init.rc小技巧-获取系统属性赋值给节点

废话不多说，直接demo
on boot
    setprop ro.radio.noril true
    write /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor interactive
    write /sys/class/freq_limit/limit 0
    write /sys/module/amvdec_h265/parameters/mmu_enable 0
    write /sys/devices/system/cpu/cpu0/cpufreq/scaling_dflt_freq 2016000
   write /sys/class/xxx/xxx   ${persist.sys.xxx.xxxx}