On 06.10.2017 18:50, Jon Hunter wrote: > > On 06/10/17 16:26, Dmitry Osipenko wrote: >> On 06.10.2017 16:11, Jon Hunter wrote: >>> >>> On 04/10/17 00:58, Dmitry Osipenko wrote: >>>> AHB DMA controller presents on Tegra20/30 SoC's, it supports transfers >>>> memory <-> AHB bus peripherals as well as mem-to-mem transfers. Driver >>>> doesn't yet implement transfers larger than 64K and scatter-gather >>>> transfers that have NENT > 1, HW doesn't have native support for these >>>> cases, mem-to-mem isn't implemented as well. >>> >>> The APB DMA does not have h/w support for sg-transfers either, but >>> transfer request are placed on a list. Can we not do the same for AHB? >>> >> >> We can, but I'm not going to implement it without a use-case. It could be done >> later if needed. > > OK, that's fine, maybe state that above. > It just occurred to me that you are meaning to state that there is no use-case, I'll mention it in the commit message. -- 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
