linux-kernel - [PATCH 1/5] dt-bindings: media: mtk-vcodec: Add dma-ranges property

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Message-ID: <20210203083752.12586-2-irui.wang@mediatek.com>
Date:   Wed, 3 Feb 2021 16:37:48 +0800
From:   Irui Wang <irui.wang@...iatek.com>
To:     Alexandre Courbot <acourbot@...omium.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Fritz Koenig <frkoenig@...omium.org>,
        Tzung-Bi Shih <tzungbi@...omium.org>
CC:     Maoguang Meng <maoguang.meng@...iatek.com>,
        Longfei Wang <longfei.wang@...iatek.com>,
        Yunfei Dong <yunfei.dong@...iatek.com>,
        Irui Wang <irui.wang@...iatek.com>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>, <linux-mediatek@...ts.infradead.org>
Subject: [PATCH 1/5] dt-bindings: media: mtk-vcodec: Add dma-ranges property

Adds dma-ranges property for DMA addresses translation.

Signed-off-by: Irui Wang <irui.wang@...iatek.com>
---
 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.
 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