1.. SPDX-License-Identifier: GPL-2.0 2 3Kernel driver lan966x-hwmon 4=========================== 5 6Supported chips: 7 8 * Microchip LAN9668 (sensor in SoC) 9 10 Prefix: 'lan9668-hwmon' 11 12 Datasheet: https://microchip-ung.github.io/lan9668_reginfo 13 14Authors: 15 16 Michael Walle <michael@walle.cc> 17 18Description 19----------- 20 21This driver implements support for the Microchip LAN9668 on-chip 22temperature sensor as well as its fan controller. It provides one 23temperature sensor and one fan controller. The temperature range 24of the sensor is specified from -40 to +125 degrees Celsius and 25its accuracy is +/- 5 degrees Celsius. The fan controller has a 26tacho input and a PWM output with a customizable PWM output 27frequency ranging from ~20Hz to ~650kHz. 28 29No alarms are supported by the SoC. 30 31The driver exports temperature values, fan tacho input and PWM 32settings via the following sysfs files: 33 34**temp1_input** 35 36**fan1_input** 37 38**pwm1** 39 40**pwm1_freq** 41