Module Parameters¶

• force_i2c: intInitialize the I2C address of the sensors
• init: int(default is 1)Use ‘init=0’ to bypass initializing the chip.Try this if your computer crashes when you load the module.

Description¶

This driver implements support for ISA accessesonly forthe Winbond W83627HF, W83627THF, W83697HF and W83637HF Super I/O chips.We will refer to them collectively as Winbond chips.

This driver supports ISA accesses, which should be more reliablethan i2c accesses. Also, for Tyan boards which contain both aSuper I/O chip and a second i2c-only Winbond chip (often a W83782D),using this driver will avoid i2c address conflicts and complexinitialization that were required in the w83781d driver.

If you really want i2c accesses for these Super I/O chips,use the w83781d driver. However this is not the preferred methodnow that this ISA driver has been developed.

Thew83627_HF_ uses pins 110-106 as VID0-VID4. Thew83627_THF_ uses thesame pins as GPIO[0:4]. Technically, thew83627_THF_ does not support aVID reading. However the two chips have the identical 128 pin package. So,it is possible or even likely for a w83627thf to have the VID signals routedto these pins despite their not being labeled for that purpose. Therefore,the w83627thf driver interprets these as VID. If the VID on your boarddoesn’t work, first see doc/vid in the lm_sensors package[1]. If that stilldoesn’t help, you may just ignore the bogus VID reading with no harm done.

For further information on this driver see the w83781d driver documentation.

[1]http://www.lm-sensors.org/browser/lm-sensors/trunk/doc/vid

Forcing the address¶

The driver used to have a module parameter named force_addr, which couldbe used to force the base I/O address of the hardware monitoring block.This was meant as a workaround for mainboards with a broken BIOS. Thismodule parameter is gone for technical reasons. If you need this feature,you can obtain the same result by using the isaset tool (part oflm-sensors) before loading the driver:

# Enter the Super I/O config space:

isaset -y -f 0x2e 0x87isaset -y -f 0x2e 0x87

# Select the hwmon logical device:

isaset -y 0x2e 0x2f 0x07 0x0b

# Set the base I/O address (to 0x290 in this example):

isaset -y 0x2e 0x2f 0x60 0x02isaset -y 0x2e 0x2f 0x61 0x90

# Exit the Super-I/O config space:

isaset -y -f 0x2e 0xaa

The above sequence assumes a Super-I/O config space at 0x2e/0x2f, but0x4e/0x4f is also possible.

Voltage pin mapping¶

Here is a summary of the voltage pin mapping for the W83627THF. Thiscan be useful to convert data provided by board manufacturers intoworking libsensors configuration statements:

• W83627THF

  Pin	Name	Register	Sysfs attribute
  100	CPUVCORE	20h	in0
  99	VIN0	21h	in1
  98	VIN1	22h	in2
  97	VIN2	24h	in4
  114	AVCC	23h	in3
  61	5VSB	50h (bank 5)	in7
  74	VBAT	51h (bank 5)	in8

For other supported devices, you’ll have to take the hard path andlook up the information in the datasheet yourself (and then add itto this document please.)