From: Irui Wang <irui.wang@mediatek.com>
To: Alexandre Courbot <acourbot@chromium.org>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Tiffany Lin <tiffany.lin@mediatek.com>,
"Andrew-CT Chen" <andrew-ct.chen@mediatek.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Tomasz Figa <tfiga@google.com>,
Hsin-Yi Wang <hsinyi@chromium.org>,
Maoguang Meng <maoguang.meng@mediatek.com>,
"Longfei Wang" <longfei.wang@mediatek.com>,
Yong Wu <yong.wu@mediatek.com>
Cc: Yunfei Dong <yunfei.dong@mediatek.com>,
Fritz Koenig <frkoenig@chromium.org>,
Tzung-Bi Shih <tzungbi@chromium.org>,
Irui Wang <irui.wang@mediatek.com>, <linux-media@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<srv_heupstream@mediatek.com>,
<linux-mediatek@lists.infradead.org>,
<Project_Global_Chrome_Upstream_Group@mediatek.com>
Subject: [PATCH v4, 2/6] dt-bindings: media: mtk-vcodec: Add dma-ranges property
Date: Fri, 21 May 2021 15:01:35 +0800 [thread overview]
Message-ID: <20210521070139.20644-3-irui.wang@mediatek.com> (raw)
In-Reply-To: <20210521070139.20644-1-irui.wang@mediatek.com>
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 <irui.wang@mediatek.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 06db6837cefd..b7801e3c354a 100644
--- a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt
+++ b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt
@@ -22,6 +22,8 @@ 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 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.
--
2.18.0
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next prev parent reply other threads:[~2021-05-21 8:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-21 7:01 [PATCH v4,0/6] Support H264 4K on MT8192 Irui Wang
2021-05-21 7:01 ` [PATCH v4,1/6] media: mtk-vcodec: venc: remove redundant code Irui Wang
2021-05-21 8:05 ` Tzung-Bi Shih
2021-05-21 7:01 ` Irui Wang [this message]
2021-06-02 18:50 ` [PATCH v4,2/6] dt-bindings: media: mtk-vcodec: Add dma-ranges property Rob Herring
2021-05-21 7:01 ` [PATCH v4, 3/6] media: mtk-vcodec: Support 4GB~8GB range iova space for venc Irui Wang
2021-05-21 8:06 ` [PATCH v4,3/6] " Tzung-Bi Shih
2021-05-22 9:50 ` Yong Wu
2021-05-21 7:01 ` [PATCH v4, 4/6] dt-bindings: media: mtk-vcodec: Add binding for MT8192 VENC Irui Wang
2021-05-21 7:01 ` [PATCH v4,5/6] media: mtk-vcodec: Add MT8192 H264 venc driver Irui Wang
2021-05-21 8:06 ` Tzung-Bi Shih
2021-05-28 5:27 ` Dafna Hirschfeld
2021-06-03 3:55 ` Irui Wang
2021-05-21 7:01 ` [PATCH v4,6/6] media: mtk-vcodec: Support MT8192 H264 4K encoding Irui Wang
2021-05-21 8:06 ` [PATCH v4, 6/6] " Tzung-Bi Shih
2021-05-24 2:39 ` [PATCH v4,6/6] " Irui Wang
2021-05-28 5:57 ` [PATCH v4, 6/6] " Dafna Hirschfeld
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