Hi Hugues,

On Tue, May 15, 2018 at 01:33:55PM +0000, Hugues FRUCHET wrote:
> I've taken the whole serie and made some tests on STM32 platform using 
> DVP parallel interface.
> Now JPEG is OK and I've not seen any regressions appart on framerate 
> control linked to this current patchset.

Thanks a lot for your feedback, I've (hopefully) fixed all the issues
you reported here, most of the time taking your fix directly, except
for 2 where I reworked the code instead.

> Here are issues observed around framerate control:
> 1) Framerate enumeration is buggy and all resolutions are claimed 
> supporting 15/30/60:
> v4l2-ctl --list-formats-ext
> ioctl: VIDIOC_ENUM_FMT
>          Index       : 0
>          Type        : Video Capture
>          Pixel Format: 'JPEG' (compressed)
>          Name        : JFIF JPEG
>                  Size: Discrete 176x144
>                          Interval: Discrete 0.067s (15.000 fps)
>                          Interval: Discrete 0.033s (30.000 fps)
>                          Interval: Discrete 0.017s (60.000 fps)

One small question though, I don't seem to have that output for
v4l2-ctl, is some hook needed in the v4l2 device for it to work?

Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com