GMSL camera problem

[Towe_Roll]

request timed out！！！

isx031 + max96717 + max9296a

dmesg.txt (72.9 KB)

[Towe_Roll]

How can I view more log information to facilitate my troubleshooting?

[ShaneCCC]

Get the trace log by below command.

sudo su
echo 1 > /sys/kernel/debug/tracing/tracing_on
echo 30720 > /sys/kernel/debug/tracing/buffer_size_kb
echo 1 > /sys/kernel/debug/tracing/events/tegra_rtcpu/enable
echo 1 > /sys/kernel/debug/tracing/events/freertos/enable
echo 3 > /sys/kernel/debug/camrtc/log-level
echo 1 > /sys/kernel/debug/tracing/events/camera_common/enable
echo > /sys/kernel/debug/tracing/trace

v4l2-ctl --stream-mmap -c bypass_mode=0

cat /sys/kernel/debug/tracing/trace

[Towe_Roll]

[ShaneCCC]

Looks like doesn’t receive any data from the sensor.

You may need to confirm the device tree config and have scope probe the signal to confirm.

Thanks

[Towe_Roll]

hello，shaneccc，

Now we have the data but it’s not normal. Could you please take a look at it for me?

[carolyuu]

— 🤖 This is an automated AI response. I’m here to help, but please verify important details! —

Based on the provided context, I found a similar issue with a GMSL camera on the Jetson Orin NX. The issue was related to the configuration of the pixel clock (pclk) of the serdes.

According to the context, ShaneCCC mentioned that the serdes_pix_clk_hz should be a little higher than the pix_clk_hz. The formula to calculate serdes_pix_clk_hz is:

serdes_pix_clk_hz = (deserializer output data rate in hertz) * (number of CSI lanes) / (bits per pixel)

Output data rate = (sensor or deserializer pixel clock in hertz) * (bits per pixel) / (number of CSI lanes)

You may need to adjust the pclk of the serdes based on the output rate of the MIPI lane.

Additionally, you can refer to the document “Sensor Software Driver Programming” for guidance on programming sensor software drivers.

I could not find clear support for the specific error message “request timed out！！！” in the provided Jetson Orin NX documentation. However, I hope the above information helps you to resolve the issue with your GMSL camera on the Jetson Orin NX.

Please note that the context does not provide a clear solution to the problem, and further investigation may be required to resolve the issue.

— We support team will also look into your issue to have further suggestions soon. please stay tuned. —

[Towe_Roll]

I can now operate with just one camera, but when using two cameras together, there will be a tearing issue. How can this be resolved? The dmesg output is printing crazily.

[ShaneCCC]

They are working normally individually?

Does boost the clocks help on it.

Please get the trace log.

[Towe_Roll]

Working alone is normal. I have tried to increase the clock speed of the Jetson VI, but it didn't work.

[ShaneCCC]

I would suspect the max9296a config problem.

Thanks