From: Jungo Lin <jungo.lin@mediatek.com>
To: <tfiga@chromium.org>, <hans.verkuil@cisco.com>,
<laurent.pinchart+renesas@ideasonboard.com>,
<matthias.bgg@gmail.com>, <mchehab@kernel.org>
Cc: Sean.Cheng@mediatek.com, Rynn.Wu@mediatek.com,
srv_heupstream@mediatek.com, holmes.chiou@mediatek.com,
ryan.yu@mediatek.com, Jerry-ch.Chen@mediatek.com,
frankie.chiu@mediatek.com, jungo.lin@mediatek.com,
sj.huang@mediatek.com, yuzhao@chromium.org,
christie.yu@mediatek.com, seraph.huang@mediatek.com,
zwisler@chromium.org, linux-mediatek@lists.infradead.org,
frederic.chen@mediatek.com, linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: [RFC V1 03/12] dt-bindings: mt8183: Added cam-smem dt-bindings
Date: Thu, 28 Mar 2019 17:56:38 +0800 [thread overview]
Message-ID: <1553767007-11909-4-git-send-email-jungo.lin@mediatek.com> (raw)
In-Reply-To: <1553767007-11909-1-git-send-email-jungo.lin@mediatek.com>
This patch adds the DT binding documentation for the shared memory
between Pass 1 unit of the camera ISP system and the co-processor
in Mediatek SoCs.
Signed-off-by: Jungo Lin <jungo.lin@mediatek.com>
---
.../bindings/media/mediatek,cam_smem.txt | 32 ++++++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/mediatek,cam_smem.txt
diff --git a/Documentation/devicetree/bindings/media/mediatek,cam_smem.txt b/Documentation/devicetree/bindings/media/mediatek,cam_smem.txt
new file mode 100644
index 0000000..d34006a
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/mediatek,cam_smem.txt
@@ -0,0 +1,32 @@
+Mediatek Camera ISP Pass 1 Shared Memory Device
+
+Mediatek Camera ISP Pass 1 Shared Memory Device is used to manage shared
+memory among CPU, Camera ISP Pass 1 hardware and coprocessor. The Camera
+ISP Pass 1 is a hardware unit for processing image signal from the image
+sensor. Camera ISP Pass 1 is responsible for RAW processing and 3A statistics.
+
+It is associated with a reserved memory region
+(Please see Documentation/devicetree/bindings/reserved-memory/mediatek,
+reserve-memory-cam_smem.txt) and and provides the context to
+allocate memory with dma addresses.
+
+Required properties:
+- compatible: must be "mediatek,mt8183-cam_smem" for MT8183.
+
+- iommus: shall point to the respective IOMMU block with master port
+ as argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
+ for details.
+
+- mediatek,larb: must contain the local arbiters in the current SoCs, see
+ Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt
+ for details.
+
+Example:
+ cam_smem: cam_smem {
+ compatible = "mediatek,mt8183-cam_smem";
+ mediatek,larb = <&larb3>,
+ <&larb6>;
+ iommus = <&iommu M4U_PORT_CAM_LSCI0>,
+ <&iommu M4U_PORT_CAM_LSCI1>,
+ <&iommu M4U_PORT_CAM_BPCI>;
+ };
--
1.9.1
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next prev parent reply other threads:[~2019-03-28 9:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-28 9:56 [RFC V1 00/12] meida: platform: mtk-isp: Add Mediatek ISP Pass 1 driver Jungo Lin
2019-03-28 9:56 ` [RFC V1 01/12] dt-bindings: mt8183: Add binding for ISP Pass 1 reserved memory Jungo Lin
2019-03-28 9:56 ` [RFC V1 02/12] dts: arm64: mt8183: Add ISP Pass 1 shared memory node Jungo Lin
2019-03-28 9:56 ` Jungo Lin [this message]
2019-03-28 9:56 ` [RFC V1 04/12] dt-bindings: mt8183: Added camera ISP Pass 1 Jungo Lin
2019-03-28 9:56 ` [RFC V1 05/12] dts: arm64: mt8183: Add ISP Pass 1 nodes Jungo Lin
2019-03-28 9:56 ` [RFC V1 06/12] media: platform: Add Mediatek ISP Pass 1 driver Kconfig Jungo Lin
2019-03-28 9:56 ` [RFC V1 07/12] media: platform: Add Mediatek ISP P1 image & meta formats Jungo Lin
2019-03-28 9:56 ` [RFC V1 08/12] media: platform: Add Mediatek ISP P1 private control Jungo Lin
2019-03-28 9:56 ` [RFC V1 09/12] media: platform: Add Mediatek ISP P1 V4L2 functions Jungo Lin
2019-03-28 9:56 ` [RFC V1 10/12] media: platform: Add Mediatek ISP P1 device driver Jungo Lin
2019-03-28 9:56 ` [RFC V1 11/12] media: platform: Add Mediatek ISP P1 SCP communication Jungo Lin
2019-03-28 9:56 ` [RFC V1 12/12] media: platform: Add Mediatek ISP P1 shared memory driver Jungo Lin
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