[meta-freescale] mxc_v4l2_capture sometimes not being modprobed

[John Weber]

Hi Eric,

On 6/9/14, 12:49 PM, Eric Nelson wrote:
> 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
OK.  I don't think our environments are very different, so I suspect that it 
might be one of the few kernel enhancements that you've made.

BTW - did you disable udev-cache by default?  If so where did you do this in Yocto?

John