dt-bindings: arm: ti: Convert K3 board/soc bindings to DT schema

Convert TI K3 Board/SoC bindings to DT schema format.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Suman Anna <s-anna@ti.com>
Link: https://lore.kernel.org/r/20200914162231.2535-3-lokeshvutla@ti.com

Documentation/devicetree/bindings/arm/ti/k3.txt

-Texas Instruments K3 Multicore SoC architecture device tree bindings
---------------------------------------------------------------------
-
-Platforms based on Texas Instruments K3 Multicore SoC architecture
-shall follow the following scheme:
-
-SoCs
-----
-
-Each device tree root node must specify which exact SoC in K3 Multicore SoC
-architecture it uses, using one of the following compatible values:
-
-- AM654
-  compatible = "ti,am654";
-
-- J721E
-  compatible = "ti,j721e";
-
-Boards
-------
-
-In addition, each device tree root node must specify which one or more
-of the following board-specific compatible values:
-
-- AM654 EVM
-  compatible = "ti,am654-evm", "ti,am654";

Documentation/devicetree/bindings/arm/ti/k3.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/ti/k3.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments K3 Multicore SoC architecture device tree bindings
+
+maintainers:
+  - Nishanth Menon <nm@ti.com>
+
+description: |
+  Platforms based on Texas Instruments K3 Multicore SoC architecture
+  shall have the following properties.
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+
+      - description: K3 AM654 SoC
+        items:
+          - enum:
+              - ti,am654-evm
+          - const: ti,am654
+
+      - description: K3 J721E SoC
+        items:
+          - const: ti,j721e
+...

MAINTAINERS

@@ -2636,7 +2636,7 @@ M:	Tero Kristo <t-kristo@ti.com>
 M:	Nishanth Menon <nm@ti.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Supported
-F:	Documentation/devicetree/bindings/arm/ti/k3.txt
+F:	Documentation/devicetree/bindings/arm/ti/k3.yaml
 F:	arch/arm64/boot/dts/ti/Makefile
 F:	arch/arm64/boot/dts/ti/k3-*
 F:	include/dt-bindings/pinctrl/k3.h