image sync problem?

[lerabot]

Hello, first of all thank you for your pcb layout :) I fab'd 5 board last month and they work great.

I have an image sync issue and I'm wonderig you you had the same problem, check the screenshot.

I'm capturing using s-video NTSC, but I can see this problem even on composite.

[rniwase]

Hi, @lerabot. Thanks for making sure it works.

I am aware of this problem and apologize for not announcing it in advance.

I have tried to solve this problem by directly rewriting the registers of the ADV7280A-M, but I have not been able to solve it yet.

I believe that the problem is probably in the hardware design.
In particular, there may be a fault in the power supply or the MIPI CSI transmission line.

I am too busy with other work to tackle this problem right now,
but I will try to get an evaluation board from Analog Devices someday to compare the operation.

[lerabot]

Thank for the quick feedback. I might try to write a script that try to detect and stitch the image together for the time being.

Also, I posted on the raspberry pi forum about this. https://forums.raspberrypi.com/viewtopic.php?p=2111105#p2110939

I might try to hack together something with the ADM7280 driver at some point to try to correct the power up timing sequence.

[lerabot]

Hello again. I'm resuming work on this and will try hacking with the register again. If you have any clues on how to fix this in software, I'll gladly take them.