/ # devmem --help
BusyBox v1.20.0 (2012-12-18 01:43:09 CST) multi-call binary.
Usage: devmem ADDRESS [WIDTH [VALUE]]
Read/write from physical address
ADDRESS Address to act upon
WIDTH Width (8/16/...)
VALUE Data to be written
# devmem 0xe010e81c 32回车就会显示如下信息：
0x00005301
根据代码查看，0xe010e81c 寄存器的值就是0x00005301
所以是正确的
现在来修改这个寄存器的值
# devmem 0xe010e81c 32 0x00005000
# devmem 0xe010e81c
这样读出来就是0x00005000