Hello everyone,
 
	 
 
	I am new to this so please forgive my eventual mistake. 
	I have a Rock 4 SE with Armbian Linux 6.12.13-current-rockchip64 (bookworm) for Rockpi 4B (because there is not a special version for SE it re-commanded to use 4B).
 
	 
 
	And I try to use the CSI port to connect a Camera Raspberry Pi V2.1.
 
	 
 
	And I does not work, I have tried to add different value to the overlay in /boot/armbianEnv.txt like overlays=rockchip-csi csi or imx219 
	with a reboot each time, but it doesn't seem to work. Looking around, it seems like there is a lot of issue with csi camera and rock 4 with armbian (and sometime other os). 
	But none seems to have an answer, but because these are old, 4 to 6 years old, maybe there is an answer now. 
	 
	Looking closely to the overlay, it seems there is no CSI related file in boot/dtb/rockchip/overlay/ it seems possible to maybe create one, but out of my skill right now.
 
	So I am desperate for help, if someone can help making this camera work, I would be great full.
 
	 
 
	Running "v4l2-ctl --list-devices" give :  
	rockchip,rk3399-vpu-enc (platform:ff650000.video-codec): 
	    /dev/video1 
	    /dev/video2 
	    /dev/media0
 
	rockchip-rga (platform:rga): 
	    /dev/video0
 
	rkvdec (platform:rkvdec): 
	    /dev/video3 
	    /dev/media1 
	 
	My overaly :
 
	overlay_prefix=rockchip 
	overlays=rk3399-v4l2-video imx219 csi 
	 
	I have try with "," instead of space for overlay value.