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diff --git a/Documentation/devicetree/bindings/serial/lantiq_asc.txt b/Documentation/devicetree/bindings/serial/lantiq_asc.txt
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+++ b/Documentation/devicetree/bindings/serial/lantiq_asc.txt
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+Lantiq SoC ASC serial controller
+
+Required properties:
+- compatible : Should be "lantiq,asc"
+- reg : Address and length of the register set for the device
+- interrupts: the 3 (tx rx err) interrupt numbers. The interrupt specifier
+  depends on the interrupt-parent interrupt controller.
+
+Example:
+
+asc1: serial@E100C00 {
+        compatible = "lantiq,asc";
+        reg = <0xE100C00 0x400>;
+        interrupt-parent = <&icu0>;
+        interrupts = <112 113 114>;
+};