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2f7bc8f01a
Devicetree bindings for MAX22007 4-channel 12-bit DAC that drives a voltage or current output on each channel Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Signed-off-by: Janani Sunil <janani.sunil@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
121 lines
2.8 KiB
YAML
121 lines
2.8 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/dac/adi,max22007.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices MAX22007 DAC
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maintainers:
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- Janani Sunil <janani.sunil@analog.com>
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description:
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The MAX22007 is a quad-channel, 12-bit digital-to-analog converter (DAC)
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with integrated precision output amplifiers and current output capability.
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Each channel can be independently configured for voltage or current output.
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Datasheet available at https://www.analog.com/en/products/max22007.html
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$ref: /schemas/spi/spi-peripheral-props.yaml#
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properties:
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compatible:
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const: adi,max22007
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reg:
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maxItems: 1
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spi-max-frequency:
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maximum: 500000
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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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vdd-supply:
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description: Low-Voltage Power Supply from +2.7V to +5.5V.
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hvdd-supply:
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description:
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Positive High-Voltage Power Supply from +8V to (HVSS +24V) for
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the Output Channels.
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hvss-supply:
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description:
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Optional Negative High-Voltage Power Supply from -2V to 0V for the Output
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Channels. For most applications HVSS can be connected to GND (0V), but for
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applications requiring output down to true 0V or 0mA, connect to a -2V supply.
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reset-gpios:
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maxItems: 1
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description:
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Active low GPIO.
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patternProperties:
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"^channel@[0-3]$":
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$ref: /schemas/iio/dac/dac.yaml#
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type: object
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description:
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Represents the external channels which are connected to the DAC.
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properties:
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reg:
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description: Channel number
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items:
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minimum: 0
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maximum: 3
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adi,ch-func:
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description:
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Channel output type. Use CH_FUNC_VOLTAGE_OUTPUT for voltage
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output or CH_FUNC_CURRENT_OUTPUT for current output.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [1, 2]
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required:
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- reg
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- adi,ch-func
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unevaluatedProperties: false
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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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- hvdd-supply
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/iio/addac/adi,ad74413r.h>
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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,max22007";
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reg = <0>;
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spi-max-frequency = <500000>;
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reset-gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
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vdd-supply = <&vdd_reg>;
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hvdd-supply = <&hvdd_reg>;
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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,ch-func = <CH_FUNC_VOLTAGE_OUTPUT>;
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};
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channel@1 {
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reg = <1>;
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adi,ch-func = <CH_FUNC_CURRENT_OUTPUT>;
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};
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};
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};
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...
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