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diff --git a/Documentation/devicetree/bindings/arm/firmware/tlm,trusted-foundations.yaml b/Documentation/devicetree/bindings/arm/firmware/tlm,trusted-foundations.yaml
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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/arm/firmware/tlm,trusted-foundations.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Trusted Foundations
+
+description: |
+  Boards that use the Trusted Foundations secure monitor can signal its
+  presence by declaring a node compatible under the /firmware/ node
+
+maintainers:
+  - Stephen Warren <swarren@nvidia.com>
+
+properties:
+  $nodename:
+    const: trusted-foundations
+
+  compatible:
+    const: tlm,trusted-foundations
+
+  tlm,version-major:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: major version number of Trusted Foundations firmware
+
+  tlm,version-minor:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: minor version number of Trusted Foundations firmware
+
+required:
+  - compatible
+  - tlm,version-major
+  - tlm,version-minor
+
+additionalProperties: false
+
+examples:
+  - |
+    firmware {
+      trusted-foundations {
+        compatible = "tlm,trusted-foundations";
+        tlm,version-major = <2>;
+        tlm,version-minor = <8>;
+      };
+    };