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diff --git a/Documentation/devicetree/bindings/serial/actions,owl-uart.txt b/Documentation/devicetree/bindings/serial/actions,owl-uart.txt
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+Actions Semi Owl UART
+
+Required properties:
+- compatible : "actions,s500-uart", "actions,owl-uart" for S500
+ "actions,s900-uart", "actions,owl-uart" for S900
+- reg : Offset and length of the register set for the device.
+- interrupts : Should contain UART interrupt.
+
+
+Example:
+
+ uart3: serial@b0126000 {
+ compatible = "actions,s500-uart", "actions,owl-uart";
+ reg = <0xb0126000 0x1000>;
+ interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+ };