rk3399 android 7.1
gpio 基地址 gpio1 0xff320000 gpio3 0xff77e010

关闭系统打印 echo 0 >proc/sys/kernel/printk

GRF的的映射地址是FF770000 gpio2a 就是ff77e000 gpio3a ff77e010 gpio4a ff77e020


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rk3399 android 7.1
gpio 基地址 gpio1 0xff320000 gpio3 0xff77e010

关闭系统打印 echo 0 >proc/sys/kernel/printk

GRF的的映射地址是FF770000 gpio2a 就是ff77e000 gpio3a ff77e010 gpio4a ff77e020


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