Re: Issues with i.MX SPI DMA transfers

[Uwe Kleine-König]

Hello Igor,

On Wed, Mar 27, 2019 at 08:40:00PM +0300, Igor Plyatov wrote:
> please, help to resolve two issues with SPI DMA transfers at i.MX6Q
> platform.
> 
> First issue is
>  [ 4465.008003] spi_master spi0: I/O Error in DMA RX
> 
> Second issue is duplication for one of received bytes.
> 
> Probably, these issues related to each one.

This is probably the same problem I hit some time ago. Check ERR009165
in the errata. You either need to disable DMA or need a fixed
sdma-Script.

Best regards
Uwe

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Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |