[PATCH v4 0/5] USB4 mode programming for QMMPHY on X1E

The USB43DP QMP PHY, as the name suggests, supports USB4 in addition to
DP/USB. This series provides the necessary plumbing to switch to that
mode of operation on hamoa/purwa.

This is achieved by exposing a third `struct phy *` for the USB4 sub-
PHY, which will be toggled by the USB4 router driver, living within the
Thunderbolt framework, which will be posted separately.

Find more details in the individual commit messages. Tested on a
X1E80100 CRD.

No external dependencies.

Signed-off-by: Konrad Dybcio <[email protected]>
---
Changes in v4:
- Rebase on next-20260820
- Rename phy-tbt.h to phy-thunderbolt.h
- Add missing error unrolling in usb4 phy_init()
- Rename usb4phy_init_count to usb4_init_count
- Refactor the submode acceptance logic in usb4 phy_set_mode()
- Pick up tags
- Link to v3: https://patch.msgid.link/[email protected]

Changes in v3:
- Fix up assisted-by tag
- Pick up tags
- Link to v2: https://patch.msgid.link/[email protected]

Changes in v2:
- Massage the bindings to only allow the p2rr2p clock on Hamoa
- Pick up tags
- Rebase (nop)
- Link to v1: https://patch.msgid.link/[email protected]

To: Vinod Koul <[email protected]>
To: Neil Armstrong <[email protected]>
To: Rob Herring <[email protected]>
To: Krzysztof Kozlowski <[email protected]>
To: Conor Dooley <[email protected]>
To: Bjorn Andersson <[email protected]>
To: Konrad Dybcio <[email protected]>
To: Manivannan Sadhasivam <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]

---
Konrad Dybcio (5):
      dt-bindings: phy: qcom,qmp-usb3-dp: Extend X1E description for USB4
      phy: core: Define TBT phy_mode
      phy: qualcomm: qmp-combo: Add preliminary USB4 support
      phy: qualcomm: qmp-combo: Add USB4/TBT3 configuration data for Hamoa
      arm64: dts: qcom: hamoa: Extend QMPPHY description for USB4

 .../phy/qcom,sc8280xp-qmp-usb43dp-phy.yaml         |  55 +-
 arch/arm64/boot/dts/qcom/hamoa.dtsi                |  18 +-
 drivers/phy/qualcomm/phy-qcom-qmp-combo.c          | 599 ++++++++++++++++++---
 drivers/phy/qualcomm/phy-qcom-qmp-pcs-aon-v6.h     |   2 +
 drivers/phy/qualcomm/phy-qcom-qmp-pcs-usb-v6.h     |  15 +
 .../phy/qualcomm/phy-qcom-qmp-qserdes-txrx-v6_n4.h |  45 ++
 include/dt-bindings/phy/phy-qcom-qmp.h             |   1 +
 include/linux/phy/phy-thunderbolt.h                |  14 +
 include/linux/phy/phy.h                            |   2 +
 9 files changed, 658 insertions(+), 93 deletions(-)
---
base-commit: 7079a12d7506b07fb53b54a664bfad5fa9b16d70
change-id: 20260518-topic-usb4phy-e9612f5ba008

Best regards,
--  
Konrad Dybcio <[email protected]>


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