netdev - Re: [PATCH net] Revert "dsa: mv88e6xxx: make serdes SGMII/Fiber tx amplitude configurable"

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Message-Id: 
 <176774820778.2186142.10553727330446335686.git-patchwork-notify@kernel.org>
Date: Wed, 07 Jan 2026 01:10:07 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Vladimir Oltean <vladimir.oltean@....com>
Cc: netdev@...r.kernel.org, andrew@...n.ch, linux@...linux.org.uk,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
 kabel@...nel.org, holger.brunck@...achienergy.com
Subject: Re: [PATCH net] Revert "dsa: mv88e6xxx: make serdes SGMII/Fiber tx
 amplitude configurable"

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Sun,  4 Jan 2026 11:39:52 +0200 you wrote:
> This reverts commit 926eae604403acfa27ba5b072af458e87e634a50, which
> never could have produced the intended effect:
> https://lore.kernel.org/netdev/AM0PR06MB10396BBF8B568D77556FC46F8F7DEA@AM0PR06MB10396.eurprd06.prod.outlook.com/
> 
> The reason why it is broken beyond repair in this form is that the
> mv88e6xxx driver outsources its "tx-p2p-microvolt" property to the OF
> node of an external Ethernet PHY. This:
> (a) does not work if there is no external PHY (chip-to-chip connection,
>     or SFP module)
> (b) pollutes the OF property namespace / bindings of said external PHY
>     ("tx-p2p-microvolt" could have meaning for the Ethernet PHY's SerDes
>     interface as well)
> 
> [...]

Here is the summary with links:
  - [net] Revert "dsa: mv88e6xxx: make serdes SGMII/Fiber tx amplitude configurable"
    https://git.kernel.org/netdev/net/c/7801edc9badd

You are awesome, thank you!
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