DM388: Need the location of code to change ARM frequency

Hi Team,

We are using IPNC_RDK version 3.9.1 in our custom board. Logs show currently the ARM core runs at 400MHz. I am trying to change the frequency, but unable to locate the code to set PLLs.

Please help to locate the code, or please let know if there is any example on this.

Note:

Data sheet mentions ARM PLL is locked to provide 600MHz, does this mean this cannot be changed?

Thanks,

Mubeen