[RFC PATCH v2 0/6] Add Pinctrl driver for Starfive JH8100 SoC

[Alex Soo]

Starfive JH8100 SoC consists of 4 pinctrl domains - sys_east,
sys_west, sys_gmac, and aon. This patch series adds pinctrl
drivers for these 4 pinctrl domains and this patch series is
depending on the JH8100 base patch series in [1] and [2].
The relevant dt-binding documentation for each pinctrl domain has
been updated accordingly.

[1] https://lore.kernel.org/lkml/20231201121410.95298-1-jeeheng.sia@xxxxxxxxxxxxxxxx/
[2] https://lore.kernel.org/lkml/20231206115000.295825-1-jeeheng.sia@xxxxxxxxxxxxxxxx/

---

Changes in v2:
- Add "(always-on)" to document title to clarify acronym AON.
- Replace "drive-strength" by "drive-strength-microamp".
- Update "slew-rate" property in sys-east, sys-west, and aon document.
- remove redundant "bindings" from commit subject and message.
- Change regular expression "-[0-9]+$"  to "-grp$" to standardize client
  node names to end with suffix "-grp" instead of "-<numerical _number>".
- Use 4 spaces indentation for DTS examples.
- Update DTS examples in sys-east, sys-west, and aon document with client
  driver pinmuxing.
- Remove redundant syscon and gmac macros from dt-binding header file.
- Remove redundant register macros from dt-binding header file.
- Add "wakeup-gpios" and "wakeup-source" to aon document.
- Add "gpio-line-names" to sys-east and sys-west document.
- Update the description of syscon register usage in each document.
- Update sys-gmac and aon document with information of GMAC voltage.
  reference syscon and GMAC pad syscon.
- Fix the pinctrl device nodes compatible string too long issue.
- Move all common codes from subdrivers to the main driver.
- Change the commit log to "add main and sys_east driver" to indicate
  the commit of both main and sys-east driver.
- Turn pin_to_hwirq macro to a static inline function to hide gpio
  internal detail, and also, for easier code readability.
- Change "JH8100_PADCFG_BIAS" to "JH8100_PADCFG_BIAS_MASK".
- Change "#define JH8100_PADCFG_DS_4MA   BIT(1)" to
  #define JH8100_PADCFG_DS_4MA   (1U << 1)".
- Replace "jh8100_gpio_request" by "pinctrl_gpio_request".
- Replace "jh8100_gpio_free" by "pinctrl_gpio_free".
- Replace "jh8100_gpio_set_config" by "gpiochip_generic_config".
- Use irq_print_chip function to display irqchip name to user space.
- Use girq to represent GPIO interrupt controller.
- Update code to ensure wakeup-gpios is always an input line.
- Remove the jh8100_gpio_add_pin_ranges function and use gpio-ranges
  in device tree to provide information for GPIO core to add pin range
  for each pinctrl.
- Change "StarFive GPIO chip registered" to "StarFive JH8100 GPIO chip
  registered".

---
Alex Soo (6):
  dt-bindings: pinctrl: starfive: Add JH8100 pinctrl
  pinctrl: starfive: jh8100: add main and sys_east driver
  pinctrl: starfive: jh8100: add pinctrl driver for sys_west domain
  pinctrl: starfive: jh8100: add pinctrl driver for sys_gmac domain
  pinctrl: starfive: jh8100: add pinctrl driver for AON domain
  riscv: dts: starfive: jh8100: add pinctrl device tree nodes

 .../pinctrl/starfive,jh8100-aon-pinctrl.yaml  |  261 ++++
 .../starfive,jh8100-sys-east-pinctrl.yaml     |  223 ++++
 .../starfive,jh8100-sys-gmac-pinctrl.yaml     |  163 +++
 .../starfive,jh8100-sys-west-pinctrl.yaml     |  220 +++
 MAINTAINERS                                   |    7 +
 arch/riscv/boot/dts/starfive/jh8100-evb.dts   |    5 +
 arch/riscv/boot/dts/starfive/jh8100-pinfunc.h |  418 ++++++
 arch/riscv/boot/dts/starfive/jh8100.dtsi      |   47 +
 drivers/pinctrl/starfive/Kconfig              |   59 +
 drivers/pinctrl/starfive/Makefile             |    6 +
 .../starfive/pinctrl-starfive-jh8100-aon.c    |  154 +++
 .../pinctrl-starfive-jh8100-sys-east.c        |  224 ++++
 .../pinctrl-starfive-jh8100-sys-gmac.c        |   93 ++
 .../pinctrl-starfive-jh8100-sys-west.c        |  168 +++
 .../starfive/pinctrl-starfive-jh8100.c        | 1181 +++++++++++++++++
 .../starfive/pinctrl-starfive-jh8100.h        |  105 ++
 .../pinctrl/starfive,jh8100-pinctrl.h         |  103 ++
 17 files changed, 3437 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/starfive,jh8100-aon-pinctrl.yaml
 create mode 100644 Documentation/devicetree/bindings/pinctrl/starfive,jh8100-sys-east-pinctrl.yaml
 create mode 100644 Documentation/devicetree/bindings/pinctrl/starfive,jh8100-sys-gmac-pinctrl.yaml
 create mode 100644 Documentation/devicetree/bindings/pinctrl/starfive,jh8100-sys-west-pinctrl.yaml
 create mode 100644 arch/riscv/boot/dts/starfive/jh8100-pinfunc.h
 create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jh8100-aon.c
 create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-east.c
 create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-gmac.c
 create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jh8100-sys-west.c
 create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jh8100.c
 create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jh8100.h
 create mode 100644 include/dt-bindings/pinctrl/starfive,jh8100-pinctrl.h

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2.43.0