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Message-Id: <20191015033157.14656-1-jassisinghbrar@gmail.com>
Date: Mon, 14 Oct 2019 22:31:57 -0500
From: jassisinghbrar@...il.com
To: dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org
Cc: vkoul@...nel.org, masami.hiramatsu@...aro.org,
orito.takao@...ionext.com, Jassi Brar <jaswinder.singh@...aro.org>,
Rob Herring <robh@...nel.org>
Subject: [PATCH v3 1/2] dt-bindings: milbeaut-m10v-xdmac: Add Socionext Milbeaut XDMAC bindings
From: Jassi Brar <jaswinder.singh@...aro.org>
Document the devicetree bindings for Socionext Milbeaut XDMAC
controller. Controller only supports Mem->Mem transfers. Number
of physical channels are determined by the number of irqs registered.
Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Jassi Brar <jaswinder.singh@...aro.org>
---
.../bindings/dma/milbeaut-m10v-xdmac.txt | 24 +++++++++++++++++++
1 file changed, 24 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/milbeaut-m10v-xdmac.txt
diff --git a/Documentation/devicetree/bindings/dma/milbeaut-m10v-xdmac.txt b/Documentation/devicetree/bindings/dma/milbeaut-m10v-xdmac.txt
new file mode 100644
index 000000000000..305791804062
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/milbeaut-m10v-xdmac.txt
@@ -0,0 +1,24 @@
+* Milbeaut AXI DMA Controller
+
+Milbeaut AXI DMA controller has only memory to memory transfer capability.
+
+* DMA controller
+
+Required property:
+- compatible: Should be "socionext,milbeaut-m10v-xdmac"
+- reg: Should contain DMA registers location and length.
+- interrupts: Should contain all of the per-channel DMA interrupts.
+ Number of channels is configurable - 2, 4 or 8, so
+ the number of interrupts specified should be {2,4,8}.
+- #dma-cells: Should be 1.
+
+Example:
+ xdmac0: dma-controller@...50000 {
+ compatible = "socionext,milbeaut-m10v-xdmac";
+ reg = <0x1c250000 0x1000>;
+ interrupts = <0 17 0x4>,
+ <0 18 0x4>,
+ <0 19 0x4>,
+ <0 20 0x4>;
+ #dma-cells = <1>;
+ };
--
2.20.1
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