nuvoton,nct7802.yaml

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    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     };

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