Re: [PATCH v2 4/7] of: address: Add support for the dma-parent property
From: Rob Herring <robh+dt@kernel.org>
Date: 2019-02-06 20:57:51
Also in:
dri-devel, linux-devicetree
On Wed, Feb 6, 2019 at 1:42 PM Maxime Ripard [off-list ref] 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel