Comment 32 for bug 1921345

> From kernel's point of view, there is still a known issue that it takes
> root priviledge to access these devices.

There is a way to run the gstreamer plugin as normal user via udev rule:
https://github.com/intel/icamerasrc/pull/9

The IPU6 processing subsystem does not use a V4l2 device node in contrast to the Input system.
Therefore it is required to fix the access permission to `/dev/ipu-psys0`.