ti,amc6821.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/hwmon/ti,amc6821.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: AMC6821 Intelligent Temperature Monitor and PWM Fan Controller
  8
  9maintainers:
 10  - Farouk Bouabid <farouk.bouabid@cherry.de>
 11  - Quentin Schulz <quentin.schulz@cherry.de>
 12
 13description:
 14  Intelligent temperature monitor and pulse-width modulation (PWM) fan
 15  controller.
 16
 17properties:
 18  compatible:
 19    oneOf:
 20      - items:
 21          - const: tsd,mule
 22          - const: ti,amc6821
 23      - const: ti,amc6821
 24
 25  reg:
 26    maxItems: 1
 27
 28  i2c-mux:
 29    type: object
 30
 31  fan:
 32    $ref: fan-common.yaml#
 33    unevaluatedProperties: false
 34
 35    properties:
 36      cooling-levels:
 37        description: PWM duty cycle values corresponding to thermal cooling states.
 38        items:
 39          maximum: 255
 40
 41  "#pwm-cells":
 42    const: 2
 43    description: |
 44      Number of cells in a PWM specifier.
 45      - cell 0: PWM period in nanoseconds
 46      - cell 1: PWM polarity: 0 or PWM_POLARITY_INVERTED
 47
 48required:
 49  - compatible
 50  - reg
 51
 52if:
 53  properties:
 54    compatible:
 55      contains:
 56        const: tsd,mule
 57
 58then:
 59  required:
 60    - i2c-mux
 61
 62additionalProperties: false
 63
 64examples:
 65  - |
 66    i2c {
 67        #address-cells = <1>;
 68        #size-cells = <0>;
 69
 70        fan_controller: fan@18 {
 71            compatible = "ti,amc6821";
 72            reg = <0x18>;
 73            #pwm-cells = <2>;
 74
 75            fan {
 76                pwms = <&fan_controller 40000 0>;
 77            };
 78        };
 79    };
 80
 81  - |
 82    i2c {
 83        #address-cells = <1>;
 84        #size-cells = <0>;
 85
 86        fan@18 {
 87            compatible = "tsd,mule", "ti,amc6821";
 88            reg = <0x18>;
 89
 90            i2c-mux {
 91                compatible = "tsd,mule-i2c-mux";
 92                #address-cells = <1>;
 93                #size-cells = <0>;
 94
 95                i2c@0 {
 96                    reg = <0x0>;
 97                    #address-cells = <1>;
 98                    #size-cells = <0>;
 99
100                    rtc@6f {
101                        compatible = "isil,isl1208";
102                        reg = <0x6f>;
103                    };
104                };
105            };
106        };
107    };
108...