[U-Boot] [PATCH] mmc: omap_hsmmc: add adma support

[Balaji T K]

On Monday 12 May 2014 06:58 PM, Tom Rini wrote:
> On Fri, May 02, 2014 at 07:25:20PM +0530, Balaji T K wrote:
>
>> MMC instance 1 and 2 is capable of ADMA in omap4, omap5.
>> Add support for ADMA and enable ADMA for read/write to
>> improve mmc throughput.
> [snip]
>> @@ -44,12 +45,30 @@
>>   #undef OMAP_HSMMC_USE_GPIO
>>   #endif
>>
>> +#ifdef CONFIG_SPL_BUILD
>> +#undef CONFIG_OMAP_MMC_ADMA
>> +#endif
>
> Why?  Especially since a number of the folks interested in this for
> performance want it for SPL OS mode.  Thanks!

Because in SoCs like OMAP4/5 mmc1/2 adma doesn't have access to sram.
So can't have descriptor or src / destination buffers (allocated on stack)
given by mmc core on sram.

Thanks and Regards,
Balaji T K.

>