| 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.) |
