[PATCH v3 1/4] crypto: jz4780-rng: Add JZ4780 PRNG devicetree binding documentation

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Add devicetree bindings for hardware pseudo random number generator
present in Ingenic JZ4780 SoC.

Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@xxxxxxxxx>
---
Changes in v3:
* Create a cgublock node with "simple-bus" compatible
* Make CGU and RNG node as children of cgublock node.

Changes in v2:                                                                   
* Add "syscon" in CGU node's compatible section                                  
* Make RNG child node of CGU.                                                    

 .../devicetree/bindings/rng/ingenic,jz4780-rng.txt  | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rng/ingenic,jz4780-rng.txt

diff --git a/Documentation/devicetree/bindings/rng/ingenic,jz4780-rng.txt b/Documentation/devicetree/bindings/rng/ingenic,jz4780-rng.txt
new file mode 100644
index 0000000..765df9c
--- /dev/null
+++ b/Documentation/devicetree/bindings/rng/ingenic,jz4780-rng.txt
@@ -0,0 +1,21 @@
+Ingenic jz4780 RNG driver
+
+Required properties:
+- compatible : Should be "ingenic,jz4780-rng"
+
+Example:
+
+cgublock {
+	compatible = "simple-bus";
+
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	reg = <0x10000000 0x100>;
+	ranges;
+
+	rng: rng@d8 {
+		compatible = "ingenic,jz4780-rng";
+		reg = <0x100000d8 0x8>;
+	};
+};
-- 
2.10.0




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