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DM6446 - input video frame rate above 50 hz required

Dear TI community!

I am working with our sensor conected to the video input port. The sensor brings frames at changing (controllable) rate.

The application runs on Linux and is based on the EVM-6446 example - Engine-Codec model.

If I am working with frame rate below 50 Hz it works well.

If I am going above - also the frame size is decreased - I see that input driver frame rate remains - 50 Hz - interval between sequential frames does not go below 20 millis.

Is there any way to solve thie issue?

For information - my inputs and output are driven by external VSYNC (Frame sync) and logic shows that external SW supplies them as desired..