[PATCH v2 0/4] Add PCIe support for Qualcomm Nord platform

[Krishna Chaitanya Chundru]

This series adds PCIe support for the Qualcomm Nord (SA8797P) platform.

Nord has a single Gen5-capable QMP PCIe PHY block split into four
independently-clocked and independently-resettable ports (A/B/C/D).
Firmware selects the active lane topology at boot via a TCSR
configuration register, and the same PHY block can appear as a single
x16 port, x8+x8, x8+x4+x4, or x8+x4+x2+x2 depending on that mode. This
is similar in spirit to the Glymur multi-PHY support already posted,
except Nord's PHY registers are programmed by Linux rather than by
firmware, so this series adds the PLL, TXRXZ, PCS and PCS-lane init
tables along with the power-up/power-down/soft-reset sequencing needed
to bring each port up.

The series also documents and wires up the qcom,nord-pcie compatible
(reusing the existing SA8775P PCIe controller binding), and adds a
CORE_CLK_CGC_DIS/AUX_PWR_DET workaround required to avoid a timing
convergence issue in the PCIe power domain.

Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>
---
To: Vinod Koul <vkoul@xxxxxxxxxx>
To: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
To: Rob Herring <robh@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
To: Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>
To: Lorenzo Pieralisi <lpieralisi@xxxxxxxxxx>
To: Krzysztof Wilczyński <kwilczynski@xxxxxxxxxx>
To: Manivannan Sadhasivam <mani@xxxxxxxxxx>
To: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
To: Bjorn Andersson <andersson@xxxxxxxxxx>
To: Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx>
To: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Cc: linux-phy@xxxxxxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-pci@xxxxxxxxxxxxxxx

---
Changes in v2:
- Fix dtbinding errors (Krzysztof)
- Link to v1: https://patch.msgid.link/20260825-nord-v1-0-7c02f2b8765a@xxxxxxxxxxxxxxxx

---
Krishna Chaitanya Chundru (4):
      dt-bindings: phy: qcom: add Nord QMP PCIe PHY binding
      dt-bindings: pci: qcom: add Nord PCIe controller compatible
      PCI: qcom: Add CGC disable workaround for Nord PCIe
      phy: qcom: qmp-pcie: Add Nord Gen5x16 PCIe multi-PHY support

 .../devicetree/bindings/pci/qcom,pcie-sa8775p.yaml |    1 +
 .../phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml        |  276 +++++
 drivers/pci/controller/dwc/pcie-qcom.c             |   16 +
 drivers/phy/qualcomm/phy-qcom-qmp-pcie-multiphy.c  | 1077 +++++++++++++++++++-
 drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v6_40.h |   56 +
 drivers/phy/qualcomm/phy-qcom-qmp-pcs-v6_40.h      |   14 +
 .../qualcomm/phy-qcom-qmp-qserdes-com-pcie-v6_40.h |   94 ++
 .../phy-qcom-qmp-qserdes-txrxz-pcie-v6_40.h        |  194 ++++
 8 files changed, 1688 insertions(+), 40 deletions(-)
---
base-commit: 6e448b42dcb885d89dfb80c4263e579c1c4f15ca
change-id: 20260810-nord-461809f1d5ae

Best regards,
--  
Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>