On Thu, Feb 19, 2026 at 12:49:08PM +0000, Russell King (Oracle) wrote:

This is part 2 of the qcom-ethqos series, building on the previous
series which can be found at
https://lore.kernel.org/r/aY0aJppQWUC52OUq@shell.armlinux.org.uk (local)

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.
- allow phy_power_on() / phy_set_mode*() to be called in any order.

I've included the set_clk_tx_rate() patch as that was tested, which
would make applying this series awkward to apply without it.

Mohd, please could you test this series - I'm hoping it will pass with
flying colours as there should be no change to the order in which we
program the hardware. Thanks.

 .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c    | 52 +++++++-----------
 drivers/phy/qualcomm/phy-qcom-sgmii-eth.c          | 62 +++++++++++++++++-----
 2 files changed, 68 insertions(+), 46 deletions(-)

After changing phy_set_mode() to phy_set_mode_ext() in
dwmac-qcom-ethqos.c, no issues found on:

  - QCS9100 Ride R3 (AQR115C PHY, 2500BASE-X) - 2.5G/1G/100M
  - IQ9 EVK (QCA8081 PHY, 2500BASE-X) - 2.5G

Tested-by: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com>

	Ayaan