Dear Groups Member 
I have debugging on UART mode, and the result is stuck on logo. 
From the log UART 
Apply dtbo 0
   Uncompressing Kernel Image ... OK
   Loading Ramdisk to 7b4ed000, end 7b5a618b ... OK
   Loading Device Tree to 000000001ffe6000, end 000000001ffffad1 ... OK
Starting kernel ...
boot 64bit kernel
[    0.000000@0]d Booting Linux on physical CPU 0x0
[
    0.000000@0]d Linux version 4.9.180-gbbe8b4deccf0-dirty 
(nobody@android-build) (gcc version 6.3.1 20170109 (Linaro GCC 
6.3-2017.02) ) #1 SMP PREEMPT Mon Nov 8 20:17:47 HKT 2021
[    0.000000@0]d Boot CPU: AArch64 Processor [412fd050]
[    0.000000@0]d earlycon: aml-uart0 at MMIO 0x00000000fe07a000 (options '')
[    0.000000@0]d bootconsole [aml-uart0] enabled
AOCPU unknown cmd=12
r ao no exist reg:0xffff[cec_get_portinfo]: info=0x0
What is caused the problem? 
Thank You 
Mawna