Le Thu, May 22, 2025 at 07:16:17AM +0200, Tobias Heider a écrit :
> On Snapdragon X Elite chips we have to use ARM SCMI to control cpu performance.
> Our driver now supports reading the current performance level, translating
> it to HZ and exporting it as a sensor as well as setting initial levels.
> 
> I think it is time to hook everything up to cpu_setperf and cpu_clockspeed to
> make those controls available to apm and hw.setperf.
> Loosely inspired by aplcpu which deals with a similar problem on Apple machines.
> 
> ok? test feedback?

works fine on the omnibook x14.

- i have 3 new sysctls for hw, cpuspeed, setperf and perfpolicy.
- previously i had 'invalid' for 'Performance adjustment mode' in apm output.
now when plugged in i have:
Performance adjustment mode: manual (3417 MHz)
hw.sensors.scmi0.power0=0.29 W
hw.sensors.scmi0.power1=0.30 W
hw.sensors.scmi0.power2=0.31 W
hw.sensors.scmi0.frequency0=3417600000.00 Hz
hw.sensors.scmi0.frequency1=3417600000.00 Hz
hw.sensors.scmi0.frequency2=3417600000.00 Hz
hw.cpuspeed=3417
hw.setperf=100
hw.perfpolicy=high

when unplugged:
Performance adjustment mode: auto (710 MHz)
hw.sensors.scmi0.power0=0.02 W
hw.sensors.scmi0.power1=0.02 W
hw.sensors.scmi0.power2=0.02 W
hw.sensors.scmi0.frequency0=710400000.00 Hz
hw.sensors.scmi0.frequency1=710400000.00 Hz
hw.sensors.scmi0.frequency2=710400000.00 Hz
hw.cpuspeed=710
hw.setperf=0
hw.perfpolicy=auto

great quality of life improvement :)

Landry