| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/iio/addac/adi,ad74413r.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Analog Devices AD74412R/AD74413R device |
| |
| maintainers: |
| - Cosmin Tanislav <cosmin.tanislav@analog.com> |
| |
| description: | |
| The AD74412R and AD74413R are quad-channel software configurable input/output |
| solutions for building and process control applications. They contain |
| functionality for analog output, analog input, digital input, resistance |
| temperature detector, and thermocouple measurements integrated |
| into a single chip solution with an SPI interface. |
| The devices feature a 16-bit ADC and four configurable 13-bit DACs to provide |
| four configurable input/output channels and a suite of diagnostic functions. |
| The AD74413R differentiates itself from the AD74412R by being HART-compatible. |
| https://www.analog.com/en/products/ad74412r.html |
| https://www.analog.com/en/products/ad74413r.html |
| |
| properties: |
| compatible: |
| enum: |
| - adi,ad74412r |
| - adi,ad74413r |
| |
| reg: |
| maxItems: 1 |
| |
| '#address-cells': |
| const: 1 |
| |
| '#size-cells': |
| const: 0 |
| |
| spi-max-frequency: |
| maximum: 1000000 |
| |
| spi-cpol: true |
| |
| interrupts: |
| maxItems: 1 |
| |
| refin-supply: true |
| |
| shunt-resistor-micro-ohms: |
| description: |
| Shunt (sense) resistor value in micro-Ohms. |
| default: 100000000 |
| |
| required: |
| - compatible |
| - reg |
| - spi-max-frequency |
| - spi-cpol |
| - refin-supply |
| |
| additionalProperties: false |
| |
| patternProperties: |
| "^channel@[0-3]$": |
| type: object |
| description: Represents the external channels which are connected to the device. |
| |
| properties: |
| reg: |
| description: | |
| The channel number. It can have up to 4 channels numbered from 0 to 3. |
| minimum: 0 |
| maximum: 3 |
| |
| adi,ch-func: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: | |
| Channel function. |
| HART functions are not supported on AD74412R. |
| 0 - CH_FUNC_HIGH_IMPEDANCE |
| 1 - CH_FUNC_VOLTAGE_OUTPUT |
| 2 - CH_FUNC_CURRENT_OUTPUT |
| 3 - CH_FUNC_VOLTAGE_INPUT |
| 4 - CH_FUNC_CURRENT_INPUT_EXT_POWER |
| 5 - CH_FUNC_CURRENT_INPUT_LOOP_POWER |
| 6 - CH_FUNC_RESISTANCE_INPUT |
| 7 - CH_FUNC_DIGITAL_INPUT_LOGIC |
| 8 - CH_FUNC_DIGITAL_INPUT_LOOP_POWER |
| 9 - CH_FUNC_CURRENT_INPUT_EXT_POWER_HART |
| 10 - CH_FUNC_CURRENT_INPUT_LOOP_POWER_HART |
| minimum: 0 |
| maximum: 10 |
| default: 0 |
| |
| adi,gpo-comparator: |
| type: boolean |
| description: | |
| Whether to configure GPO as a comparator or not. |
| When not configured as a comparator, the GPO will be treated as an |
| output-only GPIO. |
| |
| required: |
| - reg |
| |
| examples: |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| #include <dt-bindings/interrupt-controller/irq.h> |
| #include <dt-bindings/iio/addac/adi,ad74413r.h> |
| |
| spi { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| cs-gpios = <&gpio 17 GPIO_ACTIVE_LOW>; |
| status = "okay"; |
| |
| ad74413r@0 { |
| compatible = "adi,ad74413r"; |
| reg = <0>; |
| spi-max-frequency = <1000000>; |
| spi-cpol; |
| |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| interrupt-parent = <&gpio>; |
| interrupts = <26 IRQ_TYPE_EDGE_FALLING>; |
| |
| refin-supply = <&ad74413r_refin>; |
| |
| channel@0 { |
| reg = <0>; |
| |
| adi,ch-func = <CH_FUNC_VOLTAGE_OUTPUT>; |
| }; |
| |
| channel@1 { |
| reg = <1>; |
| |
| adi,ch-func = <CH_FUNC_CURRENT_OUTPUT>; |
| }; |
| |
| channel@2 { |
| reg = <2>; |
| |
| adi,ch-func = <CH_FUNC_DIGITAL_INPUT_LOGIC>; |
| adi,gpo-comparator; |
| }; |
| |
| channel@3 { |
| reg = <3>; |
| |
| adi,ch-func = <CH_FUNC_CURRENT_INPUT_EXT_POWER>; |
| }; |
| }; |
| }; |
| ... |
