| Tom Rini | 6b642ac | 2024-10-01 12:20:28 -0600 | [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/maxim,max6639.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: Maxim max6639 |
| 9 | |
| 10 | maintainers: |
| 11 | - Naresh Solanki <naresh.solanki@9elements.com> |
| 12 | |
| 13 | description: | |
| 14 | The MAX6639 is a 2-channel temperature monitor with dual, automatic, PWM |
| 15 | fan-speed controller. It monitors its own temperature and one external |
| 16 | diode-connected transistor or the temperatures of two external diode-connected |
| 17 | transistors, typically available in CPUs, FPGAs, or GPUs. |
| 18 | |
| 19 | Datasheets: |
| 20 | https://datasheets.maximintegrated.com/en/ds/MAX6639-MAX6639F.pdf |
| 21 | |
| 22 | properties: |
| 23 | compatible: |
| 24 | enum: |
| 25 | - maxim,max6639 |
| 26 | |
| 27 | reg: |
| 28 | maxItems: 1 |
| 29 | |
| 30 | '#address-cells': |
| 31 | const: 1 |
| 32 | |
| 33 | '#size-cells': |
| 34 | const: 0 |
| 35 | |
| 36 | '#pwm-cells': |
| 37 | const: 3 |
| 38 | |
| 39 | required: |
| 40 | - compatible |
| 41 | - reg |
| 42 | |
| 43 | patternProperties: |
| 44 | "^fan@[0-1]$": |
| 45 | type: object |
| 46 | description: |
| 47 | Represents the two fans and their specific configuration. |
| 48 | |
| 49 | $ref: fan-common.yaml# |
| 50 | |
| 51 | unevaluatedProperties: false |
| 52 | |
| 53 | properties: |
| 54 | reg: |
| 55 | description: |
| 56 | The fan number. |
| 57 | |
| 58 | required: |
| 59 | - reg |
| 60 | |
| 61 | additionalProperties: false |
| 62 | |
| 63 | examples: |
| 64 | - | |
| 65 | i2c { |
| 66 | #address-cells = <1>; |
| 67 | #size-cells = <0>; |
| 68 | |
| 69 | fan1: fan-controller@10 { |
| 70 | compatible = "maxim,max6639"; |
| 71 | reg = <0x10>; |
| 72 | #address-cells = <1>; |
| 73 | #size-cells = <0>; |
| 74 | #pwm-cells = <3>; |
| 75 | |
| 76 | fan@0 { |
| 77 | reg = <0x0>; |
| 78 | pulses-per-revolution = <2>; |
| 79 | max-rpm = <4000>; |
| 80 | target-rpm = <1000>; |
| 81 | pwms = <&fan1 0 25000 0>; |
| 82 | }; |
| 83 | |
| 84 | fan@1 { |
| 85 | reg = <0x1>; |
| 86 | pulses-per-revolution = <2>; |
| 87 | max-rpm = <8000>; |
| 88 | pwms = <&fan1 1 25000 0>; |
| 89 | }; |
| 90 | }; |
| 91 | }; |
| 92 | ... |