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AM3352: Disable frequency scaling

Part Number: AM3352

Hi processor Team.

When I checked the CPU frequency, it sometimes changed depending on the CPU load.

I use a AM3352BZCZ100.

I guess the cause of changing frequency is frequency scaling function.

I want to disable frequency scaling and fix the frequency.

Could I get a guide how to disable frequency scaling?

And when the frequency scaling is disabled, are there any things to consider?

My linux kernel version is v4.9.69 and yocto version is 2.2.3