mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-22 17:33:01 +00:00
52 lines
2.1 KiB
Plaintext
52 lines
2.1 KiB
Plaintext
|
Kernel driver adt7410
|
||
|
|
=====================
|
||
|
|
|
||
|
|
Supported chips:
|
||
|
|
* Analog Devices ADT7410
|
||
|
|
Prefix: 'adt7410'
|
||
|
|
Addresses scanned: I2C 0x48 - 0x4B
|
||
|
|
Datasheet: Publicly available at the Analog Devices website
|
||
|
|
http://www.analog.com/static/imported-files/data_sheets/ADT7410.pdf
|
||
|
|
|
||
|
|
Author: Hartmut Knaack <knaack.h@gmx.de>
|
||
|
|
|
||
|
|
Description
|
||
|
|
-----------
|
||
|
|
|
||
|
|
The ADT7410 is a temperature sensor with rated temperature range of -55°C to
|
||
|
|
+150°C. It has a high accuracy of +/-0.5°C and can be operated at a resolution
|
||
|
|
of 13 bits (0.0625°C) or 16 bits (0.0078°C). The sensor provides an INT pin to
|
||
|
|
indicate that a minimum or maximum temperature set point has been exceeded, as
|
||
|
|
well as a critical temperature (CT) pin to indicate that the critical
|
||
|
|
temperature set point has been exceeded. Both pins can be set up with a common
|
||
|
|
hysteresis of 0°C - 15°C and a fault queue, ranging from 1 to 4 events. Both
|
||
|
|
pins can individually set to be active-low or active-high, while the whole
|
||
|
|
device can either run in comparator mode or interrupt mode. The ADT7410
|
||
|
|
supports continous temperature sampling, as well as sampling one temperature
|
||
|
|
value per second or even justget one sample on demand for power saving.
|
||
|
|
Besides, it can completely power down its ADC, if power management is
|
||
|
|
required.
|
||
|
|
|
||
|
|
Configuration Notes
|
||
|
|
-------------------
|
||
|
|
|
||
|
|
Since the device uses one hysteresis value, which is an offset to minimum,
|
||
|
|
maximum and critical temperature, it can only be set for temp#_max_hyst.
|
||
|
|
However, temp#_min_hyst and temp#_crit_hyst show their corresponding
|
||
|
|
hysteresis.
|
||
|
|
The device is set to 16 bit resolution and comparator mode.
|
||
|
|
|
||
|
|
sysfs-Interface
|
||
|
|
---------------
|
||
|
|
|
||
|
|
temp#_input - temperature input
|
||
|
|
temp#_min - temperature minimum setpoint
|
||
|
|
temp#_max - temperature maximum setpoint
|
||
|
|
temp#_crit - critical temperature setpoint
|
||
|
|
temp#_min_hyst - hysteresis for temperature minimum (read-only)
|
||
|
|
temp#_max_hyst - hysteresis for temperature maximum (read/write)
|
||
|
|
temp#_crit_hyst - hysteresis for critical temperature (read-only)
|
||
|
|
temp#_min_alarm - temperature minimum alarm flag
|
||
|
|
temp#_max_alarm - temperature maximum alarm flag
|
||
|
|
temp#_crit_alarm - critical temperature alarm flag
|