Video glitch Issue on Jetson Orin NX

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin NX
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1

Hi Team,

We are using a custom board based on the Jetson Orin NX module, running JetPack 6.2, which includes Jetson Linux 36.4.3 (Kernel 5.15) and an Ubuntu 22.04 root file system.

We have been experiencing a random video glitch issue while streaming from a camera.


For reference, please find the connection diagram attached below.

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![VID_20250325_152312|video]

This issue has been observed in 2 out of 10 SOMs , and after replacing the affected SOMs, the glitch was no longer present. During the glitch, we executed the following commands:

echo 1 > /sys/kernel/debug/bpmp/debug/clk/vi/mrq_rate_locked
echo 1 > /sys/kernel/debug/bpmp/debug/clk/isp/mrq_rate_locked
echo 1 > /sys/kernel/debug/bpmp/debug/clk/nvcsi/mrq_rate_locked

cat /sys/kernel/debug/bpmp/debug/clk/vi/max_rate | tee /sys/kernel/debug/bpmp/debug/clk/vi/rate
cat /sys/kernel/debug/bpmp/debug/clk/isp/max_rate | tee /sys/kernel/debug/bpmp/debug/clk/isp/rate
cat /sys/kernel/debug/bpmp/debug/clk/nvcsi/max_rate | tee /sys/kernel/debug/bpmp/debug/clk/nvcsi/rate

Running these commands resolves the issue, but we would like to understand:

  1. Could applying these settings cause any long-term issues?
  2. What could be the root cause of this random glitch occurring in certain SOMs?

Looking forward to your insights.

3

Suppose the problem cause by improper pix_clk_hz/serdes_pix_clk_hz to allocate less NVCSI/VI bandwidth. You can increase it in your device tree to verify.