Hi, On Mon, 17 Jun 2024 13:30:52 +0200, Sebastian Reichel wrote: >> rk3568_vpu_variant is decoder's data, typo? > >See first sentence of the commit message. I know you want a different compatible string for this VEPU121 beacause of multi cores. But rk3568_vpu_variant is data for VDPU121. I applied this patch and from output of command: v4l2-ctl -l -d 3 I see h264/vp8 decoder, which is wrong. vtl2-ctl output of this device should be JPEG endoer. Best regards, Jianfeng