mirror of
https://github.com/torvalds/linux.git
synced 2024-12-04 18:13:04 +00:00
aa9f833dfc
After doing some research, it seems that Fujitsu's hardware monitoring solution exports data describing which temperature sensors affect which fans, similar to the data in fan_source of the ftsteutates driver. Writing 0 into these registers forces the fans to full speed. Export this data with standard attributes. Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20220224061210.16452-3-W_Armin@gmx.de Signed-off-by: Guenter Roeck <linux@roeck-us.net>
36 lines
1.2 KiB
ReStructuredText
36 lines
1.2 KiB
ReStructuredText
Kernel driver sch5627
|
|
=====================
|
|
|
|
Supported chips:
|
|
|
|
* SMSC SCH5627
|
|
|
|
Prefix: 'sch5627'
|
|
|
|
Addresses scanned: none, address read from Super I/O config space
|
|
|
|
Datasheet: Application Note available upon request
|
|
|
|
Author: Hans de Goede <hdegoede@redhat.com>
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
SMSC SCH5627 Super I/O chips include complete hardware monitoring
|
|
capabilities. They can monitor up to 5 voltages, 4 fans and 8 temperatures.
|
|
|
|
In addition, the SCH5627 exports data describing which temperature sensors
|
|
affect the speed of each fan. Setting pwmX_auto_channels_temp to 0 forces
|
|
the corresponding fan to full speed until another value is written.
|
|
|
|
The SMSC SCH5627 hardware monitoring part also contains an integrated
|
|
watchdog. In order for this watchdog to function some motherboard specific
|
|
initialization most be done by the BIOS, so if the watchdog is not enabled
|
|
by the BIOS the sch5627 driver will not register a watchdog device.
|
|
|
|
The hardware monitoring part of the SMSC SCH5627 is accessed by talking
|
|
through an embedded microcontroller. An application note describing the
|
|
protocol for communicating with the microcontroller is available upon
|
|
request. Please mail me if you want a copy.
|