參考:RK3588 CPU GPU DDR NPU定頻和效能模式設定_rk3588 gpu-CSDN部落格
0、npu
cd /sys/class/devfreq/
可以看到 npu,gpu,vop(Video Output Processor),dmc(DDR)
定頻
echo userspace > /sys/class/devfreq/27700000.npu/governor echo 1000000000 > /sys/class/devfreq/27700000.npu/userspace/set_freq cat /sys/class/devfreq/27700000.npu/cur_freq
1、gpu
cat /sys/class/devfreq/27800000.gpu/available_frequencies echo userspace > /sys/class/devfreq/27800000.gpu/governor echo 900000000 > /sys/class/devfreq/27800000.gpu/userspace/set_freq cat /sys/class/devfreq/27800000.gpu/cur_freq
2、dmc(DDR)
cat /sys/class/devfreq/dmc/available_frequencies echo userspace > /sys/class/devfreq/dmc/governor echo 2112000000 > /sys/class/devfreq/dmc/userspace/set_freq cat /sys/class/devfreq/dmc/cur_freq
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