[RFC,v3,07/16] dmaengine: edma: Add TI EDMA device tree binding

Commit Message

Matt Porter Oct. 18, 2012, 1:26 p.m. UTC

The binding definition is based on the generic DMA controller
binding.

Signed-off-by: Matt Porter <[e-mail]>
---
 Documentation/devicetree/bindings/dma/ti-edma.txt |   51 +++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/ti-edma.txt

Patch

diff --git a/Documentation/devicetree/bindings/dma/ti-edma.txt b/Documentation/devicetree/bindings/dma/ti-edma.txt
new file mode 100644
index 0000000..3344345
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/ti-edma.txt
@@ -0,0 +1,51 @@ 
+TI EDMA
+
+Required properties:
+- compatible : "ti,edma3"
+- ti,hwmods: Name of the hwmods associated to the EDMA
+- ti,edma-regions: Number of regions
+- ti,edma-slots: Number of slots
+- ti,edma-queue-tc-map: List of transfer control to queue mappings
+- ti,edma-queue-priority-map: List of queue priority mappings
+- ti,edma-default-queue: Default queue value
+
+Optional properties:
+- ti,edma-reserved-channels: List of reserved channel regions
+- ti,edma-reserved-slots: List of reserved slot regions
+- ti,edma-xbar-event-map: Crossbar event to channel map
+
+Example:
+
+edma: edma@49000000 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	reg = <0x49000000 0x10000>;
+	interrupt-parent = <&intc>;
+	interrupts = <12 13 14>;
+	compatible = "ti,edma3";
+	ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2";
+	#dma-cells = <1>;
+	dma-channels = <64>;
+	ti,edma-regions = <4>;
+	ti,edma-slots = <256>;
+	ti,edma-reserved-channels = <0  2
+				     14 2
+				     26 6
+				     48 4
+				     56 8>;
+	ti,edma-reserved-slots = <0  2
+				  14 2
+				  26 6
+				  48 4
+				  56 8
+				  64 127>;
+	ti,edma-queue-tc-map = <0 0
+				1 1
+				2 2>;
+	ti,edma-queue-priority-map = <0 0
+				      1 1
+				      2 2>;
+	ti,edma-default-queue = <0>;
+	ti,edma-xbar-event-map = <1 12
+				  2 13>;
+};