| 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 2019 Analog Devices Inc. |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/iio/adc/adi,ad7192.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: Analog Devices AD7192 ADC device driver |
| 9 | |
| 10 | maintainers: |
| 11 | - Michael Hennerich <michael.hennerich@analog.com> |
| 12 | |
| 13 | description: | |
| 14 | Bindings for the Analog Devices AD7192 ADC device. Datasheet can be |
| 15 | found here: |
| 16 | https://www.analog.com/media/en/technical-documentation/data-sheets/AD7192.pdf |
| 17 | |
| 18 | properties: |
| 19 | compatible: |
| 20 | enum: |
| 21 | - adi,ad7190 |
| 22 | - adi,ad7192 |
| 23 | - adi,ad7193 |
| 24 | - adi,ad7195 |
| 25 | |
| 26 | reg: |
| 27 | maxItems: 1 |
| 28 | |
| 29 | spi-cpol: true |
| 30 | |
| 31 | spi-cpha: true |
| 32 | |
| 33 | clocks: |
| 34 | maxItems: 1 |
| 35 | description: phandle to the master clock (mclk) |
| 36 | |
| 37 | clock-names: |
| 38 | items: |
| 39 | - const: mclk |
| 40 | |
| 41 | interrupts: |
| 42 | maxItems: 1 |
| 43 | |
| 44 | dvdd-supply: |
| 45 | description: DVdd voltage supply |
| 46 | |
| 47 | avdd-supply: |
| 48 | description: AVdd voltage supply |
| 49 | |
| 50 | vref-supply: |
| 51 | description: VRef voltage supply |
| 52 | |
| 53 | adi,rejection-60-Hz-enable: |
| 54 | description: | |
| 55 | This bit enables a notch at 60 Hz when the first notch of the sinc |
| 56 | filter is at 50 Hz. When REJ60 is set, a filter notch is placed at |
| 57 | 60 Hz when the sinc filter first notch is at 50 Hz. This allows |
| 58 | simultaneous 50 Hz/ 60 Hz rejection. |
| 59 | type: boolean |
| 60 | |
| 61 | adi,refin2-pins-enable: |
| 62 | description: | |
| 63 | External reference applied between the P1/REFIN2(+) and P0/REFIN2(−) pins. |
| 64 | type: boolean |
| 65 | |
| 66 | adi,buffer-enable: |
| 67 | description: | |
| 68 | Enables the buffer on the analog inputs. If cleared, the analog inputs |
| 69 | are unbuffered, lowering the power consumption of the device. If this |
| 70 | bit is set, the analog inputs are buffered, allowing the user to place |
| 71 | source impedances on the front end without contributing gain errors to |
| 72 | the system. |
| 73 | type: boolean |
| 74 | |
| 75 | adi,burnout-currents-enable: |
| 76 | description: | |
| 77 | When this bit is set to 1, the 500 nA current sources in the signal |
| 78 | path are enabled. When BURN = 0, the burnout currents are disabled. |
| 79 | The burnout currents can be enabled only when the buffer is active |
| 80 | and when chop is disabled. |
| 81 | type: boolean |
| 82 | |
| 83 | bipolar: |
| 84 | description: see Documentation/devicetree/bindings/iio/adc/adc.yaml |
| 85 | type: boolean |
| 86 | |
| 87 | required: |
| 88 | - compatible |
| 89 | - reg |
| 90 | - clocks |
| 91 | - clock-names |
| 92 | - interrupts |
| 93 | - dvdd-supply |
| 94 | - avdd-supply |
| 95 | - vref-supply |
| 96 | - spi-cpol |
| 97 | - spi-cpha |
| 98 | |
| 99 | allOf: |
| 100 | - $ref: /schemas/spi/spi-peripheral-props.yaml# |
| 101 | |
| 102 | unevaluatedProperties: false |
| 103 | |
| 104 | examples: |
| 105 | - | |
| 106 | spi { |
| 107 | #address-cells = <1>; |
| 108 | #size-cells = <0>; |
| 109 | |
| 110 | adc@0 { |
| 111 | compatible = "adi,ad7192"; |
| 112 | reg = <0>; |
| 113 | spi-max-frequency = <1000000>; |
| 114 | spi-cpol; |
| 115 | spi-cpha; |
| 116 | clocks = <&ad7192_mclk>; |
| 117 | clock-names = "mclk"; |
| 118 | interrupts = <25 0x2>; |
| 119 | interrupt-parent = <&gpio>; |
| 120 | dvdd-supply = <&dvdd>; |
| 121 | avdd-supply = <&avdd>; |
| 122 | vref-supply = <&vref>; |
| 123 | |
| 124 | adi,refin2-pins-enable; |
| 125 | adi,rejection-60-Hz-enable; |
| 126 | adi,buffer-enable; |
| 127 | adi,burnout-currents-enable; |
| 128 | }; |
| 129 | }; |