dt-bindings: arm: Convert cavium,thunder-88xx to DT schema

Convert Cavium Thunder-88xx boards to DT schema format. There's not any
defined board compatibles in this case.

Link: https://lore.kernel.org/r/20250806212741.1633917-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/arm/cavium,thunder-88xx.yaml b/Documentation/devicetree/bindings/arm/cavium,thunder-88xx.yaml
new file mode 100644 (file)
index 0000000..d7c8131
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/cavium,thunder-88xx.yaml
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/cavium,thunder-88xx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cavium Thunder 88xx SoC
+
+maintainers:
+  - Robert Richter <rric@kernel.org>
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    items:
+      - const: cavium,thunder-88xx
+
+additionalProperties: true

diff --git a/Documentation/devicetree/bindings/arm/cavium-thunder.txt b/Documentation/devicetree/bindings/arm/cavium-thunder.txt
deleted file mode 100644 (file)
index 6f63a58..0000000
--- a/Documentation/devicetree/bindings/arm/cavium-thunder.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-Cavium Thunder platform device tree bindings
---------------------------------------------
-
-Boards with Cavium's Thunder SoC shall have following properties.
-
-Root Node
----------
-Required root node properties:
-
-  - compatible = "cavium,thunder-88xx";