projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| c8f55be4 MW |
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** |