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AM3354: 串口开启dma,会偶尔丢包问题

Part Number: AM3354

串口在使用8250驱动,开启dma的时候,波特率921600,20Hz接收gps数据,会偶尔丢包,出现溢出错误。请教一下,有什么处理办法吗?在用串口omap驱动的时候,不会丢包,但系统会很卡。