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R.Marek@sh.cvut.cz7f15b662005-05-26 12:42:19 +00001Kernel driver w83627hf
2======================
3
4Supported chips:
5 * Winbond W83627HF (ISA accesses ONLY)
6 Prefix: 'w83627hf'
7 Addresses scanned: ISA address retrieved from Super I/O registers
8 Datasheet: http://www.winbond.com/PDF/sheet/w83627hf.pdf
9 * Winbond W83627THF
10 Prefix: 'w83627thf'
11 Addresses scanned: ISA address retrieved from Super I/O registers
12 Datasheet: http://www.winbond.com/PDF/sheet/w83627thf.pdf
13 * Winbond W83697HF
14 Prefix: 'w83697hf'
15 Addresses scanned: ISA address retrieved from Super I/O registers
16 Datasheet: http://www.winbond.com/PDF/sheet/697hf.pdf
17 * Winbond W83637HF
18 Prefix: 'w83637hf'
19 Addresses scanned: ISA address retrieved from Super I/O registers
20 Datasheet: http://www.winbond.com/PDF/sheet/w83637hf.pdf
Jean Delvarec2db6ce2006-01-18 23:22:12 +010021 * Winbond W83687THF
22 Prefix: 'w83687thf'
23 Addresses scanned: ISA address retrieved from Super I/O registers
24 Datasheet: Provided by Winbond on request
R.Marek@sh.cvut.cz7f15b662005-05-26 12:42:19 +000025
26Authors:
27 Frodo Looijaard <frodol@dds.nl>,
28 Philip Edelbrock <phil@netroedge.com>,
29 Mark Studebaker <mdsxyz123@yahoo.com>,
30 Bernhard C. Schrenk <clemy@clemy.org>
31
32Module Parameters
33-----------------
34
35* force_addr: int
36 Initialize the ISA address of the sensors
37* force_i2c: int
38 Initialize the I2C address of the sensors
39* init: int
40 (default is 1)
41 Use 'init=0' to bypass initializing the chip.
42 Try this if your computer crashes when you load the module.
Jean Delvarea40f0b02006-02-05 23:17:34 +010043* reset: int
44 (default is 0)
45 The driver used to reset the chip on load, but does no more. Use
46 'reset=1' to restore the old behavior. Report if you need to do this.
R.Marek@sh.cvut.cz7f15b662005-05-26 12:42:19 +000047
48Description
49-----------
50
51This driver implements support for ISA accesses *only* for
52the Winbond W83627HF, W83627THF, W83697HF and W83637HF Super I/O chips.
53We will refer to them collectively as Winbond chips.
54
55This driver supports ISA accesses, which should be more reliable
56than i2c accesses. Also, for Tyan boards which contain both a
57Super I/O chip and a second i2c-only Winbond chip (often a W83782D),
58using this driver will avoid i2c address conflicts and complex
59initialization that were required in the w83781d driver.
60
61If you really want i2c accesses for these Super I/O chips,
62use the w83781d driver. However this is not the preferred method
63now that this ISA driver has been developed.
64
Mark M. Hoffman5b319402005-11-26 20:10:56 +010065The w83627_HF_ uses pins 110-106 as VID0-VID4. The w83627_THF_ uses the
66same pins as GPIO[0:4]. Technically, the w83627_THF_ does not support a
67VID reading. However the two chips have the identical 128 pin package. So,
68it is possible or even likely for a w83627thf to have the VID signals routed
69to these pins despite their not being labeled for that purpose. Therefore,
70the w83627thf driver interprets these as VID. If the VID on your board
71doesn't work, first see doc/vid in the lm_sensors package[1]. If that still
72doesn't help, you may just ignore the bogus VID reading with no harm done.
R.Marek@sh.cvut.cz7f15b662005-05-26 12:42:19 +000073
Mark M. Hoffman5b319402005-11-26 20:10:56 +010074For further information on this driver see the w83781d driver documentation.
75
Jean Delvareec1d86c2007-11-18 23:46:10 +010076[1] http://www.lm-sensors.org/browser/lm-sensors/trunk/doc/vid