Re: [PATCH v2 0/2] Add memcpy support for tegra210-adma

[Dmitry Osipenko]

On 06.09.2016 14:33, Jon Hunter wrote:
> 
> On 03/09/16 01:32, Nicolin Chen wrote:
>> This series of patches add memcpy support for tegra210 ADMA engine.
> 
> Thanks. Any reason you choose this DMA and not the APB DMA? The APB DMA
> is more of a generic DMA and so for memcpy it would seem to be a good
> choice and it is available on all Tegras not just Tegra210.
> 

Just a small clarification:

If I'm not mistaken, APB DMA is mem-to-device, while AHB DMA is mem-to-mem. So,
you probably meant AHB and not the APB.

> Furthermore, from a power standpoint the ADMA is in the audio power
> domain and so using it for memcpy would mean the audio power domain is
> turned on. It may not be a big deal for some, but given the APB is in
> the CORE domain (always on when not in low-power) it seems like a better
> choice for power as well.
> 

-- 
Dmitry