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您好：
我用dm368的evm板启动的时候为什么不能通过串口打印出启动信息，接上串口之后系统好像都不启动了，但是把串口拔掉之后可以通过SD卡正常启动，在显示屏上面有启动图标？
你好，
请问你uboot里面设置的串口端口是否正确？
