Video decoder ADV7280m not picking up video

[tornado1100]

Hello,

I contacted some time before on hardware setup for ADV7280m, which is an analog to mipi csi 2 (1 lane) decoder. As per the information in this answer, I modified my hardware. Now I can see the device as per the following responses:

Media controller API version 5.15.148

Media device information
------------------------
driver          tegra-camrtc-ca
model           NVIDIA Tegra Video Input Device
serial          
bus info        
hw revision     0x3
driver version  5.15.148

Device topology
- entity 1: 13e00000.host1x:nvcsi@15a00000- (2 pads, 2 links)
            type V4L2 subdev subtype Unknown flags 0
            device node name /dev/v4l-subdev0
	pad0: Sink
		<- "adv7180 10-0021":0 [ENABLED]
	pad1: Source
		-> "vi-output, adv7180 10-0021":0 [ENABLED]

- entity 4: 13e00000.host1x:nvcsi@15a00000- (2 pads, 0 link)
            type V4L2 subdev subtype Unknown flags 0
            device node name /dev/v4l-subdev1
	pad0: Sink
	pad1: Source

- entity 7: adv7180 10-0021 (1 pad, 1 link)
            type V4L2 subdev subtype Decoder flags 0
            device node name /dev/v4l-subdev2
	pad0: Source
		[fmt:UYVY8_2X8/720x480@1001/30000 field:none colorspace:smpte170m]
		-> "13e00000.host1x:nvcsi@15a00000-":0 [ENABLED]

- entity 9: vi-output, adv7180 10-0021 (1 pad, 1 link)
            type Node subtype V4L flags 0
            device node name /dev/video0
	pad0: Sink
		<- "13e00000.host1x:nvcsi@15a00000-":1 [ENABLED]

and

$ v4l2-ctl --list-devices
NVIDIA Tegra Video Input Device (platform:tegra-camrtc-ca):
	/dev/media0

vi-output, adv7180 10-0021 (platform:tegra-capture-vi:0):
	/dev/video0

,

However, I’m getting a green screen when I try to run the video:

~$ gst-launch-1.0 v4l2src device=/dev/video0 ! xvimagesink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
WARNING: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Signal lost
Additional debug info:
../sys/v4l2/gstv4l2src.c(556): gst_v4l2src_query_preferred_size (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
No input source was detected - video frames invalid
Redistribute latency...

Using oscilloscope, I verified that the analog video is being input, but there’s no activity on the MIPI CSI lines (clk and data both).

Any idea how to solve this?

Thank you.

[ShaneCCC]

I think you need to check you HW connection.

Thanks

[Trumany]

@tornado1100

but there’s no activity on the MIPI CSI lines (clk and data both)

Seems ADV7280m is not correctly configured. You may need tocheck with vendor for root cause first.

[tornado1100]

Ive checked, the hardware connection seems correct.