[deliverable/linux.git] / Documentation / i2c / busses / i2c-via

Kernel driver i2c-via

Supported adapters:
  * VIA Technologies, InC. VT82C586B
    Datasheet: Publicly available at the VIA website

Author: Kyösti Mälkki <kmalkki@cc.hut.fi>

Description
-----------

i2c-via is an i2c bus driver for motherboards with VIA chipset.

The following VIA pci chipsets are supported:
 - MVP3, VP3, VP2/97, VPX/97 
 - others with South bridge VT82C586B

Your lspci listing must show this :

 Bridge: VIA Technologies, Inc. VT82C586B ACPI (rev 10)

    Problems?
 
 Q: You have VT82C586B on the motherboard, but not in the listing. 
 
 A: Go to your BIOS setup, section PCI devices or similar.
    Turn USB support on, and try again. 

 Q: No error messages, but still i2c doesn't seem to work.

 A: This can happen. This driver uses the pins VIA recommends in their
    datasheets, but there are several ways the motherboard manufacturer
    can actually wire the lines.
Commit	Line	Data
1da177e4 LT	1	Kernel driver i2c-via
	2
	3	Supported adapters:
	4	* VIA Technologies, InC. VT82C586B
	5	Datasheet: Publicly available at the VIA website
	6
be2a608b	7	Author: Kyösti Mälkki <kmalkki@cc.hut.fi>
1da177e4 LT	8
	9	Description
	10	-----------
	11
	12	i2c-via is an i2c bus driver for motherboards with VIA chipset.
	13
	14	The following VIA pci chipsets are supported:
	15	- MVP3, VP3, VP2/97, VPX/97
	16	- others with South bridge VT82C586B
	17
	18	Your lspci listing must show this :
	19
	20	Bridge: VIA Technologies, Inc. VT82C586B ACPI (rev 10)
	21
	22	Problems?
	23
	24	Q: You have VT82C586B on the motherboard, but not in the listing.
	25
	26	A: Go to your BIOS setup, section PCI devices or similar.
	27	Turn USB support on, and try again.
	28
	29	Q: No error messages, but still i2c doesn't seem to work.
	30
	31	A: This can happen. This driver uses the pins VIA recommends in their
	32	datasheets, but there are several ways the motherboard manufacturer
	33	can actually wire the lines.
	34