====
This driver supercedes the NCT6775F and NCT6776F support in the W83627EHF
-driver. It supports NCT6775F, NCT6776F, and NCT6779D.
+driver. It supports NCT6106D, NCT6775F, NCT6776F, NCT6779D, NCT6791D, and
+NCT6792D.
-Preliminary support for NCT6106D is available in the nct6106 git branch.
-The code in this branch is untested.
-
-The driver should be in shape for upstream integration, and has been submitted
-to the lm-sensors mailing list for that purpose. Testing and review feedback
-will be required for the driver to be actually integrated. If you use the latest
-version of this driver, and/or if you can provide review feedback, please let
-the author know.
+The driver is also available in the upstream kernel. This version is maintained
+for backward compatibility with older kernels. I am trying to keep it buildable
+for older kernels, but may miss a problem once in a while. If you have a problem
+compiling this driver with any kernel version 2.6.32 or later, please let me
+know.
Kernel driver NCT6775
=======================
Supported chips:
- * Nuvoton NCT6106
+ * Nuvoton NCT6102D/NCT6104D/NCT6106D
Prefix: 'nct6106'
Addresses scanned: ISA address retrieved from Super I/O registers
Datasheet: Available from Nuvoton upon request
Prefix: 'nct6779'
Addresses scanned: ISA address retrieved from Super I/O registers
Datasheet: Available from Nuvoton upon request
+ * Nuvoton NCT6791D
+ Prefix: 'nct6791'
+ Addresses scanned: ISA address retrieved from Super I/O registers
+ Datasheet: Available from Nuvoton upon request
+ * Nuvoton NCT6792D
+ Prefix: 'nct6792'
+ Addresses scanned: ISA address retrieved from Super I/O registers
+ Datasheet: Available from Nuvoton upon request
Authors:
Guenter Roeck <linux@roeck-us.net>
+ David Bartley <andareed@gmail.com> (NCT6791D support)
Description
-----------
This driver implements support for the Nuvoton NCT6106D, NCT6775F, NCT6776F,
-and NCT6779D super I/O chips. We will refer to them collectively as Nuvoton
-chips.
+NCT6779D, NCT6791D, and NCT6792D super I/O chips. We will refer to them
+collectively as Nuvoton chips.
The chips implement up to 8 temperature sensors depending on the chip type and
configuration. Temperatures used to control fan speed are reported separately.
Temperature at which the matching pwm is enabled.
pwm[1-5]_step_up_time milliseconds [ms] before fan speed is increased
pwm[1-5]_step_down_time milliseconds [ms] before fan speed is decreased
-pwm[1-5]_step_enable Set to 1 to enable fine grain speed control.
- If disabled, pwm values will increase or decrease to
- the values configured in the auto_point_pwm attributes.
- If enabled, pwm values will be interpolated, resulting
- in a more fine-grained fan control, resulting in a more
- fine-grained fan control
Usage Notes
temperature increases (similar to the raw PECI temperature value - see PECI
specification for details). CPUTIN should therefore be be ignored on ASUS
boards. The CPU temperature on ASUS boards is reported from PECI 0.
+
+Also, there have been reports that not all fan speeds are reported on at least
+some ASUS boards. P9X79 WS is one example, where fan speed is only reported
+for two of the fans on the board.
+
+Note that ASUS does not support Linux on desktop boards (this appears to be
+official ASUS policy) and does not release board specifications, so there is
+nothing we can do to improve support for such boards unless we get board
+specifications or a detailed description on how to control the fans on the
+affected boards.
+
+Known Problems
+--------------
+
+After a suspend/resume cycle, all fan control settings are restored to the BIOS
+defaults.