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linux-7.2.3/Documentation/hwmon/max31730.rst
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Kernel driver max31730
======================
Supported chips:
* Maxim MAX31730
Prefix: 'max31730'
Addresses scanned: 0x1c, 0x1d, 0x1e, 0x1f, 0x4c, 0x4d, 0x4e, 0x4f
Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/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
=================== == =======================================================