dietpi-config option to set the DMC governor in Orange Pi 5

[vanfanel]

Hello there!

Currently there's an option in dietpi-config to set the CPU governor under performance, but we're missing an option to set the DMC (Dynamic Memory Controller) governor.

To make things easier, I will note that the DMC governor can be easily set to performance with:
echo performance | tee /sys/class/devfreq/dmc/governor

...so the option could be pretty trivial to add, I hope!

[MichaIng]

Many thanks for your request.

Interesting, memory controller scheduling. I wonder whether this is unique on Rockchip's RK3588 vendor kernel or exists on mainline Linux as well. Will check on NanoPi R6S/R6C.

Yes is indeed easy to implement. What is the default?

[vanfanel]

@MichaIng Available values are:

root@DietPi:~# cat /sys/class/devfreq/dmc/available_governors
rknpu_ondemand dmc_ondemand userspace powersave performance simple_ondemand

And the default value is:
dmc_ondemand