RK3566: add power optimizations (govtuning + PipeWire)#2399
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Zetarancio wants to merge 1 commit intoROCKNIX:nextfrom
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RK3566: add power optimizations (govtuning + PipeWire)#2399Zetarancio wants to merge 1 commit intoROCKNIX:nextfrom
Zetarancio wants to merge 1 commit intoROCKNIX:nextfrom
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Governor tuning (100-rk3566-govtuning): Boards that feed the CPU from an external I2C PMIC (RK8600, SYR827, RK817, etc.) suffer from interrupt storms that drain battery: every DVFS voltage change goes over I2C, so aggressive scaling causes excessive traffic and wakeups. Rate-limit ondemand (300 ms sampling, tuned thresholds) to reduce I2C churn while keeping responsiveness. PipeWire (99-rk3566-power.conf): - pulse: idle timeout 5 s - pipewire: power-of-two quantum, min quantum 1024 For lower CPU wakeups and predictable latency on handhelds.
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I think consensus is that we should switch to schedutil. Closing. |
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Governor tuning (100-rk3566-govtuning):
Boards that feed the CPU from an external I2C PMIC (RK8600, SYR827, RK817, etc.) suffer from interrupt storms that drain battery: every DVFS voltage change goes over I2C, so aggressive scaling causes excessive traffic and wakeups. Rate-limit ondemand (300 ms sampling, tuned thresholds) to reduce I2C churn while keeping responsiveness. This is what other distro are using for
PipeWire (99-rk3566-power.conf):