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Robotics & Edge Computing Jetson Systems Jetson TX2
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6

Hi JerryChang,

Thank you for your kind help.

Problem get resolved now after understanding the Port bindings and verify the port binding results concept. Actually in my device 7 pads is there: 6 sink pad and one source pad. I initialized the 7 ports for every pads and node is getting created now without any panic.

Note: My system is having dual channel video mechanism so do not get confused with multiple entity.

Please find the media device information:

*Media controller API version 0.1.0

Media device information

driver tegra-vi4
model NVIDIA Tegra Video Input Device
serial
bus info
hw revision 0x3
driver version 0.0.0

Device topology

  • entity 1: 150c0000.nvcsi–2 (2 pads, 2 links)
    type V4L2 subdev subtype Unknown flags 0
    device node name /dev/v4l-subdev0
    pad0: Sink
    ← “adv7604 30-0020”:6 [ENABLED]
    pad1: Source
    → “vi-output, adv7604 30-0020”:0 [ENABLED]

  • entity 4: adv7604 30-0020 (7 pads, 1 link)
    type V4L2 subdev subtype Unknown flags 0
    device node name /dev/v4l-subdev1
    pad0: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad1: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad2: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad3: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad4: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad5: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad6: Source
    [fmt:RGB888_1X24/1600x1200 field:none colorspace:srgb
    crop.bounds:(0,0)/1600x1200
    crop:(0,0)/1600x1200]
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    [dv.query:no-link]
    [dv.current:BT.656/1120 1600x1200p60 (2160x1250) stds:DMT flags:]
    → “150c0000.nvcsi–2”:0 [ENABLED]

  • entity 12: vi-output, adv7604 30-0020 (1 pad, 1 link)
    type Node subtype V4L flags 0
    device node name /dev/video0
    pad0: Sink
    ← “150c0000.nvcsi–2”:1 [ENABLED]

  • entity 24: 150c0000.nvcsi–1 (2 pads, 2 links)
    type V4L2 subdev subtype Unknown flags 0
    device node name /dev/v4l-subdev2
    pad0: Sink
    ← “adv7604 32-0020”:6 [ENABLED]
    pad1: Source
    → “vi-output, adv7604 32-0020”:0 [ENABLED]

  • entity 27: adv7604 32-0020 (7 pads, 1 link)
    type V4L2 subdev subtype Unknown flags 0
    device node name /dev/v4l-subdev3
    pad0: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad1: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad2: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad3: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad4: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad5: Sink
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    pad6: Source
    [fmt:RGB888_1X24/1600x1200 field:none colorspace:srgb
    crop.bounds:(0,0)/1600x1200
    crop:(0,0)/1600x1200]
    [dv.caps:BT.656/1120 min:0x0@25000000 max:1920x1200@225000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
    [dv.query:no-link]
    [dv.current:BT.656/1120 1600x1200p60 (2160x1250) stds:DMT flags:]
    → “150c0000.nvcsi–1”:0 [ENABLED]

  • entity 35: vi-output, adv7604 32-0020 (1 pad, 1 link)
    type Node subtype V4L flags 0
    device node name /dev/video1
    pad0: Sink
    ← “150c0000.nvcsi–1”:1 [ENABLED]

You can refer my device tree: tegra186-tx2-ADV7604-2CAM_updated.txt (9.3 KB)

Accessing user space memory outside uaccess.h routines