[v8,0/7] Add PCIe support for Qualcomm IPQ5332

Message

Varadarajan Narayanan Jan. 27, 2025, 7:28 a.m. UTC

Patch series adds support for enabling the PCIe controller and
UNIPHY found on Qualcomm IPQ5332 platform. PCIe0 is Gen3 X1 and
PCIe1 is Gen3 X2 are added.

This series combines [1] and [2]. [1] introduces IPQ5018 PCIe
support and [2] depends on [1] to introduce IPQ5332 PCIe support.
Since the community was interested in [2] (please see [3]), tried
to revive IPQ5332's PCIe support with v2 of this patch series.

v2 of this series pulled in the phy driver from [1] tried to
address comments/feedback given in both [1] and [2].

1. Enable IPQ5018 PCI support (Nitheesh Sekar) - https://lore.kernel.org/all/[e-mail]/
2. Add PCIe support for Qualcomm IPQ5332 (Praveenkumar I) - https://lore.kernel.org/linux-arm-msm/[e-mail]/
3. Community interest - https://lore.kernel.org/linux-arm-msm/20240310132915.GE3390@thinkpad/

v7: phy bindings:
    * Include data type definition to 'num-lanes'

    controller bindings:
    * Split the ipq9574 and ipq5332 changes into separate patches

    dtsi:
    * Add root port definitions

v6: phy bindings:
    * Fix num-lanes definition

    phy driver:
    * Fix num-lanes handling in probe to use generally followed pattern

    controller bindings:
    * Give more info in commit log

    dtsi:
    * Add assigned-clocks & assigned-clock-rates to controller nodes
    * Add num-lanes to pcie0_phy

v5: phy bindings:
    * Drop '3x1' & '3x2' from compatible string
    * Use 'num-lanes' to differentiate instead of '3x1' or '3x2'
      in compatible string
    * Describe clocks and resets instead of just maxItems

    phy driver:
    * Get num-lanes from DTS
    * Drop compatible specific init data as there is only one
      compatible string

    controller bindings:
    * Re-arrange 5332 and 9574 compatibles to handle fallback usage in dts

    dtsi:
    * Add 'num-lanes' to "pcie1_phy: phy@4b1000"
    * Make ipq5332 as main and ipq9574 as fallback compatible
    * Sort controller nodes per address

    misc:
    Add R-B tag from Konrad to dts and dtsi patches

v4: * phy bindings - Create ipq5332 compatible instead of reusing ipq9574 for bindings
    * phy bindings - Remove reset-names as the resets are handled with bulk APIs
    * phy bindings - Fix order in the 'required' section
    * phy bindings - Remove clock-output-names
    * dtsi - Add missing reset for pcie1_phy
    * dtsi - Convert 'reg-names' to a vertical list
    * dts - Fix nodes sort order
    * dts - Use property-n followed by property-names

v3: * Update the cover letter with the sources of the patches
    * Rename the dt-bindings yaml file similar to other phys
    * Drop ipq5332 specific pcie controllor bindings and reuse
      ipq9574 pcie controller bindings for ipq5332
    * Please see patches for specific changes
    * Set GPL license for phy-qcom-uniphy-pcie-28lp.c

v2: Address review comments from V1
    Drop the 'required clocks' change that would break ABI (in dt-binding, dts, gcc-ipq5332.c)
    Include phy driver from the dependent series

v1: https://lore.kernel.org/linux-arm-msm/[e-mail]/

Nitheesh Sekar (2):
  dt-bindings: phy: qcom,uniphy-pcie: Document PCIe uniphy
  phy: qcom: Introduce PCIe UNIPHY 28LP driver

Praveenkumar I (2):
  arm64: dts: qcom: ipq5332: Add PCIe related nodes
  arm64: dts: qcom: ipq5332-rdp441: Enable PCIe phys and controllers

Varadarajan Narayanan (3):
  dt-bindings: PCI: qcom: Use sdx55 reg description for ipq9574
  arm64: dts: qcom: ipq9574: Reorder reg and reg-names
  dt-bindings: PCI: qcom: Document the IPQ5332 PCIe controller

 .../devicetree/bindings/pci/qcom,pcie.yaml    |  12 +-
 .../phy/qcom,ipq5332-uniphy-pcie-phy.yaml     |  76 +++++
 arch/arm64/boot/dts/qcom/ipq5332-rdp441.dts   |  76 +++++
 arch/arm64/boot/dts/qcom/ipq5332.dtsi         | 268 +++++++++++++++-
 arch/arm64/boot/dts/qcom/ipq9574.dtsi         |  52 ++--
 drivers/phy/qualcomm/Kconfig                  |  12 +
 drivers/phy/qualcomm/Makefile                 |   1 +
 .../phy/qualcomm/phy-qcom-uniphy-pcie-28lp.c  | 286 ++++++++++++++++++
 8 files changed, 760 insertions(+), 23 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq5332-uniphy-pcie-phy.yaml
 create mode 100644 drivers/phy/qualcomm/phy-qcom-uniphy-pcie-28lp.c


base-commit: 5ffa57f6eecefababb8cbe327222ef171943b183