Thanks for all your help.
I could get an output for 8-bit with the IMX219 ISP Tuning-binaries from processor-sdk/imaging - Unnamed repository; edit this file 'description' to name the repository. . This is the version matching to the Processor SDK in the last image I mentioned above. It does not have the binaries for 10-bit included, like newer versions.
curl -O https://git.ti.com/cgit/processor-sdk/imaging/snapshot/imaging-REL.PSDK.JACINTO.08.02.00.02.zip
sudo unzip imaging-REL.PSDK.JACINTO.08.02.00.02.zip -d /opt/
You have to start the init-script to set up the camera to SRGGB8_1X8/1920x1080, because it is automatically set up for SRGGB10_1X10/3280x2464 right after starting the image with the the overlays mentioned in my other posts above:
sudo /opt/edge_ai_apps/init_script.sh
If you unpacked the SDK imaging folder like me, you could get an Gstreamer-Output with this command:
sudo gst-launch-1.0 v4l2src device=/dev/video2 ! video/x-bayer, width=1920, height=1080, format=rggb ! tiovxisp sink_0::device=/dev/v4l-subdev2 sensor-name=SENSOR_SONY_IMX219_RPI dcc-isp-file=/opt/imaging-REL.PSDK.JACINTO.08.02.00.02/sensor_drv/src/imx219/dcc_bins/dcc_viss.bin sink_0::dcc-2a-file=/opt/imaging-REL.PSDK.JACINTO.08.02.00.02/sensor_drv/src/imx219/dcc_bins/dcc_2a.bin format-msb=7 ! autovideosink