Any plans to add DMA support for mxs-auart serial driver? I noticed
it is impossible to archive full 3.25 Mbs speed with current one.

No plans from our side, currently.

As I understood porting DMA support from freescale's driver is not
trivial because MXS DMA implementation has been changed to mainline
version.

Yes, luckily. DMAENGINE is really the way to go.

Regards,

   Wolfram

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |