| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | # Copyright 2022 Analog Devices Inc. |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/iio/adc/adi,max11410.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: Analog Devices MAX11410 ADC device driver |
| 9 | |
| 10 | maintainers: |
| 11 | - Ibrahim Tilki <Ibrahim.Tilki@analog.com> |
| 12 | |
| 13 | description: | |
| 14 | Bindings for the Analog Devices MAX11410 ADC device. Datasheet can be |
| 15 | found here: |
| 16 | https://datasheets.maximintegrated.com/en/ds/MAX11410.pdf |
| 17 | |
| 18 | properties: |
| 19 | compatible: |
| 20 | enum: |
| 21 | - adi,max11410 |
| 22 | |
| 23 | reg: |
| 24 | maxItems: 1 |
| 25 | |
| 26 | interrupts: |
| 27 | minItems: 1 |
| 28 | maxItems: 2 |
| 29 | |
| 30 | interrupt-names: |
| 31 | description: Name of the gpio pin of max11410 used for IRQ |
| 32 | minItems: 1 |
| 33 | items: |
| 34 | - enum: [gpio0, gpio1] |
| 35 | - const: gpio1 |
| 36 | |
| 37 | '#address-cells': |
| 38 | const: 1 |
| 39 | |
| 40 | '#size-cells': |
| 41 | const: 0 |
| 42 | |
| 43 | avdd-supply: |
| 44 | description: Optional avdd supply. Used as reference when no explicit reference supplied. |
| 45 | |
| 46 | vref0p-supply: |
| 47 | description: vref0p supply can be used as reference for conversion. |
| 48 | |
| 49 | vref1p-supply: |
| 50 | description: vref1p supply can be used as reference for conversion. |
| 51 | |
| 52 | vref2p-supply: |
| 53 | description: vref2p supply can be used as reference for conversion. |
| 54 | |
| 55 | vref0n-supply: |
| 56 | description: vref0n supply can be used as reference for conversion. |
| 57 | |
| 58 | vref1n-supply: |
| 59 | description: vref1n supply can be used as reference for conversion. |
| 60 | |
| 61 | vref2n-supply: |
| 62 | description: vref2n supply can be used as reference for conversion. |
| 63 | |
| 64 | spi-max-frequency: |
| 65 | maximum: 8000000 |
| 66 | |
| 67 | patternProperties: |
| 68 | "^channel(@[0-9])?$": |
| 69 | $ref: adc.yaml |
| 70 | type: object |
| 71 | description: Represents the external channels which are connected to the ADC. |
| 72 | |
| 73 | properties: |
| 74 | reg: |
| 75 | description: The channel number in single-ended mode. |
| 76 | minimum: 0 |
| 77 | maximum: 9 |
| 78 | |
| 79 | adi,reference: |
| 80 | description: | |
| 81 | Select the reference source to use when converting on |
| 82 | the specific channel. Valid values are: |
| 83 | 0: VREF0P/VREF0N |
| 84 | 1: VREF1P/VREF1N |
| 85 | 2: VREF2P/VREF2N |
| 86 | 3: AVDD/AGND |
| 87 | 4: VREF0P/AGND |
| 88 | 5: VREF1P/AGND |
| 89 | 6: VREF2P/AGND |
| 90 | If this field is left empty, AVDD/AGND is selected. |
| 91 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 92 | enum: [0, 1, 2, 3, 4, 5, 6] |
| 93 | default: 3 |
| 94 | |
| 95 | adi,input-mode: |
| 96 | description: | |
| 97 | Select signal path of input channels. Valid values are: |
| 98 | 0: Buffered, low-power, unity-gain path (default) |
| 99 | 1: Bypass path |
| 100 | 2: PGA path |
| 101 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 102 | enum: [0, 1, 2] |
| 103 | default: 0 |
| 104 | |
| 105 | diff-channels: true |
| 106 | |
| 107 | bipolar: true |
| 108 | |
| 109 | settling-time-us: true |
| 110 | |
| 111 | adi,buffered-vrefp: |
| 112 | description: Enable buffered mode for positive reference. |
| 113 | type: boolean |
| 114 | |
| 115 | adi,buffered-vrefn: |
| 116 | description: Enable buffered mode for negative reference. |
| 117 | type: boolean |
| 118 | |
| 119 | required: |
| 120 | - reg |
| 121 | |
| 122 | additionalProperties: false |
| 123 | |
| 124 | required: |
| 125 | - compatible |
| 126 | - reg |
| 127 | |
| 128 | allOf: |
| 129 | - $ref: /schemas/spi/spi-peripheral-props.yaml# |
| 130 | |
| 131 | unevaluatedProperties: false |
| 132 | |
| 133 | examples: |
| 134 | - | |
| 135 | #include <dt-bindings/interrupt-controller/irq.h> |
| 136 | spi { |
| 137 | #address-cells = <1>; |
| 138 | #size-cells = <0>; |
| 139 | |
| 140 | adc@0 { |
| 141 | reg = <0>; |
| 142 | compatible = "adi,max11410"; |
| 143 | spi-max-frequency = <8000000>; |
| 144 | |
| 145 | interrupt-parent = <&gpio>; |
| 146 | interrupts = <25 IRQ_TYPE_EDGE_FALLING>; |
| 147 | interrupt-names = "gpio1"; |
| 148 | |
| 149 | avdd-supply = <&adc_avdd>; |
| 150 | |
| 151 | vref1p-supply = <&adc_vref1p>; |
| 152 | vref1n-supply = <&adc_vref1n>; |
| 153 | |
| 154 | #address-cells = <1>; |
| 155 | #size-cells = <0>; |
| 156 | |
| 157 | channel@0 { |
| 158 | reg = <0>; |
| 159 | }; |
| 160 | |
| 161 | channel@1 { |
| 162 | reg = <1>; |
| 163 | diff-channels = <2 3>; |
| 164 | adi,reference = <1>; |
| 165 | bipolar; |
| 166 | settling-time-us = <100000>; |
| 167 | }; |
| 168 | |
| 169 | channel@2 { |
| 170 | reg = <2>; |
| 171 | diff-channels = <7 9>; |
| 172 | adi,reference = <5>; |
| 173 | adi,input-mode = <2>; |
| 174 | settling-time-us = <50000>; |
| 175 | }; |
| 176 | }; |
| 177 | }; |