dt-bindings: net: add generic ethernet-switch

The dsa.yaml bindings had references that can apply to non-dsa switches. To
prevent duplication of this information, keep the dsa-specific information
inside dsa.yaml and move the remaining generic information to the newly
created ethernet-switch.yaml.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Suggested-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/dsa/dsa.yaml

@@ -18,10 +18,9 @@ description:
 
 select: false
 
-properties:
-  $nodename:
-    pattern: "^(ethernet-)?switch(@.*)?$"
+$ref: /schemas/net/ethernet-switch.yaml#
 
+properties:
   dsa,member:
     minItems: 2
     maxItems: 2
@@ -32,32 +31,6 @@ properties:
       (single device hanging off a CPU port) must not specify this property
     $ref: /schemas/types.yaml#/definitions/uint32-array
 
-patternProperties:
-  "^(ethernet-)?ports$":
-    type: object
-    properties:
-      '#address-cells':
-        const: 1
-      '#size-cells':
-        const: 0
-
-    unevaluatedProperties: false
-
-    patternProperties:
-      "^(ethernet-)?port@[0-9]+$":
-        type: object
-        description: Ethernet switch ports
-
-        $ref: dsa-port.yaml#
-
-        additionalProperties: true
-
-oneOf:
-  - required:
-      - ports
-  - required:
-      - ethernet-ports
-
 additionalProperties: true
 
 $defs:

Documentation/devicetree/bindings/net/ethernet-switch.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/ethernet-switch.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic Ethernet Switch
+
+maintainers:
+  - Andrew Lunn <andrew@lunn.ch>
+  - Florian Fainelli <f.fainelli@gmail.com>
+  - Vladimir Oltean <olteanv@gmail.com>
+
+description:
+  Ethernet switches are multi-port Ethernet controllers. Each port has
+  its own number and is represented as its own Ethernet controller.
+  The minimum required functionality is to pass packets to software.
+  They may or may not be able to forward packets automonously between
+  ports.
+
+select: false
+
+properties:
+  $nodename:
+    pattern: "^(ethernet-)?switch(@.*)?$"
+
+patternProperties:
+  "^(ethernet-)?ports$":
+    type: object
+    unevaluatedProperties: false
+
+    properties:
+      '#address-cells':
+        const: 1
+      '#size-cells':
+        const: 0
+
+    patternProperties:
+      "^(ethernet-)?port@[0-9]+$":
+        type: object
+        description: Ethernet switch ports
+
+        $ref: ethernet-controller.yaml#
+
+        additionalProperties: true
+
+oneOf:
+  - required:
+      - ports
+  - required:
+      - ethernet-ports
+
+additionalProperties: true
+
+$defs:
+  base:
+    description: An ethernet switch without any extra port properties
+    $ref: '#/'
+
+    patternProperties:
+      "^(ethernet-)?port@[0-9]+$":
+        description: Ethernet switch ports
+        $ref: ethernet-controller.yaml#
+        unevaluatedProperties: false
+
+...

MAINTAINERS

@@ -14543,6 +14543,7 @@ M:	Florian Fainelli <f.fainelli@gmail.com>
 M:	Vladimir Oltean <olteanv@gmail.com>
 S:	Maintained
 F:	Documentation/devicetree/bindings/net/dsa/
+F:	Documentation/devicetree/bindings/net/ethernet-switch.yaml
 F:	drivers/net/dsa/
 F:	include/linux/dsa/
 F:	include/linux/platform_data/dsa.h