[CPU] Adjust the frequency boundary for single core of CPU

Hi there,

I have a question and I would like to consult with you guys.
Currently, we are developing an application that can adjust some system configurations for Jetson series devices.
One of the features is adjusting the upper bound and lower bound of CPU frequency.
When I try to use the following method to adjust the CPU upper bound frequency for the core I assign.
I found that all six cores apply the same upper boundary frequency rather than only the core I assign.
$ echo <cpu_freq> > /sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq

I would like to ask is there any method to adjust the frequency boundary for single CPU core? Or does it belong to the limitation of Nvidia Jetson series devices?
Hope you guys could share some experience with me.
Thanks for your help so much.