AGX Orin EMC frequency scaling problem

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

I followed the tutorial here, conducted 3D Frequency Scaling,

and adjusted the frequencies of the CPU, GPU, and EMC. However, I found that after lowering the frequency of EMC, I cannot immediately set it to a higher value again. Why is that? Are there any hardware limitations?

For Example，

Firstly,

echo 204000 > /sys/kernel/debug/bpmp/debug/clk/emc/rate

Then, run cuda-sample

1704285109581

Then, run

 echo 3199000 > /sys/kernel/debug/bpmp/debug/clk/emc/rate

4c134c176998f598cfe5608a1134a02

3

Have below command before change the rate.

echo 1 > /sys/kernel/debug/bpmp/debug/clk/emc/mrq_rate_locked
5

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