What is the maximum frame rate I can expect for 1080p60 on the CSI2 interface using gstreamer with output to an X window? I can only get up to about 40fps when using the following gstreamer pipeline (on our custom board):
gst-launch-1.0 -v v4l2src ! 'video/x-raw,format=UYVY' ! fpsdisplaysink video-sink=xvimagesink
It is even less (around 23fps) with the nveglglessink. If I use io-mode=3 with v4l2src I can get 60fps but I was informed that io-mode=3 is not supported on the TK1 (and the display is corrupted). That at least proves that the CSI2 interface is keeping up. The bottleneck must be happening in the gstreamer pipeline somewhere.