is this a ROG Ally? if you need cpu boost control, SimpleDeckyTDP does actually support it. You need to change your scaling driver to amd-pstate, not amd-pstate-epp
Yeah I am currently using Powertools but I don't like how buggy it is. One annoying issue I found is that the Frequency Limits for CPU and GPU don't persist if game is having Launcher required to start it up. I need to use "Reapply Settings" to get it to work.
Another issue is when using a per game profile the Powertools GPU Frequency Limit doesn't work automatically and I need to manually re-enable it.
There is no way to directly limit CPU clocks using the steam sliders and Manual GPU Clock stops working if I put the device to sleep(This might be due to Powertools as another person reported that this setting worked even after sleep for them and they didn't have Powertools installed).
Yeah I tried to indirectly limit CPU clocks by using Manual GPU Clock and TDP Limiter together but I find I needed to set the TDP Limiter to 4 watts along with Manual GPU Clock set to 800 MHz for the CPU to not draw too much power.
Its really not as efficient as directly manipulating the CPU clocks as you need to set the TDP Limiter pretty low at 4 watts in order for the CPU to not consume too much power with a Manual GPU Clock of 800 MHz.
While not quite as exciting as yesterday's AMD XDNA driver publishing for Ryzen AI on Linux, a notable patch series out of AMD today on the Linux front is enabling AMD Core Performance Boost controls within their P-State CPU frequency scaling driver.
Thats the sweet spot for most games. You can set it higher but still it's not as good as directly limiting the CPU clocks. They should just allow people to cap the power limit of the CPU of Deck rather than the CPU+GPU as that would eliminate this problem.