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- 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
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