From: patchwork-bot+netdevbpf@kernel.org
To: Stefan Agner <stefan@agner.ch>
Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, andrew+netdev@lunn.ch,
rmk+kernel@armlinux.org.uk, maxime.chevallier@bootlin.com,
j.raczynski@samsung.com, alexander.stein@ew.tq-group.com,
ovidiu.panait.rb@renesas.com, mcoquelin.stm32@gmail.com,
alexandre.torgue@foss.st.com, netdev@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
regressions@lists.linux.dev
Subject: Re: [PATCH net v3] net: stmmac: resume PHY before hardware setup when opening the interface
Date: Wed, 05 Aug 2026 01:20:12 +0000 [thread overview]
Message-ID: <178589281289.3863162.5474751490038386802.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260803095156.132827-1-stefan@agner.ch>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Mon, 3 Aug 2026 11:51:56 +0200 you wrote:
> Since the referenced commit, changing the MTU on a running interface no
> longer disconnects and reconnects the PHY; __stmmac_release() merely
> stops phylink, which also suspends the PHY (BMCR power-down) when WoL
> is not enabled. __stmmac_open() then performs the DMA software reset in
> stmmac_hw_setup() before phylink_start() resumes the PHY again.
>
> IEEE 802.3 22.2.4.1.5 allows a PHY to stop its receive clock while
> powered down, and stmmac requires a running receive clock for the DMA
> software reset to complete (the phylink config sets mac_requires_rxc).
> On such setups, e.g. the RK3566-based Home Assistant Green with an
> RTL8211F-VD PHY in RGMII mode, any runtime MTU change now times out and
> leaves the interface dead:
>
> [...]
Here is the summary with links:
- [net,v3] net: stmmac: resume PHY before hardware setup when opening the interface
https://git.kernel.org/netdev/net/c/06232cb44bc8
You are awesome, thank you!
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prev parent reply other threads:[~2026-08-05 1:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-03 9:51 [PATCH net v3] net: stmmac: resume PHY before hardware setup when opening the interface Stefan Agner
2026-08-03 10:36 ` Maxime Chevallier
2026-08-03 11:42 ` Stefan Agner
2026-08-05 1:20 ` patchwork-bot+netdevbpf [this message]
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