUT pin.

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    maxItems: 1

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  ref-supply:

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    description:

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      Reference Input/Output. The voltage at the REF pin sets the full-scale

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      range of all channels. If not provided the internal reference is used and

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      also provided on the VREF pin.

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  reset-gpios:

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    description:

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      Active low signal that is falling edge sensitive. When it is deasserted,

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      the digital core initialization is performed and all DAC registers except

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      the Interface Configuration A register are reset to their default values.

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    maxItems: 1

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  ldac-gpios:

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    description:

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      LDAC pin to be used as a hardware trigger to update the DAC channels. If

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      not present, the DAC channels are updated by Software LDAC.

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    maxItems: 1

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  adi,range-double:

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    description:

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      Configure the output range for all channels. If the property is present,

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      the output will range from 0V to 2Vref. If the property is not present,

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      the output will range from 0V to Vref.

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    type: boolean

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required:

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  - compatible

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  - reg

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  - vdd-supply

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  - iovdd-supply

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allOf:

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  - $ref: /schemas/spi/spi-peripheral-props.yaml#

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unevaluatedProperties: 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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        dac@0 {

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            compatible = "adi,ad3530r";

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            reg = <0>;

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            spi-max-frequency = <1000000>;

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            vdd-supply = <&vdd>;

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            iovdd-supply = <&iovdd>;

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        };

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    };

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...

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