Re: Linux MPC8xx I2C Interface

In message [ref] you wrote:

I am working on a proprietary board which I have
U-Boot and ELDK Linux ported over to.  On the board
there is an I2C bus that first connects to a PCA9556
(I2C Hub Controller at 0x18) & PCA9516 (I2C Octal
Hub).  So I need to be able to talk to the PCA9556 to
set up the hub controller to activate one of the bus
segments on the hub.  I am able to read and write to
all my I2C devices under U-Boot, but not under Linux.
I have tried both compiling, and creating modules of
i2c-core, i2c-dev, and i2c-algo-8xx.  I also patched
the kernel with the i2c patch which also gave me
i2c-proc.  I don't get any errors when I boot with
them compiled into the kernel, or when I insert them
as modules.  However, I don't see any devices.  What
am I doing wrong?  Also, I would rather talk to the

Which kernel tree is this? Did you by any chance  tried  the  sources
from our CVS server?

Best regards,

Wolfgang Denk

--
See us @ Embedded World, Nuremberg, Feb 17 - 19,  Hall 12.0 Booth 440
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
A conservative is a man with two perfectly good legs  who  has  never
learned to walk.                              - Franklin D. Roosevelt

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/