root@desk-mx8mp:~# dmesg | grep -i ov5640'ov564'[ 2.038286066388] ov5640 1-003c: 1-003c supply DOVDD not found, using dummy regulator[ 2.045672073762] ov5640 1-003c: 1-003c supply AVDD not found, using dummy regulator[ 2.052936081030] ov5640 1-003c: 1-003c supply DVDD not found, using dummy regulator[ 2.067852099859] ov5640 2-003c: 2-003c supply DOVDD not found, using dummy regulator[ 2.075222107251] ov5640 2-003c: 2-003c supply AVDD not found, using dummy regulator[ 2.082488114516] ov5640 2-003c: 2-003c supply DVDD not found, using dummy regulator[ 26.090371110515] ov5640 2mx8-img-003cmd: ov5640_read_regRegistered sensor subdevice: error: reg=300a[ 2.095959] ov5640 2-003c: ov5640_check_chip_id: failed to read chip identifier(1)[ 56.719681122894] mx8-img-md: Registered sensor subdevice: ov5640 1-003c (12)[ 56.752677173873] mx8-img-md: created link [ov5640 1-003c] => [mxc-mipi-csi2.0][ 6.187089] mx8-img-md: created link [ov5640 2-003c] => [mxc-mipi-csi2.1]root@desk-mx8mp:~# ls -la /dev/video1video[1-2]crw-rw---- 1 root video 81, 1 Jan 13 Jun 22 15:17/dev/video1crw-rw---- 1 root video 81, 2 Jun 22 15:25 17 /dev/video1video2