From: jassisinghbrar@gmail.com
To: dmaengine@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: vkoul@kernel.org, robh+dt@kernel.org,
Jassi Brar <jaswinder.singh@linaro.org>
Subject: [PATCH 1/2] dt-bindings: milbeaut-m10v-xdmac: Add Socionext Milbeaut XDMAC bindings
Date: Sun, 18 Aug 2019 00:22:24 -0500 [thread overview]
Message-ID: <20190818052224.17857-1-jassisinghbrar@gmail.com> (raw)
In-Reply-To: <20190818052154.17789-1-jassisinghbrar@gmail.com>
From: Jassi Brar <jaswinder.singh@linaro.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.
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.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..1f15512e3f19
--- /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 specfied should be {2,4,8}.
+- #dma-cells: Should be 1.
+
+Example:
+ xdmac0: dma-controller@1c250000 {
+ compatible = "socionext,milbeaut-m10v-xdmac";
+ reg = <0x1c250000 0x1000>;
+ interrupts = <0 17 0x4>,
+ <0 18 0x4>,
+ <0 19 0x4>,
+ <0 20 0x4>;
+ #dma-cells = <1>;
+ };
--
2.17.1
next prev parent reply other threads:[~2019-08-18 5:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-18 5:21 [PATCH 0/2] Add support for AXI DMA controller on Milbeaut series jassisinghbrar
2019-08-18 5:22 ` jassisinghbrar [this message]
2019-08-27 16:31 ` [PATCH 1/2] dt-bindings: milbeaut-m10v-xdmac: Add Socionext Milbeaut XDMAC bindings Rob Herring
2019-09-04 6:00 ` Vinod Koul
2019-08-18 5:22 ` [PATCH 2/2] dmaengine: milbeaut-xdmac: Add XDMAC driver for Milbeaut platforms jassisinghbrar
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