Re: [PATCH 1/5] dt-bindings: media: mtk-vcodec: Add dma-ranges property
From: Rob Herring <robh@kernel.org>
Date: 2021-02-10 22:56:15
Also in:
linux-arm-kernel, linux-media, linux-mediatek, lkml
On Wed, Feb 03, 2021 at 04:37:48PM +0800, Irui Wang wrote:
quoted hunk ↗ jump to hunk
Adds dma-ranges property for DMA addresses translation. Signed-off-by: Irui Wang <redacted> --- Documentation/devicetree/bindings/media/mediatek-vcodec.txt | 2 ++ 1 file changed, 2 insertions(+)diff --git a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt index f85276e629bf..e4644f8caee9 100644 --- a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt +++ b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt@@ -23,6 +23,8 @@ Required properties: - iommus : should point to the respective IOMMU block with master port as argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt for details. +- dma-ranges : describes how the physical address space of the IOMMU maps + to memory.
dma-ranges is supposed to be in a bus/parent node.
One of the two following nodes: - mediatek,vpu : the node of the video processor unit, if using VPU. - mediatek,scp : the node of the SCP unit, if using SCP. -- 2.25.1