Why my camera in tx2 always 12.496 fps?

Hi,everybody

I have a six LVDS camera designed with TX1 and TX2.The framework is

OV10635-DS90UB913-DS90UB914-TC358748-TX1/TX2.

I wrote my customer driver and it works well in TX1.But I port it in TX2 with some troubles.The frame rate always 12.496 fps.But the real frame rate is 25fps

I catch frames with yavta.Here is some infomation.

23 (7) [-] none 23 1843200 B 83.651676 74.194590 12.496 fps ts mono/EoF
24 (0) [-] none 24 1843200 B 83.731700 74.274616 12.496 fps ts mono/EoF
25 (1) [-] none 25 1843200 B 83.811725 74.354649 12.496 fps ts mono/EoF
26 (2) [-] none 26 1843200 B 83.891750 74.434666 12.496 fps ts mono/EoF
27 (3) [-] none 27 1843200 B 83.971774 74.514693 12.496 fps ts mono/EoF
28 (4) [-] none 28 1843200 B 84.051799 74.594716 12.496 fps ts mono/EoF
29 (5) [-] none 29 1843200 B 84.131823 74.674738 12.496 fps ts mono/EoF
30 (6) [-] none 30 1843200 B 84.211848 74.754771 12.496 fps ts mono/EoF
31 (7) [-] none 31 1843200 B 84.291873 74.834791 12.496 fps ts mono/EoF
32 (0) [-] none 32 1843200 B 84.371897 74.914814 12.496 fps ts mono/EoF
33 (1) [-] none 33 1843200 B 84.451922 74.994836 12.496 fps ts mono/EoF
34 (2) [-] none 34 1843200 B 84.531947 75.074863 12.496 fps ts mono/EoF

Except device tree code,the source code(.c and .h files) is same as TX1.
Could you kindly tell me why the frame rate so strange?

Hi CalmCar,

I have been facing same issue with OV10635. My camera 30fps could work well on TX1 but TX2 could get only 15fps.
I spent more than 1 week but still could not figure out the reason.

It seems the frame rate is half of TX1

Yes correct.
You can refer my topic
https://devtalk.nvidia.com/default/topic/1026128/jetson-tx2/tegra-multimedia-apis-could-get-raw-image-via-v4l2-only-at-15fps/1

Thanks

Hi CalmCar,

I have updated some debug method on forever3000’s post. Please take a look.

Thanks.