hello rico.deng,
please enable v4l2 standard controls to narrow down the issue, this should only access camera streaming.
$ v4l2-ctl -d /dev/video0 --set-fmt-video=width=1920,height=1080,pixelformat=UYVY --set-ctrl bypass_mode=0 --stream-mmap --stream-count=100
in the meanwhile,
please also examine the drivers of your HDMI-MIPI bridge chip; please confirm whether it’s still sending frames while the issue repo’ed.
thanks