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Message-Id: <20230112175613.18211-9-colin.foster@in-advantage.com>
Date:   Thu, 12 Jan 2023 07:56:11 -1000
From:   Colin Foster <colin.foster@...advantage.com>
To:     linux-renesas-soc@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, netdev@...r.kernel.org
Cc:     John Crispin <john@...ozen.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Marek Vasut <marex@...x.de>,
        Sean Wang <sean.wang@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        nç ÜNAL <arinc.unal@...nc9.com>,
        Clément Léger <clement.leger@...tlin.com>,
        Alvin Šipraga <alsi@...g-olufsen.dk>,
        Linus Walleij <linus.walleij@...aro.org>,
        UNGLinuxDriver@...rochip.com,
        Woojung Huh <woojung.huh@...rochip.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Vladimir Oltean <olteanv@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        George McCollister <george.mccollister@...il.com>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v7 net-next 08/10] 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@...advantage.com>
Suggested-by: Vladimir Oltean <olteanv@...il.com>
Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---

v5 -> v7
  * No change

v4 -> v5
  * Add Rob Reviewed tag
  * Remove "^(ethernet-)?switch(@.*)?$" from dsa.yaml in this patch, instead
    of dt-bindings: net: dsa: allow additional ethernet-port properties
  * Change Vivien to Vladimir to sync with MAINTAINERS
  * Remove quotes around ref: /schemas/net/ethernet-switch.yaml#

v3 -> v4
  * Update ethernet-ports and ethernet-port nodes to match what the new
    dsa.yaml has. Namely:
      "unevaluatedProperties: false" instead of "additionalProperties: true"
      "additionalProperties: true" instead of "unevaluatedProperties: true"
    for ethernet-ports and ethernet-port, respectively.
  * Add Florian Reviewed tag

v2 -> v3
  * Change ethernet-switch.yaml title from "Ethernet Switch Device
    Tree Bindings" to "Generic Ethernet Switch"
  * Rework ethernet-switch.yaml description
  * Add base defs structure for switches that don't have any additional
    properties.
  * Add "additionalProperties: true" under "^(ethernet-)?ports$" node
  * Correct port reference from /schemas/net/dsa/dsa-port.yaml# to
    ethernet-controller.yaml#

v1 -> v2
  * No net change, but deletions from dsa.yaml included the changes for
    "addionalProperties: true" under ports and "unevaluatedProperties:
    true" under port.

---
 .../devicetree/bindings/net/dsa/dsa.yaml      | 31 +--------
 .../bindings/net/ethernet-switch.yaml         | 66 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 3 files changed, 69 insertions(+), 29 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/net/ethernet-switch.yaml

diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.yaml b/Documentation/devicetree/bindings/net/dsa/dsa.yaml
index 7487ac0d6bb9..8d971813bab6 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.yaml
+++ b/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
 
 $defs:
diff --git a/Documentation/devicetree/bindings/net/ethernet-switch.yaml b/Documentation/devicetree/bindings/net/ethernet-switch.yaml
new file mode 100644
index 000000000000..2466d05f9a6f
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ethernet-switch.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$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@...n.ch>
+  - Florian Fainelli <f.fainelli@...il.com>
+  - Vladimir Oltean <olteanv@...il.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
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index d346d586ea1a..b582e0835b46 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14542,6 +14542,7 @@ M:	Florian Fainelli <f.fainelli@...il.com>
 M:	Vladimir Oltean <olteanv@...il.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
-- 
2.25.1

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