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[#1]

OV5648 on i.MX8ULP — Frames Turn Black During Continuous Capture (File Size Constant, Logs Similar)

Hello,
We are using the OV5648 camera sensor integrated into our custom i.MX8ULP-based board. Basic camera functionality works well, we can capture images without issues.

However, we encounter a problem during continuous image capture. After running for some time( around 1-2 hours), the camera still delivers frames, but the images become completely black. Important details:

• The captured image files keep the same size as the valid images.

• Kernel and driver logs appear identical between the working and non-working states.

• No obvious errors are reported in the V4L2 or CSI logs.

• Camera recovers only after a full system reset (simple restart of the capture application does not help).

I’ve attached logs for both the working and non-working states.

What are the recommended steps to debug and identify whether the issue comes from the OV5648 sensor, the MIPI-CSI interface, or the ISI/V4L2 pipeline on the i.MX8ULP?

Any guidance or known issues related to this behavior would be greatly appreciated.

Thank you in advance!

i.MX 8M | i.MX 8M Mini | i.MX 8M Nanoi.MX8ULPLinuxYocto ProjectRe: OV5648 on i.MX8ULP — Frames Turn Black During Continuous Capture (File Size Constant, Logs Simil

do you mind dumping all of register with work and non-work? any difference?

Re: OV5648 on i.MX8ULP — Frames Turn Black During Continuous Capture (File Size Constant, Logs Simil

the address in your file is for offset address, right? what are the base address? I don't know what registers you dump

Re: OV5648 on i.MX8ULP — Frames Turn Black During Continuous Capture (File Size Constant, Logs Simil

That is an actual register, and I checked it with the datasheet too.

Re: OV5648 on i.MX8ULP — Frames Turn Black During Continuous Capture (File Size Constant, Logs Simil

I‘m not mean ov5648 registers, I don't have ov5648 camera and couldn't reproduce this, for ov5648 side, you need check by yourself I need imx8ulp register，if you have ov5640 to test, I can reproduce this on my side

Re: OV5648 on i.MX8ULP — Frames Turn Black During Continuous Capture (File Size Constant, Logs Simil

We are already streaming OV5640 on an HDMI display, and we have not seen any black frame issues.

Re: OV5648 on i.MX8ULP — Frames Turn Black During Continuous Capture (File Size Constant, Logs Simil

yes I know this, the DFAE already told me all of situation about ov5640 and ov5695, and I need more detailed information, and I sent my request to the DFAE, Pls offer that, if you haven't received my request, pls let me know it, we can focus on that case