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Using dma in uart driver

Question asked by Ari Savolainen on Sep 21, 2016
Latest reply on Sep 21, 2016 by Yuri Muhin

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

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