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- Kernel driver w83627hf
- ======================
- Supported chips:
- * Winbond W83627HF (ISA accesses ONLY)
- Prefix: 'w83627hf'
- Addresses scanned: ISA address retrieved from Super I/O registers
- * Winbond W83627THF
- Prefix: 'w83627thf'
- Addresses scanned: ISA address retrieved from Super I/O registers
- * Winbond W83697HF
- Prefix: 'w83697hf'
- Addresses scanned: ISA address retrieved from Super I/O registers
- * Winbond W83637HF
- Prefix: 'w83637hf'
- Addresses scanned: ISA address retrieved from Super I/O registers
- * Winbond W83687THF
- Prefix: 'w83687thf'
- Addresses scanned: ISA address retrieved from Super I/O registers
- Datasheet: Provided by Winbond on request(http://www.winbond.com/hq/enu)
- Authors:
- Frodo Looijaard <frodol@dds.nl>,
- Philip Edelbrock <phil@netroedge.com>,
- Mark Studebaker <mdsxyz123@yahoo.com>,
- Bernhard C. Schrenk <clemy@clemy.org>
- Module Parameters
- -----------------
- * force_i2c: int
- Initialize 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 accesses *only* for
- the 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 reliable
- than i2c accesses. Also, for Tyan boards which contain both a
- Super I/O chip and a second i2c-only Winbond chip (often a W83782D),
- using this driver will avoid i2c address conflicts and complex
- initialization 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 method
- now that this ISA driver has been developed.
- The w83627_HF_ uses pins 110-106 as VID0-VID4. The w83627_THF_ uses the
- same pins as GPIO[0:4]. Technically, the w83627_THF_ does not support a
- VID 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 routed
- to these pins despite their not being labeled for that purpose. Therefore,
- the w83627thf driver interprets these as VID. If the VID on your board
- doesn't work, first see doc/vid in the lm_sensors package[1]. If that still
- doesn'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 could
- be 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. This
- module parameter is gone for technical reasons. If you need this feature,
- you can obtain the same result by using the isaset tool (part of
- lm-sensors) before loading the driver:
- # Enter the Super I/O config space
- isaset -y -f 0x2e 0x87
- isaset -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 0x02
- isaset -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, but
- 0x4e/0x4f is also possible.
- Voltage pin mapping
- -------------------
- Here is a summary of the voltage pin mapping for the W83627THF. This
- can be useful to convert data provided by board manufacturers into
- working 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 and
- look up the information in the datasheet yourself (and then add it
- to this document please.)
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