剛開始配置rk3188板子的時候，

基本配置，RK3188 RK616 ACT8846 8G的flash,

開機的時候提示如下：

<6>[ 18.729270] request_suspend_state: wakeup (0->0) at 18680347129 (1970-01-01 00:00:18.671397630 UTC) <4>[ 23.810524] UMP: ERR: /home/xxm/project/mali_git/driver/src/devicedrv/ump/linux/ump_kernel_linux.c <4>[ 23.810593] ump_file_open() 251 <4>[ 23.810634] Minor not zero in ump_file_open() <4>[ 23.810662] <4>[ 23.811502] UMP: ERR: /home/xxm/project/mali_git/driver/src/devicedrv/ump/linux/ump_kernel_linux.c <4>[ 23.811564] ump_file_open() 251 <4>[ 23.811591] Minor not zero in ump_file_open() <4>[ 23.811619] <6>[ 23.990544] request_suspend_state: wakeup (0->0) at 23941622629 (1970-01-01 00:00:23.932673130 UTC) <4>[ 29.040916] UMP: ERR: /home/xxm/project/mali_git/driver/src/devicedrv/ump/linux/ump_kernel_linux.c <4>[ 29.040968] ump_file_open() 251 <4>[ 29.041005] Minor not zero in ump_file_open() <4>[ 29.041025] <4>[ 29.041583] UMP: ERR: /home/xxm/project/mali_git/driver/src/devicedrv/ump/linux/ump_kernel_linux.c <4>[ 29.041627] ump_file_open() 251 <4>[ 29.041647] Minor not zero in ump_file_open() <4>[ 29.041667] <6>[ 29.201502] request_suspend_state: wakeup (0->0) at 29152579130 (1970-01-01 00:00:29.143630006 UTC)
然后RK那邊讓我們修改了ACT8846的VCCio

{ name ? ? ? ? ?= "act_ldo8", ? //vcc28_cif .min_uv ? ? ? ? ?= 3300000, .max_uv ? ? ? ? = 3300000, },
硬件回復

因為我把DCDC4 設置成了主電壓，然后很多IO口和供電都需要3.0V以上，系統就將PMU DCDC4 的電壓設置了3.3V

總結

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