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Subject: media: dt-bindings: media: mtk-vcodec: Add dma-ranges property Author: Irui Wang <[email protected]> Date: Sat Jun 5 04:29:14 2021 +0200 The mt8192 iommu support 0~16GB iova. We separate it to four banks: 0~4G; 4G~8G; 8G~12G; 12G~16G. The "dma-ranges" could be used to adjust the bank we locate. If we don't set this property. The default range always is 0~4G. This is optional and only needed in mt8192, the dma ranges should not cross 4G/8G/12G. Here we don't have actual bus/parent concept here. And the iova requirement is for our HW. Thus put the property in our node. Acked-by: Rob Herring <[email protected]> Signed-off-by: Irui Wang <[email protected]> Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> Documentation/devicetree/bindings/media/mediatek-vcodec.txt | 1 + 1 file changed, 1 insertion(+) --- diff --git a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt index 06db6837cefd..5bb9e6e191b7 100644 --- a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt +++ b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt @@ -22,6 +22,7 @@ Required properties: - iommus : should point to the respective IOMMU block with master port as argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details. +- dma-ranges : describes the dma address range space that the codec hw access. 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. _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
