On Wed, Jan 8, 2014 at 12:55 PM, Julien BERAUD <julien.ber...@parrot.com> wrote:
>
> Le 07/01/2014 11:12, Enrico a écrit :
>
>> On Mon, Jan 6, 2014 at 11:11 AM, Julien BERAUD <julien.ber...@parrot.com>
>> wrote:
>>>
>>> Le 03/01/2014 12:30, Enrico a écrit :
>>>>
>>>> On Wed, Dec 18, 2013 at 11:09 AM, Enrico <ebut...@users.berlios.de>
>>>> wrote:
>>>>>
>>>>> On Tue, Dec 17, 2013 at 2:11 PM, Florian Vaussard
>>>>> <florian.vauss...@epfl.ch> wrote:
>>>>>>
>>>>>> So I converted the iommu to DT (patches just sent), used pdata quirks
>>>>>> for the isp / mtv9032 data, added a few patches from other people
>>>>>> (mainly clk to fix a crash when deferring the omap3isp probe), and a
>>>>>> few
>>>>>> small hacks. I get a 3.13-rc3 (+ board-removal part from Tony
>>>>>> Lindgren)
>>>>>> to boot on DT with a working MT9V032 camera. The missing part is the
>>>>>> DT
>>>>>> binding for the omap3isp, but I guess that we will have to wait a bit
>>>>>> more for this.
>>>>>>
>>>>>> If you want to test, I have a development tree here [1]. Any feedback
>>>>>> is
>>>>>> welcome.
>>>>>>
>>>>>> Cheers,
>>>>>>
>>>>>> Florian
>>>>>>
>>>>>> [1] https://github.com/vaussard/linux/commits/overo-for-3.14/iommu/dt
>>>>>
>>>>> Thanks Florian,
>>>>>
>>>>> i will report what i get with my setup.
>>>>
>>>> And here i am.
>>>>
>>>> I can confirm it works, video source is tvp5150 (with platform data in
>>>> pdata-quirks.c) in bt656 mode.
>>>>
>>>> Laurent, i used the two bt656 patches from your omap3isp/bt656 tree so
>>>> if you want to push it you can add a Tested-by me.
>>>>
>>>> There is only one problem, but it's unrelated to your DT work.
>>>>
>>>> It's an old problem (see for example [1] and [2]), seen by other
>>>> people too and it seems it's still there.
>>>> Basically if i capture with yavta while the system is idle then it
>>>> just waits without getting any frame.
>>>> If i add some cpu load (usually i do a "cat /dev/zero" in a ssh
>>>> terminal) it starts capturing correctly.
>>>>
>>>> The strange thing is that i do get isp interrupts in the idle case, so
>>>> i don't know why they don't "propagate" to yavta.
>>>>
>>>> Any hints on how to debug this?
>>>>
>>>> Enrico
>>>>
>>>> [1]: https://linuxtv.org/patch/7836/
>>>> [2]:
>>>> https://www.mail-archive.com/linux-media@vger.kernel.org/msg44923.html
>>>
>>> I have had what looked a lot like these problems before and it was due to
>>> a
>>> wrong configuration of the ccdc cropping regarding to the blanking. Could
>>> you send me the configuration of the pipeline that you apply with
>>> media-ctl,
>>> just in case this is the same problem.
>>
>> i'm using:
>>
>> media-ctl -r -l '"tvp5150 2-005c":0->"OMAP3 ISP CCDC":0[1], "OMAP3 ISP
>> CCDC":1->"OMAP3 ISP CCDC output":0[1]'
>> media-ctl --set-format '"tvp5150 2-005c":0 [UYVY 720x625]'
>>
>> And then capture with yavta -s 720x625 (or 720x576, can't remember right
>> now).
>>
>> Thanks,
>>
>> Enrico
>
> I don't think this is sufficient, though I am no expert about omap3 isp, you
> should configure the format of the ccdc input and of the ccdc output too.
> When I had this problem, it was solved by adding cropping at the input of
> the CCDC, corresponding to the blanking period, which was :
> - media-ctl -v -f '"OMAP3 ISP CCDC":0 [UYVY2X8 720x576 (0,49/720x576)]'
> or
> - media-ctl -v -f '"OMAP3 ISP CCDC":0 [UYVY2X8 720x480 (0,45/720x480)]'
> respectively.
>
> I don't know if this can be of any help.
>
> Regards,
> Julien BERAUD
It seems i can't set cropping at the CCDC input (sink), but i can on
output (source):
- entity 5: OMAP3 ISP CCDC (3 pads, 9 links)
type V4L2 subdev subtype Unknown flags 0
device node name /dev/v4l-subdev2
pad0: Sink
[fmt:UYVY2X8/720x625]
<- "OMAP3 ISP CCP2":1 []
<- "OMAP3 ISP CSI2a":1 []
<- "tvp5150 1-005c":0 [ENABLED]
pad1: Source
[fmt:UYVY2X8/720x576
crop.bounds:(0,0)/720x624
crop:(0,48)/720x576]
-> "OMAP3 ISP CCDC output":0 [ENABLED]
-> "OMAP3 ISP resizer":0 []
pad2: Source
[fmt:unknown/720x624]
-> "OMAP3 ISP preview":0 []
-> "OMAP3 ISP AEWB":0 [ENABLED,IMMUTABLE]
-> "OMAP3 ISP AF":0 [ENABLED,IMMUTABLE]
-> "OMAP3 ISP histogram":0 [ENABLED,IMMUTABLE]
The strange thing is that with these settings the situation is even
worse, i don't get any frames in yavta (while i see interrupts on
omap3isp) even with the "cat /dev/zero" trick.
So you are right, playing with cropping can make it work or not, are
you sure you could set cropping at the ccdc input?
Enrico
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