Re: Dual SJA1000 can controllers on SMP system.

[Wolfgang Grandegger <wg@grandegger.com>]

On 06/16/2013 01:20 PM, mirza@hostmobility.com wrote:
> 
> 
> -------- Ursprungligt meddelande --------
>> Från: Wolfgang Grandegger <wg@grandegger.com>
>> Skickat: den 16 juni 2013 11:19
>> Till: Mirza Krak <mirza.krak@hostmobility.com>
>> Ämne: Re: Dual SJA1000 can controllers on SMP system.
>>
>> On 06/13/2013 02:47 PM, Mirza Krak wrote:
>>> Dear Sirs.
>>>
>>> I am running a 3.1.10 kernel on Nvidia Tegra 2 CPU (Dual Core). Not
>>> vanilla kernel (Linux4Tegra).
>>>
>>> We are using dual can controllers connected on th external data bus on
>>> our custom hardware. The can controllers are SJA1000.
>>
>> What external data bus is the CAN controller connected to?
>> And which CAN controller board/card?
> 
> As I mentioned the CAN controllers are SJA1000 and the SJA1000 chip is integrated in our board. No external card/board for SJA1000 chip.
> 
> It is connected to the Nvidia Tegra 2 externa data bus (a.k.a SNOR). 
> 
>>> Driver that is used is vanilla sja1000 driver (sja1000.c)
>>
>> Which bus driver is used and how do you load the module?
> 
> The bus driver is tegra_snor and is linked in statically in the kernel.  

The low-level device initialization and access is not done in sja1000.c
but by another driver module, e.g., sja1000_isa, sja1000_platform,
ems_pci.c. What module are you using? What functions are you using to
access the SNOR bus?

Wolfgang.