[U-Boot] [PATCH 3/3 V2] MX28: SPI: Add DMA transfer support
Stefano Babic
sbabic at denx.de
Mon Jul 16 17:03:18 CEST 2012
On 09/07/2012 12:48, Marek Vasut wrote:
> The DMA transfers happen only if the transfered data are larger
> than 512 bytes. Otherwise PIO is used. This is a small speed
> optimization.
>
> The DMA transfer doesn't work if unaligned transfer is requested
> due to the limitation of the DMA controller. This has to be fixed
> by introducing generic bounce buffer. Therefore the DMA feature
> is now disabled by default.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Fabio Estevam <festevam at gmail.com>
> Cc: Otavio Salvador <otavio at ossystems.com.br>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Wolfgang Denk <wd at denx.de>
> ---
Applied to u-boot-imx, next branch, thanks.
Best regards,
Stefano Babic
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