linux-kernel - Re: [PATCH net-next 2/2] net: phy: broadcom: add 1000Base-X support for BCM54616S

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Message-ID: <ed0a7455-1999-90c2-6d7c-a6587542c804@fb.com>
Date:   Wed, 31 Jul 2019 00:15:48 +0000
From:   Tao Ren <taoren@...com>
To:     Andrew Lunn <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>
CC:     Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        "Arun Parameswaran" <arun.parameswaran@...adcom.com>,
        Justin Chen <justinpopo6@...il.com>,
        netdev <netdev@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Andrew Jeffery <andrew@...id.au>,
        "openbmc@...ts.ozlabs.org" <openbmc@...ts.ozlabs.org>
Subject: Re: [PATCH net-next 2/2] net: phy: broadcom: add 1000Base-X support
 for BCM54616S

On 7/30/19 6:17 AM, Andrew Lunn wrote:
>> Again, I don't think Linux has generic support for overwriting (or
>> even describing) the operating mode of a PHY, although maybe that's a
>> direction we would want to push the discussion towards. RGMII to
>> copper, RGMII to fiber, SGMII to copper, copper to fiber (media
>> converter), even RGMII to SGMII (RTL8211FS supports this) - lots of
>> modes, and this is only for gigabit PHYs...
> 
> This is something Russell King has PHYLINK patches for, which have not
> yet been merged. There are some boards which use a PHY as a media
> converter, placed between the MAC and an SFP.

Thank you Andrew. Let me see if the operating mode can be auto-detected on BCM54616S chip, and I will update back soon.

Thanks,

Tao