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authorVladimir Oltean <vladimir.oltean@nxp.com>2022-07-16 21:53:34 +0300
committerDavid S. Miller <davem@davemloft.net>2022-07-18 14:44:37 +0300
commitd6a0336addd47af8869953a480e44a63726fad8f (patch)
tree4c94d0d22da6e0637e5ce37584afc5d784abffe0 /Documentation
parentc56313a42aaa0c353af6425aed63719823ccfc32 (diff)
downloadlinux-d6a0336addd47af8869953a480e44a63726fad8f.tar.xz
docs: net: dsa: document change_tag_protocol
Support for changing the tagging protocol was added without this operation being documented; do so now. Fixes: 53da0ebaad10 ("net: dsa: allow changing the tag protocol via the "tagging" device attribute") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
-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