[PATCH v3 0/5] sh: mach-rsk: rsk7203: switch to using static device property, drop legacy gpio API

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

This series of patches converts rsk7203 to use static device properties
for its devices, including gpio-keys and gpio-leds, and removing
dependency on legacy gpio API (in favor of gpiod API).

To configure pin functions the board is switched to use gpio-hogs, as
doing full conversion to pinmux is too challenging without access to
hardware.

Changes in v3:
- Avoided using inline compound literals for property entries in
  software node initializers to fix compilation errors with older GCC
  compilers (GCC < 14).
- Collected Acked-by and Reviewed-by trailers from Bartosz Golaszewski
  and Linus Walleij.

Changes in v2:
- Added a patch to isolate the function gpiochip from the parent fwnode
  to prevent ambiguous property lookups.
- Added a patch attaching a software node to the main PFC gpiochip device.
- Adjusted the board setup to use the PFC software node for LEDs and
  GPIO keys instead of creating a standalone node.
- Added support to sh-pfc for configuring the secondary "function"
  gpiochip via a "functions" child software node.
- Converted board pin configuration from legacy gpio_request() to GPIO
  hogs, using postcore_initcall to ensure nodes are available during
  driver probe.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
Dmitry Torokhov (5):
      pinctrl: renesas: gpio: isolate function gpiochip from parent fwnode
      sh: pfc: attach software node to the GPIO chip
      sh: mach-rsk: rsk7203: use static device properties for LEDs and GPIO buttons
      pinctrl: renesas: gpio: support software nodes for function GPIOs
      sh: mach-rsk: rsk7203: convert pin configuration to using software nodes

 arch/sh/boards/mach-rsk/devices-rsk7203.c | 314 ++++++++++++++++++++++--------
 arch/sh/include/cpu-common/cpu/pfc.h      |   3 +
 arch/sh/kernel/cpu/pfc.c                  |  20 +-
 drivers/pinctrl/renesas/gpio.c            |  28 +++
 4 files changed, 281 insertions(+), 84 deletions(-)
---
base-commit: 6474fa070f2b8013b4b87350b775b8c3be6e8aac
change-id: 20260310-rsk7203-properties-82bf2c12b985

Thanks.

-- 
Dmitry