netdev - [PATCH v3 net-next 5/5] dt-bindings: net: dsa: Document dsa-tag-protocol property

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Message-Id: <20210420185311.899183-6-tobias@waldekranz.com>
Date:   Tue, 20 Apr 2021 20:53:11 +0200
From:   Tobias Waldekranz <tobias@...dekranz.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        olteanv@...il.com, netdev@...r.kernel.org, robh+dt@...nel.org,
        devicetree@...r.kernel.org
Subject: [PATCH v3 net-next 5/5] dt-bindings: net: dsa: Document dsa-tag-protocol property

The 'dsa-tag-protocol' is used to force a switch tree to use a
particular tag protocol, typically because the Ethernet controller
that it is connected to is not compatible with the default one.

Signed-off-by: Tobias Waldekranz <tobias@...dekranz.com>
---
 Documentation/devicetree/bindings/net/dsa/dsa.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.yaml b/Documentation/devicetree/bindings/net/dsa/dsa.yaml
index 8a3494db4d8d..16aa192c118e 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.yaml
@@ -70,6 +70,15 @@ patternProperties:
               device is what the switch port is connected to
             $ref: /schemas/types.yaml#/definitions/phandle
 
+          dsa-tag-protocol:
+            description:
+              Instead of the default, the switch will use this tag protocol if
+              possible. Useful when a device supports multiple protcols and
+              the default is incompatible with the Ethernet device.
+            enum:
+              - dsa
+              - edsa
+
           phy-handle: true
 
           phy-mode: true
-- 
2.25.1