[meta-freescale] [PATCH] spi-imx -> make DMA optional through DT

[Otavio Salvador]

Hello Hans,

(Adding Fabio Estevam on Cc)

On Tue, Mar 29, 2016 at 4:28 PM, Hans Christian Lønstad
<hcl at datarespons.no> wrote:
> This patch applies to kernel 4.1.15_ga and fixes a regression for UBIFS on
> SPI NOR introduced by assigning DMA channels in DT
>
> When UBIFS uses SPI NOR devices, the IO buffer allocation using vmalloc
> creates problems when the SPI controller is DMA based (as it is for some
> ARM SoC's).
> Introduce a "nodma" boolean DT attribute as a fix for imx SoC.

Is this a NXP's specific regression? or this is also found on mainline
kernel? If so, we ought to address this on mainline and backport the
referred fixes for the issue.



-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750