| 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 | |
| 5 | $id: http://devicetree.org/schemas/hwmon/nuvoton,nct7802.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: Nuvoton NCT7802Y Hardware Monitoring IC |
| 9 | |
| 10 | maintainers: |
| 11 | - Guenter Roeck <linux@roeck-us.net> |
| 12 | |
| 13 | description: | |
| 14 | The NCT7802Y is a hardware monitor IC which supports one on-die and up to |
| 15 | 5 remote temperature sensors with SMBus interface. |
| 16 | |
| 17 | Datasheets: |
| 18 | https://www.nuvoton.com/export/resource-files/Nuvoton_NCT7802Y_Datasheet_V12.pdf |
| 19 | |
| 20 | additionalProperties: false |
| 21 | |
| 22 | properties: |
| 23 | compatible: |
| 24 | enum: |
| 25 | - nuvoton,nct7802 |
| 26 | |
| 27 | reg: |
| 28 | maxItems: 1 |
| 29 | |
| 30 | "#address-cells": |
| 31 | const: 1 |
| 32 | |
| 33 | "#size-cells": |
| 34 | const: 0 |
| 35 | |
| 36 | patternProperties: |
| 37 | "^channel@[0-3]$": |
| 38 | type: object |
| 39 | |
| 40 | additionalProperties: false |
| 41 | |
| 42 | properties: |
| 43 | reg: |
| 44 | items: |
| 45 | - enum: |
| 46 | - 0 # Local Temperature Sensor ("LTD") |
| 47 | - 1 # Remote Temperature Sensor or Voltage Sensor 1 ("RTD1") |
| 48 | - 2 # Remote Temperature Sensor or Voltage Sensor 2 ("RTD2") |
| 49 | - 3 # Remote Temperature Sensor or Voltage Sensor 3 ("RTD3") |
| 50 | |
| 51 | sensor-type: |
| 52 | items: |
| 53 | - enum: |
| 54 | - temperature |
| 55 | - voltage |
| 56 | |
| 57 | temperature-mode: |
| 58 | items: |
| 59 | - enum: |
| 60 | - thermistor |
| 61 | - thermal-diode |
| 62 | |
| 63 | required: |
| 64 | - reg |
| 65 | |
| 66 | allOf: |
| 67 | # For channels RTD1, RTD2 and RTD3, require sensor-type to be set. |
| 68 | # Otherwise (for all other channels), do not allow temperature-mode to be |
| 69 | # set. |
| 70 | - if: |
| 71 | properties: |
| 72 | reg: |
| 73 | items: |
| 74 | - enum: |
| 75 | - 1 |
| 76 | - 2 |
| 77 | - 3 |
| 78 | then: |
| 79 | required: |
| 80 | - sensor-type |
| 81 | else: |
| 82 | not: |
| 83 | required: |
| 84 | - sensor-type |
| 85 | |
| 86 | # For channels RTD1 and RTD2 and if sensor-type is "temperature", require |
| 87 | # temperature-mode to be set. Otherwise (for all other channels or |
| 88 | # sensor-type settings), do not allow temperature-mode to be set |
| 89 | - if: |
| 90 | properties: |
| 91 | reg: |
| 92 | items: |
| 93 | - enum: |
| 94 | - 1 |
| 95 | - 2 |
| 96 | sensor-type: |
| 97 | items: |
| 98 | - enum: |
| 99 | - temperature |
| 100 | then: |
| 101 | required: |
| 102 | - temperature-mode |
| 103 | else: |
| 104 | not: |
| 105 | required: |
| 106 | - temperature-mode |
| 107 | |
| 108 | required: |
| 109 | - compatible |
| 110 | - reg |
| 111 | |
| 112 | examples: |
| 113 | - | |
| 114 | i2c { |
| 115 | #address-cells = <1>; |
| 116 | #size-cells = <0>; |
| 117 | |
| 118 | nct7802@28 { |
| 119 | compatible = "nuvoton,nct7802"; |
| 120 | reg = <0x28>; |
| 121 | |
| 122 | #address-cells = <1>; |
| 123 | #size-cells = <0>; |
| 124 | |
| 125 | channel@0 { /* LTD */ |
| 126 | reg = <0>; |
| 127 | }; |
| 128 | |
| 129 | channel@1 { /* RTD1 */ |
| 130 | reg = <1>; |
| 131 | sensor-type = "voltage"; |
| 132 | }; |
| 133 | |
| 134 | channel@2 { /* RTD2 */ |
| 135 | reg = <2>; |
| 136 | sensor-type = "temperature"; |
| 137 | temperature-mode = "thermal-diode"; |
| 138 | }; |
| 139 | |
| 140 | channel@3 { /* RTD3 */ |
| 141 | reg = <3>; |
| 142 | sensor-type = "temperature"; |
| 143 | }; |
| 144 | }; |
| 145 | }; |