Yes, I can configure can0 with the sysfs method, and appear to have
communication. I willl also try the canutils.

Thanks to everyone who answered my questions. 



Marc Kleine-Budde wrote:
> 
> On 03/09/2011 08:49 PM, Kurt Van Dijck wrote:
>> On Wed, Mar 09, 2011 at 09:38:55AM -0800, Charles H wrote:
>>>
>>> Charles H wrote:
>>>>
>>>> Hello:
>>>> according th the documentation tha came with my SPEAR 320 demo board I
>>>> should be able to configure the CAN interface thus:
>>>>
>>>> ip link set can0 type can bitrate 125000
>>>> but I get :
>>>> RTNETLINK Answers : operation not supported
>>>> It sounds like the kernel is not configured properly for IPROUTE2
>>>> support
>>>> but I cant find what is missing in the  config. default .config for
>>>> board
>>>> is attached http://old.nabble.com/file/p31101885/spear320_defconfig
>> 
>> I see
>> CONFIG_CAN_DEV_SYSFS=y
>> 
>> CAN configuration is still done via the sysfs.
>> see /sys/class/net/can0/can_bittiming/...
>> I'm not aware how familiar you are with the deprecated
>> sysfs method.
> 
> You can use pengutronix canutils 3.x series:
> 
> http://www.pengutronix.de/software/socket-can/download/canutils/v3.0/canutils-3.0.2.tar.bz2
> 
>       "canconfig can0 bitrate 125000"
> 
> cheers, Marc
> 
> -- 
> Pengutronix e.K.                  | Marc Kleine-Budde           |
> Industrial Linux Solutions        | Phone: +49-231-2826-924     |
> Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
> Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |
> 
> 
>  
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> 
> 

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