On Wed, Feb 6, 2019 at 1:42 PM Maxime Ripard <maxime.ripard@xxxxxxxxxxx> wrote: > > Some SoCs have devices that are using a separate bus from the main bus to > perform DMA. > > These buses might have some restrictions and/or different mapping than from > the CPU side, so we'd need to express those using the usual dma-ranges, but > using a different DT node than the node's parent. > > Add support for a dma-parent property that links to the DMA bus used by the > device in such a case. ?? dma-parent is gone now, right? And I see #dma-parent-cells? Rob
