Hi,
sorry for the delay!
> > Uwe Kleine-König had the idea to disable DMA on the i.MX6dl based
> platform via dts and this is our current workaround.
>
> Please test Ian's patch:
> http://marc.info/?l=linux-serial&m=150005865213531&w=2
>
> It should fix this DMA problem with RS485.
With this patch applied my test works fine on i.MX6dl in RS485-mode and DMA enabled.
Regards
Gavin Schenk
Eckelmann AG
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