| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| # Copyright 2020 Analog Devices Inc. |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/iio/dac/adi,ad5770r.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Analog Devices AD5770R DAC device driver |
| |
| maintainers: |
| - Alexandru Tachici <alexandru.tachici@analog.com> |
| |
| description: | |
| Bindings for the Analog Devices AD5770R current DAC device. Datasheet can be |
| found here: |
| https://www.analog.com/media/en/technical-documentation/data-sheets/AD5770R.pdf |
| |
| properties: |
| compatible: |
| enum: |
| - adi,ad5770r |
| |
| reg: |
| maxItems: 1 |
| |
| avdd-supply: |
| description: |
| AVdd voltage supply. Represents two different supplies in the datasheet |
| that are in fact the same. |
| |
| iovdd-supply: |
| description: |
| Voltage supply for the chip interface. |
| |
| vref-supply: |
| description: Specify the voltage of the external reference used. |
| Available reference options are 1.25 V or 2.5 V. If no |
| external reference declared then the device will use the |
| internal reference of 1.25 V. |
| |
| adi,external-resistor: |
| description: Specify if an external 2.5k ohm resistor is used. If not |
| specified the device will use an internal 2.5k ohm resistor. |
| The precision resistor is used for reference current generation. |
| type: boolean |
| |
| reset-gpios: |
| description: GPIO spec for the RESET pin. If specified, it will be |
| asserted during driver probe. |
| maxItems: 1 |
| |
| spi-max-frequency: true |
| |
| '#address-cells': |
| const: 1 |
| |
| '#size-cells': |
| const: 0 |
| |
| channel@0: |
| description: Represents an external channel which are |
| connected to the DAC. Channel 0 can act both as a current |
| source and sink. |
| type: object |
| |
| properties: |
| reg: |
| description: This represents the channel number. |
| const: 0 |
| |
| adi,range-microamp: |
| description: Output range of the channel. |
| oneOf: |
| - items: |
| - const: 0 |
| - const: 300000 |
| - items: |
| - const: -60000 |
| - const: 0 |
| - items: |
| - const: -60000 |
| - const: 300000 |
| |
| channel@1: |
| description: Represents an external channel which are |
| connected to the DAC. |
| type: object |
| |
| properties: |
| reg: |
| description: This represents the channel number. |
| const: 1 |
| |
| adi,range-microamp: |
| description: Output range of the channel. |
| items: |
| - const: 0 |
| - enum: [140000, 250000] |
| |
| channel@2: |
| description: Represents an external channel which are |
| connected to the DAC. |
| type: object |
| |
| properties: |
| reg: |
| description: This represents the channel number. |
| const: 2 |
| |
| adi,range-microamp: |
| description: Output range of the channel. |
| items: |
| - const: 0 |
| - enum: [55000, 150000] |
| |
| patternProperties: |
| "^channel@([3-5])$": |
| type: object |
| description: Represents the external channels which are connected to the DAC. |
| properties: |
| reg: |
| description: This represents the channel number. |
| minimum: 3 |
| maximum: 5 |
| |
| adi,range-microamp: |
| description: Output range of the channel. |
| items: |
| - const: 0 |
| - enum: [45000, 100000] |
| |
| required: |
| - reg |
| - channel@0 |
| - channel@1 |
| - channel@2 |
| - channel@3 |
| - channel@4 |
| - channel@5 |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| spi { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| ad5770r@0 { |
| compatible = "adi,ad5770r"; |
| reg = <0>; |
| spi-max-frequency = <1000000>; |
| vref-supply = <&vref>; |
| adi,external-resistor; |
| reset-gpios = <&gpio 22 0>; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| channel@0 { |
| reg = <0>; |
| adi,range-microamp = <0 300000>; |
| }; |
| |
| channel@1 { |
| reg = <1>; |
| adi,range-microamp = <0 140000>; |
| }; |
| |
| channel@2 { |
| reg = <2>; |
| adi,range-microamp = <0 55000>; |
| }; |
| |
| channel@3 { |
| reg = <3>; |
| adi,range-microamp = <0 45000>; |
| }; |
| |
| channel@4 { |
| reg = <4>; |
| adi,range-microamp = <0 45000>; |
| }; |
| |
| channel@5 { |
| reg = <5>; |
| adi,range-microamp = <0 45000>; |
| }; |
| }; |
| }; |
| ... |
