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**
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