[RFC PATCH V0 3/7] [media] dt-bindings: mt8183: Added FD-SMEM dt-bindings
DORMANTno replies
From: Jerry-ch Chen <hidden>
Date: 2019-02-20 07:48:09
Also in:
linux-devicetree, linux-media, linux-mediatek
Subsystem:
media input infrastructure (v4l/dvb), open firmware and flattened device tree bindings, the rest · Maintainers:
Mauro Carvalho Chehab, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
This patch adds the DT binding documentation for the shared memory between Face Detection unit of the camera system and the co-processor in Mediatek SoCs. Signed-off-by: Jerry-ch Chen <redacted> --- .../devicetree/bindings/media/mediatek,fd_smem.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/mediatek,fd_smem.txt
diff --git a/Documentation/devicetree/bindings/media/mediatek,fd_smem.txt b/Documentation/devicetree/bindings/media/mediatek,fd_smem.txt
new file mode 100644
index 0000000..6f7c836
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/mediatek,fd_smem.txt@@ -0,0 +1,28 @@ +Mediatek FD Shared Memory Device + +Mediatek FD Shared Memory Device is used to manage shared memory +among CPU, FD and coprocessor. It is associated with a reserved +memory region (Please see Documentation/devicetree/bindings/ +reserved-memory/mediatek,reserve-memory-fd_smem.txt) and +provide the context to allocate memory with dma addresses. + +Required properties: +- compatible: Shall be "mediatek,fd_smem" + +- iommus: Shall 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 imgsys for FD if you are using FD function. + You can see Documentation/devicetree/bindings/memory-controllers/ + mediatek,smi-larb.txt for the detail. + +Example: + fd_smem: fd_smem { + compatible = "mediatek,fd_smem"; + mediatek,larb = <&larb5>; + iommus = <&iommu M4U_PORT_CAM_IMGI>; + };
--
1.9.1
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