Re: omap3isp with DM3730 not working?!

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On Mon, Jul 28, 2014 at 12:29 PM, Laurent Pinchart
<laurent.pinchart@xxxxxxxxxxxxxxxx> wrote:
> Hi Enrico,
>
> On Monday 28 July 2014 10:30:17 Enrico wrote:
>> On Mon, Jul 28, 2014 at 9:20 AM, Sakari Ailus <sakari.ailus@xxxxxx> wrote:
>> > On Thu, Jul 24, 2014 at 05:57:30PM +0200, Enrico wrote:
>> >> On Thu, Jul 24, 2014 at 5:34 PM, Michael Dietschi wrote:
>> >>> Hello,
>> >>>
>> >>> I have built a Poky image for Gumstix Overo and added support for a
>> >>> TVP5151 module like described here http://www.sleepyrobot.com/?p=253.
>> >>> It does work well with an Overo board which hosts an OMAP3530 SoC. But
>> >>> when I try with an Overo hosting a DM3730 it does not work: yavta just
>> >>> seems to wait forever :(
>> >>>
>> >>> I did track it down to the point that IRQ0STATUS_CCDC_VD0_IRQ seems
>> >>> never be set but always IRQ0STATUS_CCDC_VD1_IRQ
>> >
>> > VD1 takes place in 2/3 of the frame, and VD0 in the beginning of the last
>> > line. You could check perhaps if you do get VD0 if you set it to take
>> > place on the previous line (i.e. the register value being height - 3;
>> > please see ccdc_configure() in ispccdc.c).
>> >
>> > I have to admit I haven't used the parallel interface so perhaps others
>> > could have more insightful comments on how to debug this.
>> >
>> >> > Can someone please give me a hint?
>> >>
>> >> It's strange that you get the vd1_irq because it should not be set by
>> >> the driver and never trigger...
>> >
>> > Both VD0 and VD1 are used by the omap3isp driver, but in different points
>> > of the frame.
>>
>> Hi Sakari,
>>
>> that's true in "normal" mode, but with bt656 patches VD1 is not used.
>
> That's not correct, VD1 is used in both modes. In BT.656 mode VD1 is even used
> to increment the frame counter in place of the HS_VS interrupt.

...in your new patches. But sleepyrobot's are the old ones and i bet
Michael is using those patches.

Enrico
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