Omap-L138 EDMA reads extra bytes from UART

Hi,

I am using Omapl-138 EVM. I have configured EDMA3  for UART. I am receiving the data from UART through DMA and putting received data  in a buffer. It works fine at low baud rates upto 460800bps.  It does not work at higher baud rates. The problem I see is,that EDMA reads one or two extra bytes some time. I have also enabled hardware flow control but it makes no difference. Even no error occur on UART side.

Has any one used serial Rx with DMA at such higher baud rate? Any help or clue please?

I am using our own proprietary softwares.

Thanks in advance

Jam