netdev - Re: [PATCH net-next 10/14] net: stmmac: use integrated PCS for BASE-X modes

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Message-ID: <c6d88377-2b0f-4535-96b1-3eb01efef709@bootlin.com>
Date: Mon, 19 Jan 2026 14:20:28 +0100
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
 Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, linux-arm-kernel@...ts.infradead.org,
 linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
 linux-stm32@...md-mailman.stormreply.com,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Mohd Ayaan Anwar <mohd.anwar@....qualcomm.com>,
 Neil Armstrong <neil.armstrong@...aro.org>, netdev@...r.kernel.org,
 Paolo Abeni <pabeni@...hat.com>, Vinod Koul <vkoul@...nel.org>
Subject: Re: [PATCH net-next 10/14] net: stmmac: use integrated PCS for BASE-X
 modes

On 19/01/2026 13:34, Russell King (Oracle) wrote:
> dwmac-qcom-ethqos supports SGMII and 2500BASE-X using the integrated
> PCS, so we need to expand the PCS support to include support for
> BASE-X modes.
> 
> Add support to the prereset configuration to detect 2500BASE-X, and
> arrange for stmmac_mac_select_pcs() to return the integrated PCS if
> its supported_interfaces bitmap reports support for the interface mode.
> 
> This results in priv->hw->pcs now being write-only, so remove it.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>

Reviewed-by: Maxime Chevallier <maxime.chevallier@...tlin.com>

Maxime