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1 | .. SPDX-License-Identifier: GPL-2.0 |
2 | ||
3 | Kernel driver lan966x-hwmon | |
4 | =========================== | |
5 | ||
6 | Supported chips: | |
7 | ||
8 | * Microchip LAN9668 (sensor in SoC) | |
9 | ||
10 | Prefix: 'lan9668-hwmon' | |
11 | ||
12 | Datasheet: https://microchip-ung.github.io/lan9668_reginfo | |
13 | ||
14 | Authors: | |
15 | ||
16 | Michael Walle <michael@walle.cc> | |
17 | ||
18 | Description | |
19 | ----------- | |
20 | ||
21 | This driver implements support for the Microchip LAN9668 on-chip | |
22 | temperature sensor as well as its fan controller. It provides one | |
23 | temperature sensor and one fan controller. The temperature range | |
24 | of the sensor is specified from -40 to +125 degrees Celsius and | |
25 | its accuracy is +/- 5 degrees Celsius. The fan controller has a | |
26 | tacho input and a PWM output with a customizable PWM output | |
27 | frequency ranging from ~20Hz to ~650kHz. | |
28 | ||
29 | No alarms are supported by the SoC. | |
30 | ||
31 | The driver exports temperature values, fan tacho input and PWM | |
32 | settings via the following sysfs files: | |
33 | ||
34 | **temp1_input** | |
35 | ||
36 | **fan1_input** | |
37 | ||
38 | **pwm1** | |
39 | ||
40 | **pwm1_freq** |