[PATCH v4 0/7] Add JH7110 USB and USB PHY driver support

[Minda Chen]

This patchset adds USB driver and USB PHY for the StarFive JH7110 SoC.
USB work mode is peripheral and using USB 2.0 PHY in VisionFive 2 board.
The patch has been tested on the VisionFive 2 board.

This patchset should be applied after the patchset [1], [2] and[3]:
[1] https://patchwork.kernel.org/project/linux-riscv/cover/20230314124404.117592-1-xingyu.wu@xxxxxxxxxxxxxxxx/
[2] https://lore.kernel.org/all/20230315055813.94740-1-william.qiu@xxxxxxxxxxxxxxxx/
[3] https://patchwork.kernel.org/project/linux-phy/cover/20230315100421.133428-1-changhuang.liang@xxxxxxxxxxxxxxxx/

This patchset is base on v6.3-rc4

patch 1 is usb phy dt-binding document.
patch 2 is Pcie PHY dt-binding document.
patch 3 is USB 2.0 PHY driver.
patch 4 is PCIe PHY driver.
patch 5 is usb dt-binding document.
patch 6 is the wrapper module driver of Cadence USB3. USB controller IP is Cadence USB3.
patch 7 is USB device tree configuration.

previous version
---
v1: https://patchwork.kernel.org/project/linux-usb/cover/20230306095212.25840-1-minda.chen@xxxxxxxxxxxxxxxx/
v2: https://patchwork.kernel.org/project/linux-usb/cover/20230308082800.3008-1-minda.chen@xxxxxxxxxxxxxxxx/
v3: https://patchwork.kernel.org/project/linux-usb/cover/20230315104411.73614-1-minda.chen@xxxxxxxxxxxxxxxx/

changes
v4:
  1. (patch 1) split PCIe PHY dt-binding doc to patch 2.
  2. (patch 2) PCIe PHY add stg and sys con configuration to dt-binding doc.
  3. (patch 3)
     - split PCIe PHY driver to patch 4.
     - replace dr_mode to phy mode in jh7110_usb2_phy.
  4. (patch 4) 
     - Makefile and Kconfig sorted by alphabet sequence.
     - Add PCIe PHY stg and syscon PHY connection configuration
       for USB 3.0.
  5. (patch 5)
     - commit message changed.
     - merge wrapper dts node and cdns3 node in example.
     - Add interrupts, reg, phy and dr_mode in property.
     - Add reset-name in property example.
  6. (patch 6)
     - For dts node is merged, Using platform_device_alloc and
       platform_device_add to generate cadence sub device.
     - IOMEM and IRQ resource are passed to Cadence sub device.
     - Add PHY ops process for PHY dts setting can not be passed to
       Cadence USB driver.
     - remove the stg and sys USB 3.0 PHY configuration.
     - Change the suspend clock reset and clock enable sequence.
     - Get all reset and clock resources before enable them in 
       cdns_clk_rst_init.
     - commit message changed.
  7. (patch 7)
     - merge wrapper dts node and cdns3 node in usb dts.
     - move the stg and sys USB 3.0 PHY confiuration to
       PCIe PHY dts node.
     - commit message changed.
     - Add reset-names dts.

v3:
  1. Add patch 1 - 4. Add USB PHY driver and dt-binding doc. 
     USB PHY codes are moved to patch 3 and patch 4.
  2. (patch 5)
     - USB wrapper module dts document is moved to usb directory.
     - Remove the 'dr_mode' and 'starfive,usb2-only' setting.
     - Some dts format changes. dts binding check pass.
  3. (patch 6)
     - Remove the PHY codes. 
     - Search 'dr_mode' and phy setting from Cadence subnode.
  4. (patch 7)
     - Add USB PHY dts configurion. 
     - 'dr_mode' is moved to Cadence controller submode.

v2:
  1. (patch 5) dt-binding changes. The document example is the same as dts config.
  2. (patch 6) using dev_err_probe and syscon_regmap_lookup_by_phandle_args function. Some formats changes
  3. (patch 7) dts nodes sorted by the address after @


Minda Chen (7):
  dt-bindings: phy: Add StarFive JH7110 USB document
  dt-bindings: phy: Add StarFive JH7110 PCIe document
  phy: starfive: add JH7110 USB 2.0 PHY driver.
  phy: starfive: add JH7110 PCIE 2.0 PHY driver.
  dt-bindings: usb: Add StarFive JH7110 USB Bindings YAML schemas
  usb: cdns3: add StarFive JH7110 USB driver.
  riscv: dts: starfive: add USB dts configuration for JH7110

 .../phy/starfive,jh7110-pcie-phy.yaml         |  58 +++
 .../bindings/phy/starfive,jh7110-usb-phy.yaml |  50 +++
 .../bindings/usb/starfive,jh7110-usb.yaml     | 136 +++++++
 MAINTAINERS                                   |  16 +
 .../jh7110-starfive-visionfive-2.dtsi         |   7 +
 arch/riscv/boot/dts/starfive/jh7110.dtsi      |  44 ++
 drivers/phy/starfive/Kconfig                  |  22 +
 drivers/phy/starfive/Makefile                 |   2 +
 drivers/phy/starfive/phy-jh7110-pcie.c        | 197 +++++++++
 drivers/phy/starfive/phy-jh7110-usb.c         | 161 ++++++++
 drivers/usb/cdns3/Kconfig                     |  11 +
 drivers/usb/cdns3/Makefile                    |   1 +
 drivers/usb/cdns3/cdns3-starfive.c            | 378 ++++++++++++++++++
 drivers/usb/cdns3/core.h                      |   3 +
 14 files changed, 1086 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/starfive,jh7110-pcie-phy.yaml
 create mode 100644 Documentation/devicetree/bindings/phy/starfive,jh7110-usb-phy.yaml
 create mode 100644 Documentation/devicetree/bindings/usb/starfive,jh7110-usb.yaml
 create mode 100644 drivers/phy/starfive/phy-jh7110-pcie.c
 create mode 100644 drivers/phy/starfive/phy-jh7110-usb.c
 create mode 100644 drivers/usb/cdns3/cdns3-starfive.c


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2.17.1