Subject: Re: [PATCH v4,2/6] dt-bindings: media: mtk-vcodec: Add dma-ranges property

From: Rob Herring <[email-masked]>
Date: Wed, 2 Jun 2021 13:50:17 -0500

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 <[email-masked]>
> ---
>  Documentation/devicetree/bindings/media/mediatek-vcodec.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 

Acked-by: Rob Herring <[email-masked]>

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