linux-kernel - [PATCH v4 0/5] Add PCIe support for Qualcomm IPQ5332

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Message-ID: <20241226102432.3193366-1-quic_varada@quicinc.com>
Date: Thu, 26 Dec 2024 15:54:27 +0530
From: Varadarajan Narayanan <quic_varada@...cinc.com>
To: <lpieralisi@...nel.org>, <kw@...ux.com>,
        <manivannan.sadhasivam@...aro.org>, <robh@...nel.org>,
        <bhelgaas@...gle.com>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <vkoul@...nel.org>, <kishon@...nel.org>, <andersson@...nel.org>,
        <konradybcio@...nel.org>, <p.zabel@...gutronix.de>,
        <dmitry.baryshkov@...aro.org>, <quic_nsekar@...cinc.com>,
        <quic_varada@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-phy@...ts.infradead.org>
Subject: [PATCH v4 0/5] Add PCIe support for Qualcomm IPQ5332

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/20231003120846.28626-1-quic_nsekar@quicinc.com/
2. Add PCIe support for Qualcomm IPQ5332 (Praveenkumar I) - https://lore.kernel.org/linux-arm-msm/20231214062847.2215542-1-quic_ipkumar@quicinc.com/
3. Community interest - https://lore.kernel.org/linux-arm-msm/20240310132915.GE3390@thinkpad/

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/20231214062847.2215542-1-quic_ipkumar@quicinc.com/

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 (1):
  dt-bindings: PCI: qcom: Document the IPQ5332 PCIe controller

 .../devicetree/bindings/pci/qcom,pcie.yaml    |   6 +-
 .../phy/qcom,ipq5332-uniphy-pcie-phy.yaml     |  68 ++++
 arch/arm64/boot/dts/qcom/ipq5332-rdp441.dts   |  76 +++++
 arch/arm64/boot/dts/qcom/ipq5332.dtsi         | 218 ++++++++++++-
 drivers/phy/qualcomm/Kconfig                  |  12 +
 drivers/phy/qualcomm/Makefile                 |   1 +
 .../phy/qualcomm/phy-qcom-uniphy-pcie-28lp.c  | 294 ++++++++++++++++++
 7 files changed, 672 insertions(+), 3 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: 8155b4ef3466f0e289e8fcc9e6e62f3f4dceeac2
-- 
2.34.1