i.MX6Q SabreSD 미디어 그래프

OV5640 MIPI CSI-2 입력과 네 CSI 분기

이 DOT 그래프는 SabreSD 보드의 i.MX6Q V4L2 미디어 토폴로지를 위에서 아래로 배치합니다. 녹색 Mrecord는 포트가 있는 서브디바이스이고 노란 상자는 /dev/video 캡처 노드입니다. 모든 간선은 style=dashed이므로 그래프를 추출한 시점에 비활성화된 선택 가능 링크를 나타냅니다.

두 IPU는 같은 내부 구조를 가집니다. 각 IPU의 CSI0·CSI1은 포트 2에서 직접 캡처 장치로 나가고, 포트 1에서 전처리기 `ic_prp` 또는 디인터레이서 `vdic`로 갈 수 있습니다. `vdic` 출력도 `ic_prp`로 합류하므로 순차 주사 영상은 직접, 인터레이스 영상은 디인터레이스 뒤 같은 전처리 경로를 사용할 수 있습니다.

각 `ic_prp`는 포트 1의 `ic_prpenc` 인코딩 경로와 포트 2의 `ic_prpvf` 뷰파인더 경로로 분기합니다. 두 분기는 각각 별도 `/dev/video` 캡처 노드에 도달합니다. IPU1은 `/dev/video0`부터 `/dev/video3`, IPU2는 `/dev/video4`부터 `/dev/video7`을 제공합니다.

SabreSD 고유 입력은 카메라 센서 `ov5640 1-003c`(`/dev/v4l-subdev15`)입니다. 센서 포트 0은 `imx6-mipi-csi2`(`/dev/v4l-subdev12`) 입력 포트 0에 연결됩니다. MIPI CSI-2 수신기는 네 출력 포트를 통해 IPU1 CSI0·CSI1과 IPU2 CSI0·CSI1에 도달할 수 있도록 분기합니다.

MIPI 포트 1은 `ipu1_csi0_mux`(`/dev/v4l-subdev13`) 포트 0으로 들어가 mux 포트 2에서 `ipu1_csi0` 포트 0으로 나갑니다. 포트 2는 `ipu1_csi1` 포트 0에 직접 연결됩니다. 포트 3은 `ipu2_csi0` 포트 0에 직접 연결되고, 포트 4는 `ipu2_csi1_mux`(`/dev/v4l-subdev14`) 포트 0을 거쳐 `ipu2_csi1` 포트 0으로 이어집니다.

digraph board {
        rankdir=TB
        n00000001 [label="{{<port0> 0} | ipu1_csi0\n/dev/v4l-subdev0 | {<port1> 1 | <port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n00000001:port2 -> n00000005 [style=dashed]
        n00000001:port1 -> n0000000f:port0 [style=dashed]
        n00000001:port1 -> n0000000b:port0 [style=dashed]
        n00000005 [label="ipu1_csi0 capture\n/dev/video0", shape=box, style=filled, fillcolor=yellow]
        n0000000b [label="{{<port0> 0 | <port1> 1} | ipu1_vdic\n/dev/v4l-subdev1 | {<port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n0000000b:port2 -> n0000000f:port0 [style=dashed]
        n0000000f [label="{{<port0> 0} | ipu1_ic_prp\n/dev/v4l-subdev2 | {<port1> 1 | <port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n0000000f:port1 -> n00000013:port0 [style=dashed]
        n0000000f:port2 -> n0000001c:port0 [style=dashed]
        n00000013 [label="{{<port0> 0} | ipu1_ic_prpenc\n/dev/v4l-subdev3 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
        n00000013:port1 -> n00000016 [style=dashed]
        n00000016 [label="ipu1_ic_prpenc capture\n/dev/video1", shape=box, style=filled, fillcolor=yellow]
        n0000001c [label="{{<port0> 0} | ipu1_ic_prpvf\n/dev/v4l-subdev4 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
        n0000001c:port1 -> n0000001f [style=dashed]
        n0000001f [label="ipu1_ic_prpvf capture\n/dev/video2", shape=box, style=filled, fillcolor=yellow]
        n0000002f [label="{{<port0> 0} | ipu1_csi1\n/dev/v4l-subdev5 | {<port1> 1 | <port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n0000002f:port2 -> n00000033 [style=dashed]
        n0000002f:port1 -> n0000000f:port0 [style=dashed]
        n0000002f:port1 -> n0000000b:port0 [style=dashed]
        n00000033 [label="ipu1_csi1 capture\n/dev/video3", shape=box, style=filled, fillcolor=yellow]
        n0000003d [label="{{<port0> 0} | ipu2_csi0\n/dev/v4l-subdev6 | {<port1> 1 | <port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n0000003d:port2 -> n00000041 [style=dashed]
        n0000003d:port1 -> n0000004b:port0 [style=dashed]
        n0000003d:port1 -> n00000047:port0 [style=dashed]
        n00000041 [label="ipu2_csi0 capture\n/dev/video4", shape=box, style=filled, fillcolor=yellow]
        n00000047 [label="{{<port0> 0 | <port1> 1} | ipu2_vdic\n/dev/v4l-subdev7 | {<port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n00000047:port2 -> n0000004b:port0 [style=dashed]
        n0000004b [label="{{<port0> 0} | ipu2_ic_prp\n/dev/v4l-subdev8 | {<port1> 1 | <port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n0000004b:port1 -> n0000004f:port0 [style=dashed]
        n0000004b:port2 -> n00000058:port0 [style=dashed]
        n0000004f [label="{{<port0> 0} | ipu2_ic_prpenc\n/dev/v4l-subdev9 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
        n0000004f:port1 -> n00000052 [style=dashed]
        n00000052 [label="ipu2_ic_prpenc capture\n/dev/video5", shape=box, style=filled, fillcolor=yellow]
        n00000058 [label="{{<port0> 0} | ipu2_ic_prpvf\n/dev/v4l-subdev10 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
        n00000058:port1 -> n0000005b [style=dashed]
        n0000005b [label="ipu2_ic_prpvf capture\n/dev/video6", shape=box, style=filled, fillcolor=yellow]
        n0000006b [label="{{<port0> 0} | ipu2_csi1\n/dev/v4l-subdev11 | {<port1> 1 | <port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n0000006b:port2 -> n0000006f [style=dashed]
        n0000006b:port1 -> n0000004b:port0 [style=dashed]
        n0000006b:port1 -> n00000047:port0 [style=dashed]
        n0000006f [label="ipu2_csi1 capture\n/dev/video7", shape=box, style=filled, fillcolor=yellow]
        n00000079 [label="{{<port0> 0} | imx6-mipi-csi2\n/dev/v4l-subdev12 | {<port1> 1 | <port2> 2 | <port3> 3 | <port4> 4}}", shape=Mrecord, style=filled, fillcolor=green]
        n00000079:port2 -> n0000002f:port0 [style=dashed]
        n00000079:port3 -> n0000003d:port0 [style=dashed]
        n00000079:port1 -> n0000007f:port0 [style=dashed]
        n00000079:port4 -> n00000083:port0 [style=dashed]
        n0000007f [label="{{<port0> 0 | <port1> 1} | ipu1_csi0_mux\n/dev/v4l-subdev13 | {<port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n0000007f:port2 -> n00000001:port0 [style=dashed]
        n00000083 [label="{{<port0> 0 | <port1> 1} | ipu2_csi1_mux\n/dev/v4l-subdev14 | {<port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
        n00000083:port2 -> n0000006b:port0 [style=dashed]
        n00000087 [label="{{} | ov5640 1-003c\n/dev/v4l-subdev15 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
        n00000087:port0 -> n00000079:port0 [style=dashed]
}