Re: [PATCH 1/1] mmc: host: enable OMAP DMA engine support for omap hosts by default

[Javier Martinez Canillas <javier@xxxxxxxxxxxx>]

On Tue, Jul 17, 2012 at 8:45 AM, Shilimkar, Santosh
<santosh.shilimkar@xxxxxx> wrote:
> Hi,
>
> On Tue, Jul 17, 2012 at 6:00 AM, Javier Martinez Canillas
> <javier@xxxxxxxxxxxx> wrote:
>> The OMAP MMC and OMAP High Speed MMC hosts now use entirely the DMA
>> engine API instead of the previous private DMA API implementation.
>>
>> So, if the kernel is built with support for any of these hosts but it
>> doesn't support DMA devices nor OMAP DMA support, it fails when trying
>> to obtain a DMA channel which leads to the following error on an OMAP3
>> IGEPv2 Rev.C board (and probably on most OMAP boards with MMC support):
>>
>> [    2.199981] omap_hsmmc omap_hsmmc.1: unable to obtain RX DMA engine channel 48
>> [    2.215087] omap_hsmmc omap_hsmmc.0: unable to obtain RX DMA engine channel 62
>>
>> selecting automatically CONFIG_DMADEVICES and CONFIG_DMA_OMAP solves it.
>>
>> Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxx>
>> ---
> Considering, we are updating drivers to select the DMA engine, can you
> also include
> "drivers/spi/spi-omap2-mcspi.c" which is also updated for DMA engine.
>
> Regards
> Santosh

Hi Santosh,

Ok, I'll send a v2 now which includes spi-omap2-mcspi then.

Thanks a lot and best regards,
Javier
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