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From: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
To: "Russell King (Oracle)" <linux@armlinux.org.uk>
Cc: Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	Michael Dege <michael.dege@renesas.com>,
	Christian Mardmoeller <christian.mardmoeller@renesas.com>,
	Dennis Ostermann <dennis.ostermann@renesas.com>
Subject: Re: [PATCH] net: phy: phy_ethtool_ksettings_set: Allow any supported speed
Date: Tue, 3 Dec 2024 19:02:38 +0500	[thread overview]
Message-ID: <d47cd2a9-441a-47ea-b509-f00657dc5495@cogentembedded.com> (raw)
In-Reply-To: <Z02GCGMOuiwZ4qvA@shell.armlinux.org.uk>

> Does IEEE 802.3 allow auto-negotiation to be turned off for speeds
> greater than 1Gbps?

Per 802.3-2022 ch, autoneg is optional:


| 125.2.4.3 Auto-Negotiation, type single differential-pair media
|
| Auto-Negotiation (Clause 98) may be used by 2.5GBASE-T1 and
| 5GBASE-T1 devices to detect the abilities (modes of operation)
| supported by the device at the other end of a link segment,
| determine common abilities, and configure for joint operation.
| Auto-Negotiation is performed upon link startup through the use
| of half-duplex differential Manchester encoding.
|
| The use of Clause 98 Auto-Negotiation is optional for 2.5GBASE-T1
| and 5GBASE-T1 PHYs.

      reply	other threads:[~2024-12-03 14:02 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-12-02  8:33 Nikita Yushchenko
2024-12-02  9:03 ` Maxime Chevallier
2024-12-02  9:20   ` Nikita Yushchenko
2024-12-02  9:59     ` Maxime Chevallier
2024-12-02 10:10     ` Russell King (Oracle)
2024-12-02 10:17       ` Nikita Yushchenko
2024-12-02 10:23         ` Russell King (Oracle)
2024-12-02 11:09           ` Nikita Yushchenko
2024-12-02 12:30             ` Russell King (Oracle)
2024-12-02 15:51               ` Nikita Yushchenko
2024-12-02 16:03                 ` Russell King (Oracle)
2024-12-03 11:01                   ` Nikita Yushchenko
2024-12-03 15:15                     ` Russell King (Oracle)
2024-12-03 14:05                   ` Dennis Ostermann
2024-12-03 14:45                     ` Andrew Lunn
2024-12-03 15:21                       ` Russell King (Oracle)
2024-12-03 15:51                         ` Maxime Chevallier
2024-12-03 16:37                           ` Russell King (Oracle)
2024-12-02 14:32             ` Andrew Lunn
2024-12-02 10:03 ` Russell King (Oracle)
2024-12-03 14:02   ` Nikita Yushchenko [this message]

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