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124 lines
4.2 KiB
124 lines
4.2 KiB
Kernel driver w83627hf |
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====================== |
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Supported chips: |
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* Winbond W83627HF (ISA accesses ONLY) |
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Prefix: 'w83627hf' |
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Addresses scanned: ISA address retrieved from Super I/O registers |
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* Winbond W83627THF |
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Prefix: 'w83627thf' |
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Addresses scanned: ISA address retrieved from Super I/O registers |
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* Winbond W83697HF |
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Prefix: 'w83697hf' |
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Addresses scanned: ISA address retrieved from Super I/O registers |
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* Winbond W83637HF |
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Prefix: 'w83637hf' |
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Addresses scanned: ISA address retrieved from Super I/O registers |
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* Winbond W83687THF |
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Prefix: 'w83687thf' |
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Addresses scanned: ISA address retrieved from Super I/O registers |
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Datasheet: Provided by Winbond on request(http://www.winbond.com/hq/enu) |
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Authors: |
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Frodo Looijaard <[email protected]>, |
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Philip Edelbrock <[email protected]>, |
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Mark Studebaker <[email protected]>, |
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Bernhard C. Schrenk <[email protected]> |
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Module Parameters |
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----------------- |
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* force_i2c: int |
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Initialize the I2C address of the sensors |
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* init: int |
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(default is 1) |
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Use 'init=0' to bypass initializing the chip. |
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Try this if your computer crashes when you load the module. |
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Description |
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----------- |
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This driver implements support for ISA accesses *only* for |
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the Winbond W83627HF, W83627THF, W83697HF and W83637HF Super I/O chips. |
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We will refer to them collectively as Winbond chips. |
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This driver supports ISA accesses, which should be more reliable |
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than i2c accesses. Also, for Tyan boards which contain both a |
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Super I/O chip and a second i2c-only Winbond chip (often a W83782D), |
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using this driver will avoid i2c address conflicts and complex |
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initialization that were required in the w83781d driver. |
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If you really want i2c accesses for these Super I/O chips, |
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use the w83781d driver. However this is not the preferred method |
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now that this ISA driver has been developed. |
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The `w83627_HF_` uses pins 110-106 as VID0-VID4. The `w83627_THF_` uses the |
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same pins as GPIO[0:4]. Technically, the `w83627_THF_` does not support a |
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VID reading. However the two chips have the identical 128 pin package. So, |
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it is possible or even likely for a w83627thf to have the VID signals routed |
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to these pins despite their not being labeled for that purpose. Therefore, |
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the w83627thf driver interprets these as VID. If the VID on your board |
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doesn't work, first see doc/vid in the lm_sensors package[1]. If that still |
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doesn't help, you may just ignore the bogus VID reading with no harm done. |
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For further information on this driver see the w83781d driver documentation. |
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[1] http://www.lm-sensors.org/browser/lm-sensors/trunk/doc/vid |
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Forcing the address |
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------------------- |
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The driver used to have a module parameter named force_addr, which could |
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be used to force the base I/O address of the hardware monitoring block. |
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This was meant as a workaround for mainboards with a broken BIOS. This |
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module parameter is gone for technical reasons. If you need this feature, |
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you can obtain the same result by using the isaset tool (part of |
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lm-sensors) before loading the driver: |
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# Enter the Super I/O config space:: |
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isaset -y -f 0x2e 0x87 |
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isaset -y -f 0x2e 0x87 |
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# Select the hwmon logical device:: |
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isaset -y 0x2e 0x2f 0x07 0x0b |
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# Set the base I/O address (to 0x290 in this example):: |
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isaset -y 0x2e 0x2f 0x60 0x02 |
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isaset -y 0x2e 0x2f 0x61 0x90 |
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# Exit the Super-I/O config space:: |
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isaset -y -f 0x2e 0xaa |
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The above sequence assumes a Super-I/O config space at 0x2e/0x2f, but |
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0x4e/0x4f is also possible. |
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Voltage pin mapping |
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------------------- |
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Here is a summary of the voltage pin mapping for the W83627THF. This |
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can be useful to convert data provided by board manufacturers into |
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working libsensors configuration statements: |
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- W83627THF |
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======== =============== =============== =============== |
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Pin Name Register Sysfs attribute |
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======== =============== =============== =============== |
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100 CPUVCORE 20h in0 |
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99 VIN0 21h in1 |
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98 VIN1 22h in2 |
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97 VIN2 24h in4 |
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114 AVCC 23h in3 |
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61 5VSB 50h (bank 5) in7 |
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74 VBAT 51h (bank 5) in8 |
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======== =============== =============== =============== |
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For other supported devices, you'll have to take the hard path and |
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look up the information in the datasheet yourself (and then add it |
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to this document please.)
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