| Hans de Goede | a98d506 | 2011-03-21 17:59:36 +0100 | [diff] [blame] | 1 | Kernel driver sch5627 |
| 2 | ===================== |
| 3 | |
| 4 | Supported chips: |
| Mauro Carvalho Chehab | 42c027a | 2019-04-17 06:46:12 -0300 | [diff] [blame] | 5 | |
| Hans de Goede | a98d506 | 2011-03-21 17:59:36 +0100 | [diff] [blame] | 6 | * SMSC SCH5627 |
| Mauro Carvalho Chehab | 42c027a | 2019-04-17 06:46:12 -0300 | [diff] [blame] | 7 | |
| Hans de Goede | a98d506 | 2011-03-21 17:59:36 +0100 | [diff] [blame] | 8 | Prefix: 'sch5627' |
| Mauro Carvalho Chehab | 42c027a | 2019-04-17 06:46:12 -0300 | [diff] [blame] | 9 | |
| Hans de Goede | a98d506 | 2011-03-21 17:59:36 +0100 | [diff] [blame] | 10 | Addresses scanned: none, address read from Super I/O config space |
| Mauro Carvalho Chehab | 42c027a | 2019-04-17 06:46:12 -0300 | [diff] [blame] | 11 | |
| Hans de Goede | a98d506 | 2011-03-21 17:59:36 +0100 | [diff] [blame] | 12 | Datasheet: Application Note available upon request |
| 13 | |
| 14 | Author: Hans de Goede <hdegoede@redhat.com> |
| 15 | |
| 16 | |
| 17 | Description |
| 18 | ----------- |
| 19 | |
| 20 | SMSC SCH5627 Super I/O chips include complete hardware monitoring |
| 21 | capabilities. They can monitor up to 5 voltages, 4 fans and 8 temperatures. |
| 22 | |
| Armin Wolf | aa9f833 | 2022-02-24 07:12:10 +0100 | [diff] [blame] | 23 | In addition, the SCH5627 exports data describing which temperature sensors |
| 24 | affect the speed of each fan. Setting pwmX_auto_channels_temp to 0 forces |
| 25 | the corresponding fan to full speed until another value is written. |
| 26 | |
| Hans de Goede | 312869e | 2012-03-18 13:05:08 +0100 | [diff] [blame] | 27 | The SMSC SCH5627 hardware monitoring part also contains an integrated |
| 28 | watchdog. In order for this watchdog to function some motherboard specific |
| 29 | initialization most be done by the BIOS, so if the watchdog is not enabled |
| 30 | by the BIOS the sch5627 driver will not register a watchdog device. |
| 31 | |
| Hans de Goede | a98d506 | 2011-03-21 17:59:36 +0100 | [diff] [blame] | 32 | The hardware monitoring part of the SMSC SCH5627 is accessed by talking |
| 33 | through an embedded microcontroller. An application note describing the |
| 34 | protocol for communicating with the microcontroller is available upon |
| 35 | request. Please mail me if you want a copy. |
