[meta-freescale] mxc_v4l2_capture sometimes not being modprobed

Eric Nelson eric.nelson at boundarydevices.com
Mon Jun 9 10:49:20 PDT 2014


Hi John,

On 06/09/2014 10:35 AM, John Weber wrote:
> Hi Eric,
> 
> On 6/9/14, 12:16 PM, Eric Nelson wrote:
>> Hi all,
>>
>> On 06/09/2014 06:52 AM, Otavio Salvador wrote:
>>> On Mon, Jun 9, 2014 at 10:51 AM, Otavio Salvador
>>> <otavio at ossystems.com.br> wrote:
>>>> On Sun, Jun 8, 2014 at 12:51 PM, John Weber <rjohnweber at gmail.com>
>>>> wrote:
>>>>> On 6/6/14, 6:10 PM, Eric Nelson wrote:
>>>>>> On 06/05/2014 01:33 PM, Eric Nelson wrote:
>>>>>>> On 06/05/2014 01:30 PM, John Weber wrote:
>>>>>>>> <snip>
>>>>>>>>
>>>>>>>> I think you're right, but as far as I know the only other entity
>>>>>>>> that
>>>>>>>> could confirm this would be Boundary Devices.  Eric - do you see
>>>>>>>> this
>>>>>>>> same issue when connecting your camera to Nitrogen6x?
>>>>>>>>
>>>>>>> I've kinda followed this thread, but I'm kinda buried and it will
>>>>>>> take
>>>>>>> a day or two for me to confirm or deny this.
>>>>>>>
>>>>>> I just tested across a dozen assorted reboots/resets/power-cycles
>>>>>> and didn't see the issue with an OV5642 parallel camera and 3.10.17.
>>>>>>
>>>>>> I **don't** have udev-cache configured.
>>>>> I suspect that we will need to disable it on Wandboard as well.
>>>> This is not a good fix.
>>>>
>>>> I added a patch, for OE-Core/Poky, attached; please confirm it fixes
>>>> it.
>> I just tested again on an image with udev-cache, and don't see any
>> issues on a Nitrogen6x board (CSI camera).
>>
>> I'm not sure what's different about my environment.
>>
>> Regards,
>>
>>
>> Eric
>>
> Not sure either, but are you testing with the parallel CSI or MIPI CSI
> camera?  Could there be a difference in the how the drivers are loaded?
> 

I tested using parallel CSI.

AFAIK, the driver load process is the same for both.

Regards,


Eric


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