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From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com,
	Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	netdev@vger.kernel.org, Paolo Abeni <pabeni@redhat.com>,
	Vinod Koul <vkoul@kernel.org>
Subject: [PATCH net-next 0/9] net: stmmac: qcom-ethqos: further serdes reorganisation
Date: Wed, 25 Feb 2026 09:00:41 +0000	[thread overview]
Message-ID: <aZ66OT9scKipRRu2@shell.armlinux.org.uk> (raw)

This is part 2 of the qcom-ethqos series, part 1 has now been merged.

This part of the series focuses on the generic PHY driver, but these
changes have dependencies on the ethernet driver, hence why
it will need to go via net-next. Furthermore, subsequent changes
depend on these patches.

The underlying ideas here are:

- get rid of the driver using phy_set_speed() with SPEED_1000 and
  SPEED_2500 which makes no sense for an ethernet SerDes due to the
  PCS 8B10B data encoding, which inflates the data rate at the SerDes
  compared to the MAC. This is replaced with phy_set_mode_ext().
- allow phy_power_on() / phy_set_mode*() to be called in any order.

Mohd has tested this series, but it would be great to get acks/reviews
from the generic PHY maintainers.

 .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c    | 31 +++--------
 drivers/phy/qualcomm/phy-qcom-sgmii-eth.c          | 62 +++++++++++++++++-----
 2 files changed, 57 insertions(+), 36 deletions(-)

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

             reply	other threads:[~2026-02-25  9:00 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-25  9:00 Russell King (Oracle) [this message]
2026-02-25  9:02 ` [PATCH net-next 1/8] net: stmmac: qcom-ethqos: move ethqos_set_serdes_speed() Russell King (Oracle)
2026-02-25  9:02 ` [PATCH net-next 3/8] net: stmmac: qcom-ethqos: convert to use phy_set_mode_ext() Russell King (Oracle)
2026-02-25  9:02 ` [PATCH net-next 8/8] net: stmmac: qcom-ethqos: remove phy_set_mode_ext() after phy_power_on() Russell King (Oracle)
2026-02-25  9:02 ` [PATCH net-next 0/9] net: stmmac: qcom-ethqos: further serdes reorganisation Russell King (Oracle)
2026-02-27 13:47   ` Vinod Koul
2026-02-27 15:27     ` Vladimir Oltean
2026-02-27 15:30       ` Russell King (Oracle)
2026-02-25 10:59 ` [PATCH net-next 2/8] phy: qcom-sgmii-eth: add .set_mode() and .validate() methods Russell King (Oracle)
2026-02-25 10:59 ` [PATCH net-next 4/8] phy: qcom-sgmii-eth: remove .set_speed() implementation Russell King (Oracle)
2026-02-27 13:42   ` Vinod Koul
2026-02-25 10:59 ` [PATCH net-next 5/8] phy: qcom-sgmii-eth: use PHY interface mode for SerDes settings Russell King (Oracle)
2026-02-27 13:43   ` Vinod Koul
2026-02-25 10:59 ` [PATCH net-next 6/8] phy: qcom-sgmii-eth: remove qcom_dwmac_sgmii_phy_interface() Russell King (Oracle)
2026-02-27 13:45   ` Vinod Koul
2026-02-25 10:59 ` [PATCH net-next 7/8] phy: qcom-sgmii-eth: relax order of .power_on() vs .set_mode*() Russell King (Oracle)
2026-02-27 13:45   ` Vinod Koul

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