tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1Kernel 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
21 * Winbond W83687THF
22 Prefix: 'w83687thf'
23 Addresses scanned: ISA address retrieved from Super I/O registers
24 Datasheet: Provided by Winbond on request
25
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.
43
44Description
45-----------
46
47This driver implements support for ISA accesses *only* for
48the Winbond W83627HF, W83627THF, W83697HF and W83637HF Super I/O chips.
49We will refer to them collectively as Winbond chips.
50
51This driver supports ISA accesses, which should be more reliable
52than i2c accesses. Also, for Tyan boards which contain both a
53Super I/O chip and a second i2c-only Winbond chip (often a W83782D),
54using this driver will avoid i2c address conflicts and complex
55initialization that were required in the w83781d driver.
56
57If you really want i2c accesses for these Super I/O chips,
58use the w83781d driver. However this is not the preferred method
59now that this ISA driver has been developed.
60
61The w83627_HF_ uses pins 110-106 as VID0-VID4. The w83627_THF_ uses the
62same pins as GPIO[0:4]. Technically, the w83627_THF_ does not support a
63VID reading. However the two chips have the identical 128 pin package. So,
64it is possible or even likely for a w83627thf to have the VID signals routed
65to these pins despite their not being labeled for that purpose. Therefore,
66the w83627thf driver interprets these as VID. If the VID on your board
67doesn't work, first see doc/vid in the lm_sensors package[1]. If that still
68doesn't help, you may just ignore the bogus VID reading with no harm done.
69
70For further information on this driver see the w83781d driver documentation.
71
72[1] http://www.lm-sensors.org/browser/lm-sensors/trunk/doc/vid