dt-bindings: mips: convert Ralink SoCs and boards to schema

Convert Ralink SoCs and boards bindings to YAML schema.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20211019041659.15761-1-sergio.paracuellos@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/mips/ralink.txt

-Ralink MIPS SoC device tree bindings
-
-1. SoCs
-
-Each device tree must specify a compatible value for the Ralink SoC
-it uses in the compatible property of the root node. The compatible
-value must be one of the following values:
-
-  ralink,rt2880-soc
-  ralink,rt3050-soc
-  ralink,rt3052-soc
-  ralink,rt3350-soc
-  ralink,rt3352-soc
-  ralink,rt3883-soc
-  ralink,rt5350-soc
-  ralink,mt7620a-soc
-  ralink,mt7620n-soc
-  ralink,mt7628a-soc
-  ralink,mt7688a-soc
-
-2. Boards
-
-GARDENA smart Gateway (MT7688)
-
-This board is based on the MediaTek MT7688 and equipped with 128 MiB
-of DDR and 8 MiB of flash (SPI NOR) and additional 128MiB SPI NAND
-storage.
-
-------------------------------
-Required root node properties:
-- compatible = "gardena,smart-gateway-mt7688", "ralink,mt7688a-soc",
-		"ralink,mt7628a-soc";

Documentation/devicetree/bindings/mips/ralink.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mips/ralink.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ralink SoC based Platforms Device Tree Bindings
+
+maintainers:
+  - Sergio Paracuellos <sergio.paracuellos@gmail.com>
+
+description: |
+    Boards with a Ralink SoC shall have the following properties.
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - description: Boards with Ralink RT2880 SoC
+        items:
+          - enum:
+              - ralink,rt2880-eval-board
+          - const: ralink,rt2880-soc
+
+      - description: Boards with Ralink RT3050 SoC
+        items:
+          - const: ralink,rt3050-soc
+
+      - description: Boards with Ralink RT3052 SoC
+        items:
+          - enum:
+              - ralink,rt3052-eval-board
+          - const: ralink,rt3052-soc
+
+      - description: Boards with Ralink RT3350 SoC
+        items:
+          - const: ralink,rt3350-soc
+
+      - description: Boards with Ralink RT3352 SoC
+        items:
+          - const: ralink,rt3352-soc
+
+      - description: Boards with Ralink RT3383 SoC
+        items:
+          - enum:
+              - ralink,rt3883-eval-board
+          - const: ralink,rt3383-soc
+
+      - description: Boards with Ralink RT5350 SoC
+        items:
+          - const: ralink,rt5350-soc
+
+      - description: Boards with Mediatek/Ralink MT7620A SoC
+        items:
+          - enum:
+              - ralink,mt7620a-eval-board
+          - const: ralink,mt7620a-soc
+
+      - description: Boards with Mediatek/Ralink MT7620N SoC
+        items:
+          - const: ralink,mt7620n-soc
+
+      - description: Boards with Mediatek/Ralink MT7628A SoC
+        items:
+          - enum:
+              - onion,omega2+
+              - vocore,vocore2
+          - const: ralink,mt7628a-soc
+
+      - description: Boards with Mediatek/Ralink MT7688A SoC
+        items:
+          - enum:
+              - gardena,smart-gateway-mt7688
+              - onion,omega2+
+          - const: ralink,mt7628a-soc
+
+      - description: Boards with Mediatek/Ralink MT7621 SoC
+        items:
+          - enum:
+              - gnubee,gb-pc1
+              - gnubee,gb-pc2
+          - const: mediatek,mt7621-soc
+
+additionalProperties: true
+
+...