Re: How to enable experimental CPU frequency support

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Hi Sam,

Am 13.01.19 um 23:37 schrieb sam tygier:
> Hi.
>
> I've been trying to adjust the frequency but never seen /sys/devices/system/cpu/cpufreq/policy0/scaling_cur_freq say anything other than 600000 even with 2 cpu intensive processes running.
>
> I have 4.19.13-300.fc29.aarch64
>
> It seems that despite
> # cat scaling_available_frequencies
> 600000 900000 1200000 1400000
>
> scaling_max_freq is stuck on 600000
>
> With the scaling_governor set to performance or ondemand, I don't seem able to adjust the scaling_max_freq, so the cpu is always stuck at 600MHz,
>
> [root@sam-pi policy0]# echo 1400000 > scaling_max_freq
> [root@sam-pi policy0]# cat scaling_max_freq
> 600000
>
> with govener set to userspace I am also unable to make changes
> [root@sam-pi policy0]# echo 900000 > scaling_setspeed
> [root@sam-pi policy0]# cat scaling_setspeed
> 600000
>
> Is there anything more I need to do?

do you have the entries "enable_uart" or "core_freq" in your config.txt?

Try to uncomment them.

Best regards
Stefan
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