From 7f15b66468b7003d5241e352a007e73be5519b20 Mon Sep 17 00:00:00 2001 From: "R.Marek@sh.cvut.cz" Date: Thu, 26 May 2005 12:42:19 +0000 Subject: [PATCH] I2C: documentation update 2/3 This patch adds missing documentation for system health monitoring chips. I would like to thank all people, who helped me with this project. Signed-off-by: Rudolf Marek Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/chips/w83627hf | 66 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 Documentation/i2c/chips/w83627hf (limited to 'Documentation/i2c/chips/w83627hf') diff --git a/Documentation/i2c/chips/w83627hf b/Documentation/i2c/chips/w83627hf new file mode 100644 index 00000000000..78f37c2d602 --- /dev/null +++ b/Documentation/i2c/chips/w83627hf @@ -0,0 +1,66 @@ +Kernel driver w83627hf +====================== + +Supported chips: + * Winbond W83627HF (ISA accesses ONLY) + Prefix: 'w83627hf' + Addresses scanned: ISA address retrieved from Super I/O registers + Datasheet: http://www.winbond.com/PDF/sheet/w83627hf.pdf + * Winbond W83627THF + Prefix: 'w83627thf' + Addresses scanned: ISA address retrieved from Super I/O registers + Datasheet: http://www.winbond.com/PDF/sheet/w83627thf.pdf + * Winbond W83697HF + Prefix: 'w83697hf' + Addresses scanned: ISA address retrieved from Super I/O registers + Datasheet: http://www.winbond.com/PDF/sheet/697hf.pdf + * Winbond W83637HF + Prefix: 'w83637hf' + Addresses scanned: ISA address retrieved from Super I/O registers + Datasheet: http://www.winbond.com/PDF/sheet/w83637hf.pdf + +Authors: + Frodo Looijaard , + Philip Edelbrock , + Mark Studebaker , + Bernhard C. Schrenk + +Module Parameters +----------------- + +* force_addr: int + Initialize the ISA address of the sensors +* 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. + +Technically, the w83627thf does not support a VID reading. However, it's +possible or even likely that your mainboard maker has routed these signals +to a specific set of general purpose IO pins (the Asus P4C800-E is one such +board). The w83627thf driver now interprets these as VID. If the VID on +your board doesn't work, first see doc/vid in the lm_sensors package. If +that still doesn't help, email us at lm-sensors@lm-sensors.org. + +For further information on this driver see the w83781d driver +documentation. + -- cgit v1.2.2