On 04/16/10 09:25, Stefan Herbrechtsmeier wrote:
> Hi,
>
> I have updated my ov9655 driver to kernel 2.6.33 and
> did some test regarding the image shift problem on pxa.
> (http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/10773/focus=11810)
>
>
> - The image was shifted 32 pixels (64 bytes) to the right
> or rather the first 32 pixels belongs to the previous image.
> - The image was only shifted on the first capture after reset.
> It doesn't matter whether I previous change the resolution with v4l2-ctl.
> - On big images (1280 x 1024) the shift disappears after some images,
> but not on small images (320 x 240).
>
> It looks like the FIFO was not cleared at start capture.
>
Sounds reasonable. Similar problem seen with ov7670 attached to pxa271.
I've never taken the time to try and track it down.
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