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diff --git a/kernel/Documentation/devicetree/bindings/rng/st,rng.txt b/kernel/Documentation/devicetree/bindings/rng/st,rng.txt
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+STMicroelectronics HW Random Number Generator
+----------------------------------------------
+
+Required parameters:
+compatible : Should be "st,rng"
+reg : Base address and size of IP's register map.
+clocks : Phandle to device's clock (See: ../clocks/clock-bindings.txt)
+
+Example:
+
+rng@fee80000 {
+ compatible = "st,rng";
+ reg = <0xfee80000 0x1000>;
+ clocks = <&clk_sysin>;
+}