[PATCH 0/3] phy: qcom: sgmii-eth: add Nord USXGMII support

[Zhangfei Gao]

On Wed, Sep 23, 2026 at 8:04 AM Mohd Ayaan Anwar
<mohd.anwar at oss.qualcomm.com> wrote:
>
> This series adds support for the Ethernet SerDes found on the Qualcomm
> Nord SoC.
>
> Nord uses a QMP v7 SerDes block, which is an updated version of the
> SGMII SerDes PHY IP already handled by phy-qcom-sgmii-eth. The driver
> currently supports the 1.25 Gbaud and 3.125 Gbaud configurations used by
> SGMII, 1000BASE-X and 2500BASE-X. Nord additionally requires the SerDes
> to operate at 10.3125 Gbaud for its 10 Gigabit Ethernet interfaces.
>
> The series can be broadly divided into three parts:
>
>   1. Add the qcom,nord-dwmac-sgmii-phy compatible to the binding.
>   2. Prepare the driver for PHY modes which require different SerDes
>      programming and readiness checks. Existing SA8775P behaviour is
>      unchanged.
>   3. Add the QMP v7 register definitions, 10.3125 Gbaud programming
>      sequence and readiness checks required for USXGMII and 10GBASE-R.
>
> The changes have been tested on the Nord Ride SX platform, which has a
> MV-Q6223 switch, running in fixed link USXGMII 10G mode.
>
> Signed-off-by: Mohd Ayaan Anwar <mohd.anwar at oss.qualcomm.com>
> ---
> Mohd Ayaan Anwar (3):
>       dt-bindings: phy: qcom,sa8775p-dwmac-sgmii-phy: add Nord compatible
>       phy: qcom: sgmii-eth: prepare for additional PHY modes
>       phy: qcom: sgmii-eth: add Nord USXGMII support
>
>  .../bindings/phy/qcom,sa8775p-dwmac-sgmii-phy.yaml |   1 +
>  drivers/phy/qualcomm/phy-qcom-qmp-pcs-sgmii.h      |   5 +
>  drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v7.h |   2 +
>  .../phy/qualcomm/phy-qcom-qmp-qserdes-txrx-v7.h    |   9 +
>  drivers/phy/qualcomm/phy-qcom-sgmii-eth.c          | 226 ++++++++++++++++++---
>  5 files changed, 219 insertions(+), 24 deletions(-)
> ---
> base-commit: a8c591ed6b672915e0be57843f943a2a723aff40
> change-id: 20260923-nord_ethernet_serdes-c486f715f383
>
> Best regards,
> --
> Mohd Ayaan Anwar <mohd.anwar at oss.qualcomm.com>
>

Good Job，

Tested-by: Zhangfei Gao <zhangfei.gao at oss.qualcomm.com>

Tested on both IQ10 RRD and Ride

Full test patch is in the git
https://github.com/zhangfei-gao/kernel-topics/tree/next-9.23