netdev - Re: [PATCH net-next 2/2] r8169: add support for RTL8127ATF (Fiber SFP)

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Message-ID: <aWA7b-8ouKIm7HFU@google.com>
Date: Thu, 8 Jan 2026 23:19:11 +0000
From: Fabio Baltieri <fabio.baltieri@...il.com>
To: Heiner Kallweit <hkallweit1@...il.com>
Cc: Andrew Lunn <andrew@...n.ch>, Andrew Lunn <andrew+netdev@...n.ch>,
	Russell King - ARM Linux <linux@...linux.org.uk>,
	Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>,
	David Miller <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Vladimir Oltean <vladimir.oltean@....com>,
	Michael Klein <michael@...sekall.de>,
	Daniel Golle <daniel@...rotopia.org>,
	Realtek linux nic maintainers <nic_swsd@...ltek.com>,
	Aleksander Jan Bajkowski <olek2@...pl>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 2/2] r8169: add support for RTL8127ATF (Fiber
 SFP)

On Thu, Jan 08, 2026 at 09:28:20PM +0100, Heiner Kallweit wrote:
> RTL8127ATF supports a SFP+ port for fiber modules (10GBASE-SR/LR/ER/ZR and
> DAC). The list of supported modes was provided by Realtek. According to the
> r8127 vendor driver also 1G modules are supported, but this needs some more
> complexity in the driver, and only 10G mode has been tested so far.
> Therefore mainline support will be limited to 10G for now.
> The SFP port signals are hidden in the chip IP and driven by firmware.
> Therefore mainline SFP support can't be used here.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>

Tested-by: Fabio Baltieri <fabio.baltieri@...il.com>

Thanks!
Fabio