[[PATCH] 4/9] Documentation-DTbindings-DMA-controller-of-AST2500

Commit Message

sudheer.v Oct. 17, 2018, 4:11 a.m. UTC

Signed-off-by: sudheer.v <[e-mail]>
---
 .../devicetree/bindings/dma/ast-uart-sdma.txt      | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/ast-uart-sdma.txt

Patch

diff --git a/Documentation/devicetree/bindings/dma/ast-uart-sdma.txt b/Documentation/devicetree/bindings/dma/ast-uart-sdma.txt
new file mode 100644
index 0000000..e770df2
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/ast-uart-sdma.txt
@@ -0,0 +1,23 @@ 
+* Aspeed Direct Memory Access (DMA) Controller for AST25XX
+
+
+* DMA controller
+
+Required properties:
+- compatible : Should be "aspeed,ast-uart-sdma"
+- reg : Should contain SDMA registers location and length
+- interrupts : Should contain SDMA interrupt
+- dma-channels: number of DMA channels in DMA controller
+
+Optional properties:
+
+Example
+                        ast_uart_sdma: uart_sdma@1e79e000 {
+                                compatible = "aspeed,ast-uart-sdma";
+                                reg = <0x1e79e000 0x400>;
+                                interrupts = <50>;
+                                #dma-cells = <1>;
+                                dma-channels = <8>;
+                                status = "disabled";
+                        };
+