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From: Frederic Chen <frederic.chen@mediatek.com>
To: <hans.verkuil@cisco.com>,
	<laurent.pinchart+renesas@ideasonboard.com>, <tfiga@chromium.org>,
	<matthias.bgg@gmail.com>, <mchehab@kernel.org>
Cc: Sean.Cheng@mediatek.com, Rynn.Wu@mediatek.com,
	srv_heupstream@mediatek.com, holmes.chiou@mediatek.com,
	Jerry-ch.Chen@mediatek.com, jungo.lin@mediatek.com,
	sj.huang@mediatek.com, christie.yu@mediatek.com,
	linux-mediatek@lists.infradead.org, frederic.chen@mediatek.com,
	linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org
Subject: [RFC PATCH V0 3/7] [media] dt-bindings: mt8183: Added DIP-SMEM dt-bindings
Date: Fri, 1 Feb 2019 19:21:27 +0800
Message-ID: <1549020091-42064-4-git-send-email-frederic.chen@mediatek.com> (raw)
In-Reply-To: <1549020091-42064-1-git-send-email-frederic.chen@mediatek.com>

This patch adds the DT binding documentation for the shared memory
between DIP (Digital Image Processing) unit of the camera ISP system
and the co-processor in Mediatek SoCs.

Signed-off-by: Frederic Chen <frederic.chen@mediatek.com>
---
 .../bindings/media/mediatek,dip_smem.txt           | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/mediatek,dip_smem.txt

diff --git a/Documentation/devicetree/bindings/media/mediatek,dip_smem.txt b/Documentation/devicetree/bindings/media/mediatek,dip_smem.txt
new file mode 100644
index 0000000..5533721
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/mediatek,dip_smem.txt
@@ -0,0 +1,29 @@
+Mediatek ISP Shared Memory Device
+
+Mediatek ISP Shared Memory Device is used to manage shared memory
+among CPU, ISP IPs and coprocessor. It is associated with a reserved
+memory region (Please see Documentation\devicetree\bindings\
+reserved-memory\mediatek,reserve-memory-isp_smem.txt) and
+and provide the context to allocate memory with dma addresses.
+
+Required properties:
+- compatible: Should be "mediatek,isp_smem"
+
+- iommus: should point to the respective IOMMU block with master port
+  as argument. Please set the ports which may be accessed
+  through the common path. You can see
+  Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
+  for the detail.
+
+- mediatek,larb: must contain the local arbiters in the current Socs.
+  Please set the larb of camsys for Pass 1 and imgsys for DIP, or both
+  if you are using all the camera function. You can see
+  Documentation/devicetree/bindings/memory-controllers/
+  mediatek,smi-larb.txt for the detail.
+
+Example:
+	isp_smem: isp_smem {
+		compatible = "mediatek,isp_smem";
+		mediatek,larb = <&larb5>;
+		iommus = <&iommu M4U_PORT_CAM_IMGI>;
+	};
-- 
1.9.1


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  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-01 11:21 [RFC PATCH V0 0/7] media: platform: Add support for Digital Image Processing (DIP) on mt8183 SoC Frederic Chen
2019-02-01 11:21 ` [RFC PATCH V0 1/7] [media] dt-bindings: mt8183: Add binding for DIP shared memory Frederic Chen
2019-02-09 15:59   ` Sakari Ailus
2019-02-09 18:17     ` Laurent Pinchart
2019-02-12  9:37       ` Frederic Chen
2019-02-13  3:41         ` Tomasz Figa
2019-02-01 11:21 ` [RFC PATCH V0 2/7] dts: arm64: mt8183: Add DIP shared memory node Frederic Chen
2019-02-01 11:21 ` Frederic Chen [this message]
2019-02-09 15:59   ` [RFC PATCH V0 3/7] [media] dt-bindings: mt8183: Added DIP-SMEM dt-bindings Sakari Ailus
2019-02-09 18:20     ` Laurent Pinchart
2019-02-12  9:50       ` Frederic Chen
2019-02-01 11:21 ` [RFC PATCH V0 4/7] [media] dt-bindings: mt8183: Added DIP dt-bindings Frederic Chen
2019-02-01 11:21 ` [RFC PATCH V0 5/7] dts: arm64: mt8183: Add DIP nodes Frederic Chen
2019-02-01 11:21 ` [RFC PATCH V0 6/7] media: platform: Add Mediatek DIP driver KConfig Frederic Chen
     [not found] ` <1549020091-42064-8-git-send-email-frederic.chen@mediatek.com>
2019-02-07 19:08   ` [RFC PATCH V0 7/7] [media] platform: mtk-isp: Add Mediatek DIP driver Brian Norris
     [not found]     ` <1550756198.11724.86.camel@mtksdccf07>
2019-02-23  6:18       ` Frederic Chen
2019-02-28  3:24         ` Brian Norris
2019-03-06 17:07           ` Frederic Chen
2019-03-14  8:46 ` [RFC PATCH V0 0/7] media: platform: Add support for Digital Image Processing (DIP) on mt8183 SoC Hans Verkuil

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