OV5647 Framerate control

Hi everybody,

It is been two days, I’m trying to control the framerate of the OV5647 camera. I am only getting 15.63 fps no matter what resolution I set on the camera. According to the spec, I should be able to get around 30fps at 1080p.
I am using GStreamer to get the video stream.
Example of gstreamer input :
“gst-launch-1-0 v4l2src device=/dev/video0 ! video/x-raw,format=NV12,width=1080,height=720,framerate=30/1 ! fpsdisplaysink”
Do you guys have any advice on how to control the framerate?

Thank you very much for your answers!