linux-kernel - Re: [PATCH v2] net: dsa: ksz8795: adjust CPU link to host interface

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Message-ID: <20201201204516.GA2324545@lunn.ch>
Date:   Tue, 1 Dec 2020 21:45:16 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Jean Pihet <jean.pihet@...oldbits.com>
Cc:     netdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Ryan Barnett <ryan.barnett@...kwellcollins.com>,
        Conrad Ratschan <conrad.ratschan@...kwellcollins.com>,
        Hugo Cornelis <hugo.cornelis@...ensium.com>,
        Arnout Vandecappelle <arnout.vandecappelle@...ensium.com>
Subject: Re: [PATCH v2] net: dsa: ksz8795: adjust CPU link to host interface

> Configure the host port of the switch to match the host interface
> settings. This is useful when the switch is directly connected to the
> host MAC interface.

Why do you need this when no other board does? Why is your board
special?

As i said before, i'm guessing your board has back to back PHYs
between the SoC and the switch and nobody else does. Is that the
reason why? Without this, nothing is configuring the switch MAC to the
results of the auto-neg between the two PHYs?

Or am i completely wrong?

   Andrew