From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 87A432BEC3F for ; Wed, 27 May 2026 08:19:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779869964; cv=none; b=Ys/PeVlLN4Uvbg2ZFiQhlyl6Xrt8ujXq28qAAfdjqVEohyFYW06Obp7fxlV4BjUD8AAb+N5EGO0z6YvG9k+IJSc3J7f8xiuoWpDmktyENIfkIlP9el089bpCIp6UUFHpJKVpu6JbqgNFWmiMXd1aOrydPEaYqVFF0BWgpQtYzvE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779869964; c=relaxed/simple; bh=+giG7RKoZksKXexKmtsslBsIAO/RPNABifR/IZR7+iI=; h=Mime-Version:Content-Type:Date:Message-Id:Subject:Cc:From:To; b=uuKJ5qV2dV/7wiBSZ1m2lXJeK9jlsQD7fmry/JY7d4o3esqG/S5rSy4+uj+Z5VUQu8cMEkYOQDZynaqqOopG51azMW7A52r+TLzkfmUs45PM3vVWNjZli5iYPQ9g6wFdFldG8h97wCdJCSxZe5mYCsoXRalfOhGZoskitYrENgk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ODlbXsTw; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ODlbXsTw" Received: by smtp.kernel.org (Postfix) with UTF8SMTPSA id 91B6E1F000E9; Wed, 27 May 2026 08:19:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779869963; bh=+giG7RKoZksKXexKmtsslBsIAO/RPNABifR/IZR7+iI=; h=Date:Subject:Cc:From:To; b=ODlbXsTwIiUf+Nf3abCrwsXYIZHS9AhOLIBfbsCum11DGcTXF+6TA3kn1JYPvR0EW zcV8oif512yTspUh/NXm+NogRUSClxlif2sSCcwqbnl7gpyWRKulFdft19+0wRc29l nTpiMpVAyEKtQ4wAcvpZlW8iNfvBGFC0oqjBmEX/qKHuCp9OlDddBh2Gwgh6DH6Dox BV0NJsnNvnD8vPtT6ekszOu6zSDCd3N4eJMvzc/lGdWhLBGmcFrqfuJIVxYYE/iI0M 2XfkJdSU883DVwXLzldUgBkHKSC2VpVVUzf3DLWTPxYHQZS9MQ08uL//hsUh841GUM wpQfz8jzE++SA== Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: multipart/signed; boundary=8211309eae880bde255c32ccbd15101254a2b82b6320eec0ebc9fad6e5af; micalg=pgp-sha384; protocol="application/pgp-signature" Date: Wed, 27 May 2026 10:19:18 +0200 Message-Id: Subject: phylink and an unusual PHY/SFP setup Cc: From: "Michael Walle" To: "Andrew Lunn" , "Russell King" X-Mailer: aerc 0.20.0 --8211309eae880bde255c32ccbd15101254a2b82b6320eec0ebc9fad6e5af Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Hi, I have a board with a rather unusual network link setup: MAC/PCS (fman) <-SerDes-> PHY (M88E1112) <-SerDes-> SFP or even MAC/PCS (fman) <-SerDes-> PHY (M88E1112) <-SerDes-> Copper SFP with PHY Does phylink support such a configuration? I suspect adding support for such a configuration isn't straight forward. FWIW, the M88E1112 PHY driver seems to be completely broken in upstream. It looks like it was assumed, that it's like the M88E1111. But that one only has 1 SerDes and one parallel interface. The 1112 has two SerDes interfaces and thus a completely different register map. I'm not sure it ever worked, except maybe by accident for the SGMII-to-Copper case. -michael --8211309eae880bde255c32ccbd15101254a2b82b6320eec0ebc9fad6e5af Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iKgEABMJADAWIQTIVZIcOo5wfU/AngkSJzzuPgIf+AUCahapBhIcbXdhbGxlQGtl cm5lbC5vcmcACgkQEic87j4CH/gFtwGAhH9lj1c8yreLy9EQPOISziEyBw2S3vAm o3vU9z+2NHabEX8ddIyTUFw99wzbRBieAYCKJdo58c0g5TSC46Hdy0PQvsII5GXk 91U09fiq3w/dr+rLpEOSefUAVmRLEyrnBcg= =rvDG -----END PGP SIGNATURE----- --8211309eae880bde255c32ccbd15101254a2b82b6320eec0ebc9fad6e5af--