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

Message ID 20210420185311.899183-6-tobias@waldekranz.com (mailing list archive)
State Accepted
Commit eb78cacebaf2ff76e787c8b8a0d70eacf6c4fa4e
Delegated to: Netdev Maintainers
Headers show
Series net: dsa: Allow default tag protocol to be overridden from DT | expand

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Commit Message

Tobias Waldekranz April 20, 2021, 6:53 p.m. UTC
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@waldekranz.com>
---
 Documentation/devicetree/bindings/net/dsa/dsa.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

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