netdev - Re: [PATCH net-next] net: phy: Synchronize c45_ids to phy

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <aDCyQOdcREDJTa-V@shell.armlinux.org.uk>
Date: Fri, 23 May 2025 18:37:04 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Yajun Deng <yajun.deng@...ux.dev>
Cc: Andrew Lunn <andrew@...n.ch>, hkallweit1@...il.com, davem@...emloft.net,
	edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net: phy: Synchronize c45_ids to phy_id

On Fri, May 23, 2025 at 02:10:00AM +0000, Yajun Deng wrote:
> I noticed that. I tested the BCM89890, 88X3310 and 88Q2110 PHY devices,
> and the ID is always the same in different MMDs.

The 88x3310 PHY uses:

	Device ID	Package ID	OUI
MMD 1: 0x002b09aa	0x002b09aa	00:0a:c2
MMD 3: 0x002b09aa	0x002b09aa	00:0a:c2
MMD 4: 0x01410daa	0x01410daa	00:50:43
MMD 7: 0x002b09aa	0x002b09aa	00:0a:c2

other MMDs do not contain an ID.

According to https://hwaddress.com/oui-iab/00-0A-C2/, 00:0a:c2 is/was
Wuhan FiberHome Digital Technology Co.

00:50:43 is Marvell Semiconductor.

Not all PHYs have a single ID. IEEE 802.3 allows for this.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!