[v5,0/7] Add JH7110 USB and USB PHY driver support

  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] and [2]:
[1] https://patchwork.kernel.org/project/linux-riscv/cover/20230411135558.44282-1-xingyu.wu@starfivetech.com/
[2] https://patchwork.kernel.org/project/linux-phy/cover/20230412084540.295411-1-changhuang.liang@starfivetech.com/

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
---
version 1 patchset are split to different kernel organization. It is
incorrect. But they were sent, and Emil sent comments. I think I should 
reserve them in cover-letter. To read the change records and previous version, 
please start with version 2. 

v1: https://patchwork.kernel.org/project/linux-usb/cover/20230306095212.25840-1-minda.chen@starfivetech.com/
v2: https://patchwork.kernel.org/project/linux-usb/cover/20230308082800.3008-1-minda.chen@starfivetech.com/
v3: https://patchwork.kernel.org/project/linux-usb/cover/20230315104411.73614-1-minda.chen@starfivetech.com/
v4: https://patchwork.kernel.org/project/linux-usb/cover/20230406015216.27034-1-minda.chen@starfivetech.com/

changes
v5:
  1. (patch 1) set correct model name and commit title.
  2. (patch 2) change to '-item' in syscon property. change commit title.
  3. (patch 5)
     - change to '-item' in syscon configure.
     - change commit title and doc title.
  4. (patch 6)
     - add clk and phy deinit function
     - add clk deinit function if phy init failed.
     - coding style changes and other format 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 PHY
  dt-bindings: phy: Add StarFive JH7110 PCIe PHY
  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 controller
  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     | 131 ++++++
 MAINTAINERS                                   |  14 +
 .../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        | 202 +++++++++
 drivers/phy/starfive/phy-jh7110-usb.c         | 162 ++++++++
 drivers/usb/cdns3/Kconfig                     |  11 +
 drivers/usb/cdns3/Makefile                    |   1 +
 drivers/usb/cdns3/cdns3-starfive.c            | 390 ++++++++++++++++++
 drivers/usb/cdns3/core.h                      |   3 +
 14 files changed, 1097 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


base-commit: 197b6b60ae7bc51dd0814953c562833143b292aa