rk3288

gpio  x*32+ y*8 + z

pmu

/kernel/drivers/mfd$ vi rk808.c

https://www.cnblogs.com/zzb-Dream-90Time/p/8116401.html

root@EMT100X:/sys/class/gpio/gpio238 # echo 0 > value
root@EMT100X:/sys/class/gpio/gpio238 #
C:\Users\James>adb shell

编译linux

http://wiki.t-firefly.com/zh_CN/Firefly-RK3288/linux_compile_gpt.html