netdev - Re: [PATCH net] net: dsa: mv88e6xxx: Set correct interface mode for CPU/DSA ports

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Message-ID: <20190528131705.GB18059@lunn.ch>
Date:   Tue, 28 May 2019 15:17:05 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Greg Ungerer <gerg@...nel.org>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net] net: dsa: mv88e6xxx: Set correct interface mode for
 CPU/DSA ports

> My hardware has the CPU port on 9, and it is SGMII. The existing working
> devicetree setup I used is:
> 
>                        port@9 {
>                                 reg = <9>;
>                                 label = "cpu";
>                                 ethernet = <&eth0>;
>                                 fixed-link {
>                                         speed = <1000>;
>                                         full-duplex;
>                                 };
>                         };

Hi Greg

You might need to set the phy-mode to SGMII. I'm surprised you are
using SGMII, not 1000Base-X. Do you have a PHY connected?

      Andrew