mirror of https://gitee.com/openkylin/linux.git
45 lines
1.5 KiB
ReStructuredText
45 lines
1.5 KiB
ReStructuredText
|
Kernel driver max31790
|
||
|
|
======================
|
||
|
|
|
||
|
|
Supported chips:
|
||
|
|
|
||
|
|
* Maxim MAX31730
|
||
|
|
|
||
|
|
Prefix: 'max31730'
|
||
|
|
|
||
|
|
Addresses scanned: 0x1c, 0x1d, 0x1e, 0x1f, 0x4c, 0x4d, 0x4e, 0x4f
|
||
|
|
|
||
|
|
Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX31730.pdf
|
||
|
|
|
||
|
|
Author: Guenter Roeck <linux@roeck-us.net>
|
||
|
|
|
||
|
|
|
||
|
|
Description
|
||
|
|
-----------
|
||
|
|
|
||
|
|
This driver implements support for Maxim MAX31730.
|
||
|
|
|
||
|
|
The MAX31730 temperature sensor monitors its own temperature and the
|
||
|
|
temperatures of three external diode-connected transistors. The operating
|
||
|
|
supply voltage is from 3.0V to 3.6V. Resistance cancellation compensates
|
||
|
|
for high series resistance in circuit-board traces and the external thermal
|
||
|
|
diode, while beta compensation corrects for temperature-measurement
|
||
|
|
errors due to low-beta sensing transistors.
|
||
|
|
|
||
|
|
|
||
|
|
Sysfs entries
|
||
|
|
-------------
|
||
|
|
|
||
|
|
=================== == =======================================================
|
||
|
|
temp[1-4]_enable RW Temperature enable/disable
|
||
|
|
Set to 0 to enable channel, 0 to disable
|
||
|
|
temp[1-4]_input RO Temperature input
|
||
|
|
temp[2-4]_fault RO Fault indicator for remote channels
|
||
|
|
temp[1-4]_max RW Maximum temperature
|
||
|
|
temp[1-4]_max_alarm RW Maximum temperature alarm
|
||
|
|
temp[1-4]_min RW Minimum temperature. Common for all channels.
|
||
|
|
Only temp1_min is writeable.
|
||
|
|
temp[1-4]_min_alarm RO Minimum temperature alarm
|
||
|
|
temp[2-4]_offset RW Temperature offset for remote channels
|
||
|
|
=================== == =======================================================
|