mirror of https://gitee.com/openkylin/linux.git
52 lines
1.6 KiB
Plaintext
52 lines
1.6 KiB
Plaintext
Kernel driver max31785
|
|
======================
|
|
|
|
Supported chips:
|
|
* Maxim MAX31785, MAX31785A
|
|
Prefix: 'max31785' or 'max31785a'
|
|
Addresses scanned: -
|
|
Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX31785.pdf
|
|
|
|
Author: Andrew Jeffery <andrew@aj.id.au>
|
|
|
|
Description
|
|
-----------
|
|
|
|
The Maxim MAX31785 is a PMBus device providing closed-loop, multi-channel fan
|
|
management with temperature and remote voltage sensing. Various fan control
|
|
features are provided, including PWM frequency control, temperature hysteresis,
|
|
dual tachometer measurements, and fan health monitoring.
|
|
|
|
For dual rotor fan configuration, the MAX31785 exposes the slowest rotor of the
|
|
two in the fan[1-4]_input attributes.
|
|
|
|
Usage Notes
|
|
-----------
|
|
|
|
This driver does not probe for PMBus devices. You will have to instantiate
|
|
devices explicitly.
|
|
|
|
Sysfs attributes
|
|
----------------
|
|
|
|
fan[1-4]_alarm Fan alarm.
|
|
fan[1-4]_fault Fan fault.
|
|
fan[1-4]_input Fan RPM.
|
|
|
|
in[1-6]_crit Critical maximum output voltage
|
|
in[1-6]_crit_alarm Output voltage critical high alarm
|
|
in[1-6]_input Measured output voltage
|
|
in[1-6]_label "vout[18-23]"
|
|
in[1-6]_lcrit Critical minimum output voltage
|
|
in[1-6]_lcrit_alarm Output voltage critical low alarm
|
|
in[1-6]_max Maximum output voltage
|
|
in[1-6]_max_alarm Output voltage high alarm
|
|
in[1-6]_min Minimum output voltage
|
|
in[1-6]_min_alarm Output voltage low alarm
|
|
|
|
temp[1-11]_crit Critical high temperature
|
|
temp[1-11]_crit_alarm Chip temperature critical high alarm
|
|
temp[1-11]_input Measured temperature
|
|
temp[1-11]_max Maximum temperature
|
|
temp[1-11]_max_alarm Chip temperature high alarm
|