[PATCH 3/4] doc: uartlite: Add binding for the driver

[Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>]

Add uartlite binding for the driver

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
---
 .../bindings/serial/xlnx,opb-uartlite.txt          | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.txt

diff --git a/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.txt b/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.txt
new file mode 100644
index 0000000..df8aba0
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.txt
@@ -0,0 +1,24 @@
+Xilinx Axi Uartlite controller Device Tree Bindings
+---------------------------------------------------------
+
+Required properties:
+- compatible           : Can be either of
+                               "xlnx,xps-uartlite-1.00.a"
+                               "xlnx,opb-uartlite-1.00.b"
+- reg                  : Physical base address and size of the Axi Uartlite
+                         registers map.
+- interrupts           : Property with a value describing the interrupt
+                         number.
+- interrupt-parent     : Must be core interrupt controller.
+
+Optional properties:
+- port-number          : Set Uart port number
+
+Example:
+serial@800C0000 {
+       compatible = "xlnx,xps-uartlite-1.00.a";
+       reg = <0x0 0x800c0000 0x10000>;
+       interrupt-parent = <&gic>;
+       interrupts = <0x0 0x6e 0x1>;
+       port-number = <0>;
+};
--
2.7.4

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