maxim,max31790.yaml

 1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
 2%YAML 1.2
 3---
 4$id: http://devicetree.org/schemas/hwmon/maxim,max31790.yaml#
 5$schema: http://devicetree.org/meta-schemas/core.yaml#
 6
 7title: The Maxim MAX31790 Fan Controller
 8
 9maintainers:
10  - Guenter Roeck <linux@roeck-us.net>
11  - Chanh Nguyen <chanh@os.amperecomputing.com>
12
13description: >
14  The MAX31790 controls the speeds of up to six fans using six
15  independent PWM outputs. The desired fan speeds (or PWM duty cycles)
16  are written through the I2C interface.
17
18  Datasheets:
19    https://datasheets.maximintegrated.com/en/ds/MAX31790.pdf
20
21properties:
22  compatible:
23    enum:
24      - maxim,max31785
25      - maxim,max31785a
26      - maxim,max31785b
27      - maxim,max31790
28
29  reg:
30    maxItems: 1
31
32  clocks:
33    maxItems: 1
34
35  resets:
36    maxItems: 1
37
38  '#address-cells':
39    const: 1
40
41  '#size-cells':
42    const: 0
43
44  "#pwm-cells":
45    const: 1
46
47patternProperties:
48  "^fan@[0-9]+$":
49    $ref: fan-common.yaml#
50    unevaluatedProperties: false
51
52required:
53  - compatible
54  - reg
55
56additionalProperties: false
57
58examples:
59  - |
60    i2c {
61      #address-cells = <1>;
62      #size-cells = <0>;
63
64      pwm_provider: fan-controller@20 {
65        compatible = "maxim,max31790";
66        reg = <0x20>;
67        clocks = <&sys_clk>;
68        resets = <&reset 0>;
69        #address-cells = <1>;
70        #pwm-cells = <1>;
71        #size-cells = <0>;
72
73        fan@0 {
74          reg = <0x0>;
75          pwms = <&pwm_provider 1>;
76        };
77
78        fan@1 {
79          reg = <0x1>;
80          pwms = <&pwm_provider 2>;
81        };
82      };
83    };
84