netdev - [PATCH net-next 0/3] net: phy: dp83869: Support 1000Base-X SFP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251104-sfp-1000basex-v1-0-f461f170c74e@bootlin.com>
Date: Tue, 04 Nov 2025 09:50:33 +0100
From: Romain Gantois <romain.gantois@...tlin.com>
To: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>, 
 Russell King <linux@...linux.org.uk>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: Maxime Chevallier <maxime.chevallier@...tlin.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Romain Gantois <romain.gantois@...tlin.com>
Subject: [PATCH net-next 0/3] net: phy: dp83869: Support 1000Base-X SFP

Hi everyone,

This series adds support for using the DP83869 PHY as a transceiver between an
RGMII upper MAC and a downstream 1000Base-X SFP module.

Patch 1 and 2 of the series are necessary to get the PHY to properly switch its
operating mode to RGMII<->1000Base-X when an SFP module is inserted.

Patch 3 adds the actual SFP support, with only 1000Base-X modules supported for
now.

Side note: A wider-scoped series adding general SFP support to this PHY was sent
some time ago, but was not pursued, mainly due to complications with SGMII
support:

https://lore.kernel.org/netdev/20250514-dp83869-1000basex-v1-0-1bdb3c9c3d63@bootlin.com/

Best Regards,

Romain

Signed-off-by: Romain Gantois <romain.gantois@...tlin.com>
---
Romain Gantois (3):
      net: phy: dp83869: Restart PHY when configuring mode
      net: phy: dp83869: ensure FORCE_LINK_GOOD is cleared
      net: phy: dp83869: Support 1000Base-X SFP

 drivers/net/phy/dp83869.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
---
base-commit: 32dbca2817e3611165636113f246bed30ef21b3d
change-id: 20251103-sfp-1000basex-a05c78484a54

Best regards,
-- 
Romain Gantois <romain.gantois@...tlin.com>