Using dma in uart driver

[arisav]

Hi 

We are using cyclic dma in our uart driver (modified imx-uart.c) and ocassionally there seems to have data loss in receive side. Is it possible to use dma without RTS/CTS handshaking?

Common transfer characteristics are:

kernel version:3.14.28
Baud Rate: 1000000
Handshaking:None
Using Cyclic DMA

Best Regards 

Ari

[Yuri]

Hello,

   To avoid data lost  RTS / CTS handshaking must be used.

Have a great day,

Yuri

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