netdev - Re: [PATCH net-next v2 11/14] net: phylink: delay MAC configuration for copper SFP modules

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Date:   Tue, 10 Dec 2019 18:14:43 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Russell King <rmk+kernel@...linux.org.uk>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2 11/14] net: phylink: delay MAC configuration
 for copper SFP modules

On Mon, Dec 09, 2019 at 03:19:22PM +0000, Russell King wrote:
> Knowing whether we need to delay the MAC configuration because a module
> may have a PHY is useful to phylink to allow NBASE-T modules to work on
> systems supporting no more than 2.5G speeds.
> 
> This commit allows us to delay such configuration until after the PHY
> has been probed by recording the parsed capabilities, and if the module
> may have a PHY, doing no more until the module_start() notification is
> called.  At that point, we either have a PHY, or we don't.
> 
> We move the PHY-based setup a little later, and use the PHYs support
> capabilities rather than the EEPROM parsed capabilities to determine
> whether we can support the PHY.
> 
> Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew