Re: [PATCH v4,2/6] dt-bindings: media: mtk-vcodec: Add dma-ranges property
From: Rob Herring <robh@kernel.org>
Date: 2021-06-02 18:50:34
Also in:
linux-devicetree, linux-media, linux-mediatek, lkml
On Fri, 21 May 2021 15:01:35 +0800, Irui Wang wrote:
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. 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. Signed-off-by: Irui Wang <redacted> --- Documentation/devicetree/bindings/media/mediatek-vcodec.txt | 2 ++ 1 file changed, 2 insertions(+)
Acked-by: Rob Herring <robh@kernel.org> _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel