hello,
I'm testing v4l2 API on i.mx8mm mini evk board.
mipi-csi spec is 1200Mbps, 4lane.
when I set resoultion 1280x960, ideal max frame rate is 180fps
cal fps = date rate * lane / (cycle/pix * overhead * bit * width * height) = 1200Mx4/(2*1.35*8*1280*960)
but I'm using 75%, 135fps without no frame drop (tested getting 50,000 frame)
so if I set resolution 400x300, ideal max frame rate is 1851fps and expecting result is 75%, 1388fps
but some reason I should set 300fps because if I set more fps, frame drop happened.
Is this limitation of v4l2 API? (I guess because of copying frame to application..)
or do I have any things to try ?
help me
thank you
