On 06/09/16 13:03, Dmitry Osipenko wrote: > 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. Description from the Tegra TRM: "The APB DMA Controller is placed between the AHB Bus and the APB Bus and is a master on both buses. The APB DMA Controller is used for block data transfers from a source location to the destination location. The source may be DRAM or IRAM, and the destination location could be devices placed on APB Bus; or vice versa." Cheers Jon -- nvpublic -- 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
