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-rw-r--r--Documentation/networking/dsa/dsa.rst6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/networking/dsa/dsa.rst b/Documentation/networking/dsa/dsa.rst
index 76b0bc1abbae..83c1a02376c8 100644
--- a/Documentation/networking/dsa/dsa.rst
+++ b/Documentation/networking/dsa/dsa.rst
@@ -600,6 +600,12 @@ Switch configuration
upstream switch, in case there are hardware limitations in terms of supported
tag formats.
+- ``change_tag_protocol``: when the default tagging protocol has compatibility
+ problems with the master or other issues, the driver may support changing it
+ at runtime, either through a device tree property or through sysfs. In that
+ case, further calls to ``get_tag_protocol`` should report the protocol in
+ current use.
+
- ``setup``: setup function for the switch, this function is responsible for setting
up the ``dsa_switch_ops`` private structure with all it needs: register maps,
interrupts, mutexes, locks, etc. This function is also expected to properly