On Wed, Sep 29, 2021 at 02:52:26PM +0300, Vladimir Oltean wrote: > The internal Ethernet switch suffers from erratum A-050484 ("Ethernet > flow control not functional on L2 switch NPI port when XFH is used"). > XFH stands for "Extraction Frame Header" - which basically means the > default "ocelot" DSA tagging protocol. > > However, the switch supports one other tagging protocol - "ocelot-8021q", > and this is not subject to the erratum above. So describe the hardware > ability to pass PAUSE frames in the device tree, and let the driver > figure out whether it should use flow control on the CPU port or not, > depending on whether the "ocelot" or "ocelot-8021q" tagging protocol is > being used. > > Signed-off-by: Vladimir Oltean <vladimir.oltean@xxxxxxx> Applied, thanks!