[PATCH v6 0/7] Add JH7110 USB and USB PHY driver support

[Minda Chen <minda.chen@starfivetech.com>]

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/20230518101234.143748-1-xingyu.wu@starfivetech.com/
[2] https://patchwork.kernel.org/project/linux-clk/cover/20230512022036.97987-1-xingyu.wu@starfivetech.com
[3] https://patchwork.kernel.org/project/linux-phy/cover/20230412084540.295411-1-changhuang.liang@starfivetech.com/

This patchset is base on v6.4-rc1

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/
v5: https://patchwork.kernel.org/project/linux-usb/cover/20230420110052.3182-1-minda.chen@starfivetech.com/

changes
v6:
  1. (patch 3) remove the platform remove function.
  2. (patch 4)
     - add switch to pcie mode function.
     - remove the redundant init/exit function.
  3. (patch 5)
     - dts split to wrapper layer and cdns node. The codes are
       like v3.
     - add cdns3 sub node dts-binding references.
  4. (patch 6)
     For stg-syscon iomem 0x10240000 - 0x10240010 actually is belonged
     to usb, so USB contain its own registers. So do not merge the dts node.
     The codes are like v3.
     - remove the cdns3_platform_add function.
     - remove phy ops because cdns3 contain all the phy ops.
     - runtime suspend function just shutdown the clocks.
  5. (patch 7)
     - add cdns3 subnode again.

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     | 115 ++++++++
 MAINTAINERS                                   |  14 +
 .../jh7110-starfive-visionfive-2.dtsi         |   5 +
 arch/riscv/boot/dts/starfive/jh7110.dtsi      |  53 ++++
 drivers/phy/starfive/Kconfig                  |  21 ++
 drivers/phy/starfive/Makefile                 |   2 +
 drivers/phy/starfive/phy-jh7110-pcie.c        | 204 +++++++++++++++
 drivers/phy/starfive/phy-jh7110-usb.c         | 150 +++++++++++
 drivers/usb/cdns3/Kconfig                     |  11 +
 drivers/usb/cdns3/Makefile                    |   1 +
 drivers/usb/cdns3/cdns3-starfive.c            | 246 ++++++++++++++++++
 13 files changed, 930 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: ac9a78681b921877518763ba0e89202254349d1b
-- 
2.17.1


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