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Set A72 frequency to fixed speed

Jacob B

Hello,

In order to evaluate some functions on a A72 core, I need to fix my core frequency to a predefined one (at my own risk regarding thermal considerations or damage on the CPU).

How to set up this frequency ? I haven't seen any register nor instructions to set the frequency.

Note that I am on Ubuntu based OS but can not use any tool like cpufrequtils.

Thanks