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1Kernel driver sch56272=====================3 4Supported chips:5 6 * SMSC SCH56277 8 Prefix: 'sch5627'9 10 Addresses scanned: none, address read from Super I/O config space11 12 Datasheet: Application Note available upon request13 14Author: Hans de Goede <hdegoede@redhat.com>15 16 17Description18-----------19 20SMSC SCH5627 Super I/O chips include complete hardware monitoring21capabilities. They can monitor up to 5 voltages, 4 fans and 8 temperatures.22 23In addition, the SCH5627 exports data describing which temperature sensors24affect the speed of each fan. Setting pwmX_auto_channels_temp to 0 forces25the corresponding fan to full speed until another value is written.26 27The SMSC SCH5627 hardware monitoring part also contains an integrated28watchdog. In order for this watchdog to function some motherboard specific29initialization most be done by the BIOS, so if the watchdog is not enabled30by the BIOS the sch5627 driver will not register a watchdog device.31 32The hardware monitoring part of the SMSC SCH5627 is accessed by talking33through an embedded microcontroller. An application note describing the34protocol for communicating with the microcontroller is available upon35request. Please mail me if you want a copy.36 37 38Controlling fan speed39---------------------40 41The SCH5627 allows for partially controlling the fan speed. If a temperature42channel excedes tempX_max, all fans are forced to maximum speed. The same is not43true for tempX_crit, presumably some other measures to cool down the system are44take in this case.45In which way the value of fanX_min affects the fan speed is currently unknown.46