| Kernel driver nct6683 | |
| ===================== | |
| Supported chips: | |
| * Nuvoton NCT6683D | |
| Prefix: 'nct6683' | |
| Addresses scanned: ISA address retrieved from Super I/O registers | |
| Datasheet: Available from Nuvoton upon request | |
| Authors: | |
| Guenter Roeck <linux@roeck-us.net> | |
| Description | |
| ----------- | |
| This driver implements support for the Nuvoton NCT6683D eSIO chip. | |
| The chips implement up to shared 32 temperature and voltage sensors. | |
| It supports up to 16 fan rotation sensors and up to 8 fan control engines. | |
| Temperatures are measured in degrees Celsius. Measurement resolution is | |
| 0.5 degrees C. | |
| Voltage sensors (also known as IN sensors) report their values in millivolts. | |
| Fan rotation speeds are reported in RPM (rotations per minute). | |
| Usage Note | |
| ---------- | |
| Limit register locations on Intel boards with EC firmware version 1.0 | |
| build date 04/03/13 do not match the register locations in the Nuvoton | |
| datasheet. Nuvoton confirms that Intel uses a special firmware version | |
| with different register addresses. The specification describing the Intel | |
| firmware is held under NDA by Nuvoton and Intel and not available | |
| to the public. | |
| Some of the register locations can be reverse engineered; others are too | |
| well hidden. Given this, writing any values from the operating system is | |
| considered too risky with this firmware and has been disabled. All limits | |
| must all be written from the BIOS. | |
| The driver has only been tested with the Intel firmware, and by default | |
| only instantiates on Intel boards. To enable it on non-Intel boards, | |
| set the 'force' module parameter to 1. | |
| Tested Boards and Firmware Versions | |
| ----------------------------------- | |
| The driver has been reported to work with the following boards and | |
| firmware versions. | |
| Board Firmware version | |
| --------------------------------------------------------------- | |
| Intel DH87RL NCT6683D EC firmware version 1.0 build 04/03/13 | |
| Intel DH87MC NCT6683D EC firmware version 1.0 build 04/03/13 | |
| Intel DB85FL NCT6683D EC firmware version 1.0 build 04/03/13 |