| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/iio/adc/ti,ads1015.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: TI ADS1015/ADS1115 4 channel I2C analog to digital converter |
| 8 | |
| 9 | maintainers: |
| 10 | - Daniel Baluta <daniel.baluta@nxp.com> |
| 11 | |
| 12 | description: | |
| 13 | Datasheet at: https://www.ti.com/lit/gpn/ads1015 |
| 14 | Supports both single ended and differential channels. |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | enum: |
| 19 | - ti,ads1015 |
| 20 | - ti,ads1115 |
| Tom Rini | 6b642ac | 2024-10-01 12:20:28 -0600 | [diff] [blame] | 21 | - ti,tla2021 |
| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 22 | - ti,tla2024 |
| 23 | |
| 24 | reg: |
| 25 | maxItems: 1 |
| 26 | |
| 27 | interrupts: |
| 28 | maxItems: 1 |
| 29 | |
| 30 | "#address-cells": |
| 31 | const: 1 |
| 32 | |
| 33 | "#size-cells": |
| 34 | const: 0 |
| 35 | |
| 36 | "#io-channel-cells": |
| 37 | const: 1 |
| 38 | |
| 39 | required: |
| 40 | - compatible |
| 41 | - reg |
| 42 | - "#address-cells" |
| 43 | - "#size-cells" |
| 44 | |
| 45 | additionalProperties: false |
| 46 | |
| 47 | patternProperties: |
| 48 | "^channel@[0-7]+$": |
| 49 | type: object |
| 50 | additionalProperties: false |
| 51 | description: |
| 52 | Child nodes needed for each channel that the platform uses. |
| 53 | |
| 54 | properties: |
| 55 | reg: |
| 56 | description: | |
| 57 | 0: Voltage over AIN0 and AIN1. |
| 58 | 1: Voltage over AIN0 and AIN3. |
| 59 | 2: Voltage over AIN1 and AIN3. |
| 60 | 3: Voltage over AIN2 and AIN3. |
| 61 | 4: Voltage over AIN0 and GND. |
| 62 | 5: Voltage over AIN1 and GND. |
| 63 | 6: Voltage over AIN2 and GND. |
| 64 | 7: Voltage over AIN3 and GND. |
| 65 | items: |
| 66 | - minimum: 0 |
| 67 | maximum: 7 |
| 68 | |
| 69 | ti,gain: |
| 70 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 71 | minimum: 0 |
| 72 | maximum: 5 |
| 73 | description: | |
| 74 | pga is the programmable gain amplifier (values are full scale) |
| 75 | 0: +/- 6.144 V |
| 76 | 1: +/- 4.096 V |
| 77 | 2: +/- 2.048 V (default) |
| 78 | 3: +/- 1.024 V |
| 79 | 4: +/- 0.512 V |
| 80 | 5: +/- 0.256 V |
| 81 | |
| 82 | ti,datarate: |
| 83 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 84 | minimum: 0 |
| 85 | maximum: 7 |
| 86 | description: | |
| 87 | Data acquisition rate in samples per second for ADS1015, TLA2024 |
| 88 | 0: 128 |
| 89 | 1: 250 |
| 90 | 2: 490 |
| 91 | 3: 920 |
| 92 | 4: 1600 (default) |
| 93 | 5: 2400 |
| 94 | 6: 3300 |
| 95 | 7: 3300 |
| 96 | |
| 97 | Data acquisition rate in samples per second for ADS1115 |
| 98 | 0: 8 |
| 99 | 1: 16 |
| 100 | 2: 32 |
| 101 | 3: 64 |
| 102 | 4: 128 (default) |
| 103 | 5: 250 |
| 104 | 6: 475 |
| 105 | 7: 860 |
| 106 | |
| 107 | required: |
| 108 | - reg |
| 109 | |
| 110 | examples: |
| 111 | - | |
| 112 | i2c { |
| 113 | #address-cells = <1>; |
| 114 | #size-cells = <0>; |
| 115 | |
| 116 | adc@49 { |
| 117 | compatible = "ti,ads1015"; |
| 118 | reg = <0x49>; |
| 119 | #address-cells = <1>; |
| 120 | #size-cells = <0>; |
| 121 | channel@0 { |
| 122 | reg = <0>; |
| 123 | }; |
| 124 | channel@4 { |
| 125 | reg = <4>; |
| 126 | ti,gain = <3>; |
| 127 | ti,datarate = <5>; |
| 128 | }; |
| 129 | }; |
| 130 | }; |
| 131 | ... |