From mboxrd@z Thu Jan  1 00:00:00 1970
From: stefan.schick@business-consulting.de (Stefan Schick)
Date: Fri, 11 Nov 2011 11:48:35 +0100
Subject: Pin configuration
Message-ID: <4EBCFD83.2040402@business-consulting.de>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

Hey,

I am currently working on a TDM3730 in combination with a Blizzard Base 
board (http://denx-cs.de/?q=tdm3730). It is my goal to connect a CAN-Bus 
and get it up and running. As driver we use the SJA1000 OF platform 
which is already in my Kernel. For that we have to build a little custom 
board with the SJA1000 Chip and attach it to the GPIO's or in our case 
the GPMC's.
The Pin configuration is stored in the u-boot source at 
"u-boot.git/board/technexion/tdm3730". I also found the code to override 
the Pin configuration in the architecture specific code in the Kernel.

What I don't get is what happens between the Architecture specific Pin 
configuration and the SJA1000 Driver. How does the Driver know which 
Pins to use?

Regards,
Stefan