On Wed, Sep 23, 2026 at 8:04 AM Mohd Ayaan Anwar
<mohd.anwar@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@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@oss.qualcomm.com>
>
Good Job，
Tested-by: Zhangfei Gao <zhangfei.gao@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