Usage: v4l2-dbg [options] [values]
  -D, --info         Show driver info [VIDIOC_QUERYCAP]
  -d, --device <dev> Use device <dev> instead of /dev/video0
                     If <dev> starts with a digit, then /dev/video<dev> is used
  -h, --help         Display this help message
  --verbose          Turn on verbose ioctl error reporting
  -c, --chip <chip>  The chip identifier to use with other commands
                     It can be one of:
                         bridge<num>: bridge chip number <num>
                         bridge (default): same as bridge0
                         subdev<num>: sub-device number <num>
  -l, --list-registers[=min=<addr>[,max=<addr>]]
		     Dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
  -g, --get-register <addr>
		     Get the specified register [VIDIOC_DBG_G_REGISTER]
  -s, --set-register <addr>
		     Set the register with the commandline arguments
                     The register will autoincrement [VIDIOC_DBG_S_REGISTER]
  -n, --scan-chips   Scan the available bridge and subdev chips [VIDIOC_DBG_G_CHIP_INFO]
  -w, --wide <reg length>
		     Sets step between two registers
  --list-symbols     List the symbolic register names you can use, if any
  --log-status       Log the board status in the kernel log [VIDIOC_LOG_STATUS]