dt-bindings: marvell: a38x: convert soc compatibles to yaml

Convert the existing txt binding for armada-38x socs to DT schema
format.

The current bindings documentation for armada-38x are only listing SoCs,
but no actual boards. Only actual boards should be listed.

Replace the dropped entries with some actual baords that already have
valid compatibles in-tree:
- armada 380 netgear switch
- armada 385 marvell development boards
- armada 388 development board

Signed-off-by: Josua Mayer <josua@solid-run.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

Documentation/devicetree/bindings/arm/marvell/armada-38x.txt

@@ -1,27 +0,0 @@
-Marvell Armada 38x Platforms Device Tree Bindings
--------------------------------------------------
-
-Boards with a SoC of the Marvell Armada 38x family shall have the
-following property:
-
-Required root node property:
-
- - compatible: must contain "marvell,armada380"
-
-In addition, boards using the Marvell Armada 385 SoC shall have the
-following property before the previous one:
-
-Required root node property:
-
-compatible: must contain "marvell,armada385"
-
-In addition, boards using the Marvell Armada 388 SoC shall have the
-following property before the previous one:
-
-Required root node property:
-
-compatible: must contain "marvell,armada388"
-
-Example:
-
-compatible = "marvell,a385-rd", "marvell,armada385", "marvell,armada380";

Documentation/devicetree/bindings/arm/marvell/armada-38x.yaml

@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/marvell/armada-38x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Armada 38x Platforms
+
+maintainers:
+  - Gregory CLEMENT <gregory.clement@bootlin.com>
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+
+      - description:
+          Netgear Armada 380 GS110EM Managed Switch.
+        items:
+          - const: netgear,gs110emx
+          - const: marvell,armada380
+
+      - description:
+          Marvell Armada 385 Development Boards.
+        items:
+          - enum:
+              - marvell,a385-db-amc
+              - marvell,a385-db-ap
+          - const: marvell,armada385
+          - const: marvell,armada380
+
+      - description:
+          Marvell Armada 388 Development Boards.
+        items:
+          - enum:
+              - marvell,a388-gp
+          - const: marvell,armada388
+          - const: marvell,armada385
+          - const: marvell,armada380
+
+additionalProperties: true