adi,ad5758.yaml

  1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/iio/dac/adi,ad5758.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Analog Devices AD5758 DAC
  8
  9maintainers:
 10  - Michael Hennerich <Michael.Hennerich@analog.com>
 11
 12properties:
 13  compatible:
 14    const: adi,ad5758
 15
 16  reg:
 17    maxItems: 1
 18
 19  spi-cpha: true
 20
 21  adi,dc-dc-mode:
 22    $ref: /schemas/types.yaml#/definitions/uint32
 23    enum: [1, 2, 3]
 24    description: |
 25      Mode of operation of the dc-to-dc converter
 26      Dynamic Power Control (DPC)
 27      In this mode, the AD5758 circuitry senses the output voltage and
 28      dynamically regulates the supply voltage, VDPC+, to meet compliance
 29      requirements plus an optimized headroom voltage for the output buffer.
 30
 31      Programmable Power Control (PPC)
 32      In this mode, the VDPC+ voltage is user-programmable to a fixed level
 33      that needs to accommodate the maximum output load required.
 34
 35      The output of the DAC core is either converted to a current or
 36      voltage output at the VIOUT pin. Only one mode can be enabled at
 37      any one time.
 38
 39      The following values are currently supported:
 40      * 1: DPC current mode
 41      * 2: DPC voltage mode
 42      * 3: PPC current mode
 43
 44      Depending on the selected output mode (voltage or current) one of the
 45      two properties must be present:
 46
 47  adi,range-microvolt:
 48    description: |
 49      Voltage output range specified as <minimum, maximum>
 50    oneOf:
 51      - items:
 52          - const: 0
 53          - enum: [5000000, 10000000]
 54      - items:
 55          - const: -5000000
 56          - const: 5000000
 57      - items:
 58          - const: -10000000
 59          - const: 10000000
 60
 61  adi,range-microamp:
 62    description: |
 63      Current output range specified as <minimum, maximum>
 64    oneOf:
 65      - items:
 66          - const: 0
 67          - enum: [20000, 24000]
 68      - items:
 69          - const: 4
 70          - const: 24000
 71      - items:
 72          - const: -20000
 73          - const: 20000
 74      - items:
 75          - const: -24000
 76          - const: 24000
 77      - items:
 78          - const: -1000
 79          - const: 22000
 80
 81  reset-gpios:
 82    maxItems: 1
 83
 84  adi,dc-dc-ilim-microamp:
 85    enum: [150000, 200000, 250000, 300000, 350000, 400000]
 86    description: |
 87      The dc-to-dc converter current limit.
 88
 89  adi,slew-time-us:
 90    description: |
 91      The time it takes for the output to reach the full scale [uS]
 92    minimum: 133
 93    maximum: 1023984375
 94
 95required:
 96  - compatible
 97  - reg
 98  - spi-cpha
 99  - adi,dc-dc-mode
100
101allOf:
102  - $ref: /schemas/spi/spi-peripheral-props.yaml#
103  - if:
104      properties:
105        adi,dc-dc-mode:
106          enum: [1, 3]
107    then:
108      properties:
109        adi,range-microvolt: false
110      required:
111        - adi,range-microamp
112    else:
113      properties:
114        adi,range-microamp: false
115      required:
116        - adi,range-microvolt
117
118unevaluatedProperties: false
119
120examples:
121  - |
122    spi {
123        #address-cells = <1>;
124        #size-cells = <0>;
125
126        dac@0 {
127            compatible = "adi,ad5758";
128            reg = <0>;
129            spi-max-frequency = <1000000>;
130            spi-cpha;
131
132            reset-gpios = <&gpio 22 0>;
133
134            adi,dc-dc-mode = <2>;
135            adi,range-microvolt = <0 10000000>;
136            adi,dc-dc-ilim-microamp = <200000>;
137            adi,slew-time-us = <125000>;
138        };
139    };
140...