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 -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
