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diff --git a/Documentation/devicetree/bindings/rng/st,rng.txt b/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>;
+}