| 平台 | 内核版本 | 安卓版本 |
|---|---|---|
| RK3399 | Linux4.4 | Android7.1 |
CPU定频
关闭温控
echo user_space > /sys/class/thermal/thermal_zone0/policy
切换变频策略（A53是cpu0，A72是cpu4）
echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo userspace > /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor
查看支持哪些频率（A53是cpu0，A72是cpu4）
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
cat /sys/devices/system/cpu/cpu4/cpufreq/scaling_available_frequencies
定频（A53是cpu0，A72是cpu4）
echo 1512000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
echo 1992000 > /sys/devices/system/cpu/cpu4/cpufreq/scaling_setspeed
查看当前频率（A53是cpu0，A72是cpu4）
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
cat /sys/devices/system/cpu/cpu4/cpufreq/cpuinfo_cur_freq
GPU 定频
关闭温控
echo user_space > /sys/class/thermal/thermal_zone1/policy
切换变频策略
echo userspace > /sys/class/devfreq/ff9a0000.gpu/governor
查看支持哪些频率
cat /sys/class/devfreq/ff9a0000.gpu/available_frequencies
定频
echo 800000000 > /sys/class/devfreq/ff9a0000.gpu/userspace/set_freq
查看当前频率
cat /sys/class/devfreq/ff9a0000.gpu/cur_freq
