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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
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Supported chips:
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* SMSC SCH5627
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Prefix: 'sch5627'
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Addresses scanned: none, address read from Super I/O config space
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Datasheet: Application Note available upon request
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Author: Hans de Goede <hdegoede@redhat.com>
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Description
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-----------
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SMSC SCH5627 Super I/O chips include complete hardware monitoring
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capabilities. They can monitor up to 5 voltages, 4 fans and 8 temperatures.
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In addition, the SCH5627 exports data describing which temperature sensors
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affect the speed of each fan. Setting pwmX_auto_channels_temp to 0 forces
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the corresponding fan to full speed until another value is written.
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The SMSC SCH5627 hardware monitoring part also contains an integrated
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watchdog. In order for this watchdog to function some motherboard specific
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initialization most be done by the BIOS, so if the watchdog is not enabled
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by the BIOS the sch5627 driver will not register a watchdog device.
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The hardware monitoring part of the SMSC SCH5627 is accessed by talking
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through an embedded microcontroller. An application note describing the
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protocol for communicating with the microcontroller is available upon
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request. Please mail me if you want a copy.
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