blob: ecb4fc84d0451a1940115dfe9a4d480cc0e5af5a [file] [log] [blame]
Hans de Goedea98d5062011-03-21 17:59:36 +01001Kernel driver sch5627
2=====================
3
4Supported chips:
Mauro Carvalho Chehab42c027a2019-04-17 06:46:12 -03005
Hans de Goedea98d5062011-03-21 17:59:36 +01006 * SMSC SCH5627
Mauro Carvalho Chehab42c027a2019-04-17 06:46:12 -03007
Hans de Goedea98d5062011-03-21 17:59:36 +01008 Prefix: 'sch5627'
Mauro Carvalho Chehab42c027a2019-04-17 06:46:12 -03009
Hans de Goedea98d5062011-03-21 17:59:36 +010010 Addresses scanned: none, address read from Super I/O config space
Mauro Carvalho Chehab42c027a2019-04-17 06:46:12 -030011
Hans de Goedea98d5062011-03-21 17:59:36 +010012 Datasheet: Application Note available upon request
13
14Author: Hans de Goede <hdegoede@redhat.com>
15
16
17Description
18-----------
19
20SMSC SCH5627 Super I/O chips include complete hardware monitoring
21capabilities. They can monitor up to 5 voltages, 4 fans and 8 temperatures.
22
Armin Wolfaa9f8332022-02-24 07:12:10 +010023In addition, the SCH5627 exports data describing which temperature sensors
24affect the speed of each fan. Setting pwmX_auto_channels_temp to 0 forces
25the corresponding fan to full speed until another value is written.
26
Hans de Goede312869e2012-03-18 13:05:08 +010027The SMSC SCH5627 hardware monitoring part also contains an integrated
28watchdog. In order for this watchdog to function some motherboard specific
29initialization most be done by the BIOS, so if the watchdog is not enabled
30by the BIOS the sch5627 driver will not register a watchdog device.
31
Hans de Goedea98d5062011-03-21 17:59:36 +010032The hardware monitoring part of the SMSC SCH5627 is accessed by talking
33through an embedded microcontroller. An application note describing the
34protocol for communicating with the microcontroller is available upon
35request. Please mail me if you want a copy.