dt-bindings: crypto: Add node for True Random Number Generator

Add TRNG node compatible string and reg properities.

Signed-off-by: Mounika Botcha <mounika.botcha@amd.com>
Signed-off-by: Harsh Jain <h.jain@amd.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/Documentation/devicetree/bindings/crypto/xlnx,versal-trng.yaml b/Documentation/devicetree/bindings/crypto/xlnx,versal-trng.yaml
new file mode 100644 (file)
index 0000000..9dfb0b0
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/xlnx,versal-trng.yaml
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/crypto/xlnx,versal-trng.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx Versal True Random Number Generator Hardware Accelerator
+
+maintainers:
+  - Harsh Jain <h.jain@amd.com>
+  - Mounika Botcha <mounika.botcha@amd.com>
+
+description:
+  The Versal True Random Number Generator consists of Ring Oscillators as
+  entropy source and a deterministic CTR_DRBG random bit generator (DRBG).
+
+properties:
+  compatible:
+    const: xlnx,versal-trng
+
+  reg:
+    maxItems: 1
+
+required:
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    rng@f1230000 {
+        compatible = "xlnx,versal-trng";
+        reg = <0xf1230000 0x1000>;
+    };
+...