digraph board {
        rankdir=TB
        n00000001 [label="{{<port0> 0} | rkcif-dvp0\n/dev/v4l-subdev0 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
        n00000001:port1 -> n00000004
        n00000004 [label="rkcif-dvp0-id0\n/dev/video0", shape=box, style=filled, fillcolor=yellow]
        n00000025 [label="{{} | it6801 2-0048\n/dev/v4l-subdev1 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
        n00000025:port0 -> n00000001:port0
}