Le 03/01/2014 12:30, Enrico a écrit :
On Wed, Dec 18, 2013 at 11:09 AM, Enrico <ebutera@xxxxxxxxxxxxxxxx> wrote:
On Tue, Dec 17, 2013 at 2:11 PM, Florian Vaussard
<florian.vaussard@xxxxxxx> 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@xxxxxxxxxxxxxxx/msg44923.html
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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.
Regards,
Julien BERAUD
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