140 lines
3.3 KiB
YAML
140 lines
3.3 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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$id: http://devicetree.org/schemas/iio/dac/adi,ad5758.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices AD5758 DAC
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maintainers:
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- Michael Hennerich <Michael.Hennerich@analog.com>
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properties:
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compatible:
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const: adi,ad5758
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reg:
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maxItems: 1
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spi-cpha: true
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adi,dc-dc-mode:
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [1, 2, 3]
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description: |
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Mode of operation of the dc-to-dc converter
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Dynamic Power Control (DPC)
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In this mode, the AD5758 circuitry senses the output voltage and
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dynamically regulates the supply voltage, VDPC+, to meet compliance
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requirements plus an optimized headroom voltage for the output buffer.
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Programmable Power Control (PPC)
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In this mode, the VDPC+ voltage is user-programmable to a fixed level
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that needs to accommodate the maximum output load required.
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The output of the DAC core is either converted to a current or
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voltage output at the VIOUT pin. Only one mode can be enabled at
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any one time.
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The following values are currently supported:
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* 1: DPC current mode
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* 2: DPC voltage mode
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* 3: PPC current mode
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Depending on the selected output mode (voltage or current) one of the
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two properties must be present:
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adi,range-microvolt:
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description: |
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Voltage output range specified as <minimum, maximum>
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oneOf:
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- items:
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- const: 0
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- enum: [5000000, 10000000]
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- items:
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- const: -5000000
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- const: 5000000
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- items:
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- const: -10000000
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- const: 10000000
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adi,range-microamp:
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description: |
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Current output range specified as <minimum, maximum>
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oneOf:
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- items:
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- const: 0
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- enum: [20000, 24000]
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- items:
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- const: 4
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- const: 24000
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- items:
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- const: -20000
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- const: 20000
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- items:
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- const: -24000
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- const: 24000
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- items:
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- const: -1000
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- const: 22000
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reset-gpios: true
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adi,dc-dc-ilim-microamp:
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enum: [150000, 200000, 250000, 300000, 350000, 400000]
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description: |
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The dc-to-dc converter current limit.
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adi,slew-time-us:
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description: |
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The time it takes for the output to reach the full scale [uS]
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minimum: 133
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maximum: 1023984375
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required:
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- compatible
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- reg
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- spi-cpha
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- adi,dc-dc-mode
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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- if:
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properties:
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adi,dc-dc-mode:
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enum: [1, 3]
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then:
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properties:
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adi,range-microvolt: false
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required:
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- adi,range-microamp
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else:
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properties:
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adi,range-microamp: false
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required:
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- adi,range-microvolt
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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,ad5758";
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reg = <0>;
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spi-max-frequency = <1000000>;
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spi-cpha;
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reset-gpios = <&gpio 22 0>;
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adi,dc-dc-mode = <2>;
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adi,range-microvolt = <0 10000000>;
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adi,dc-dc-ilim-microamp = <200000>;
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adi,slew-time-us = <125000>;
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};
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};
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...
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