On Tue, 05 Jul 2022 10:48:02 +0100
"Russell King (Oracle)" [off-list ref] wrote:

Add a function for DSA to use to configure phylink, in the absence of
any other configuration, to a fixed link operating at the maximum
supported link speed.

This is needed so we can support phylink usage on CPU and DSA ports.

We use the default interface that the DSA driver provides (if any)
otherwise we attempt to find the first supported interface that gives
the maximum speed for the link.

Signed-off-by: Russell King (Oracle) <redacted>

Reviewed-by: Marek Behún <kabel@kernel.org>