[PATCH v4 0/7] pinctrl: rockchip: Add RK3506 and RV1126B pinctrl and RMIO support

[Ye Zhang <ye.zhang@rock-chips.com>]

This series adds pinctrl support for the Rockchip RK3506 and RV1126B SoC,
and adds support for RMIO (Rockchip Matrix I/O).

The series includes:
- RK3506 pinctrl driver implementation
- RV1126B pinctrl driver implementation
- RMIO controller binding and driver support
- GPIO driver update to support new version GPIO

Note on grouping:
The RV1126B support patches are included in this series because the RV1126B
pinctrl driver implementation depends on the PIN_BANK_IOMUX_FLAGS_OFFSET_DRV_FLAGS
macro, which is introduced in the RK3506 support patches. Splitting these
patches into separate series would break the build for RV1126B if applied
independently.

Changes in v4:
- Remove rockchip,rmio.yaml and drop the separate RMIO child node.
- Remove rockchip,rk3506-rmio.h
- Refactor RK3506 RMIO implementation:
  - RMIO is now handled as a separate list within the pin group, allowing
    flexible mapping (e.g., multiple RMIO configs per group).
  - The driver now retrieves the RMIO regmap via a syscon phandle defined
    in the pinctrl node.
- Add RK3506 pinctrl and rmio DTS to match the new RMIO binding format.

Changes in v3:
- Drop already merged patches (rk3506 basic support).
- Remove unhelpful mappings in rockchip,rk3506-rmio.h
- Improve YAML schema: fix constraints and examples for RMIO.

Changes in v2:
- Added RV1126B pinctrl support (patches 3 and 4)
- Updated GPIO driver to support new version GPIO (patch 5)
- Added header file for RK3506 RMIO (patch 6)
- RMIO is now implemented as a separate pinctrl device (patches 7, 8)

Ye Zhang (7):
  dt-bindings: pinctrl: Add rv1126b pinctrl support
  pinctrl: rockchip: Add rv1126b pinctrl support
  arm64: dts: rockchip: rv1126b: Add pinconf and pinctrl dtsi for
    rv1126b
  gpio: rockchip: support new version GPIO
  dt-bindings: pinctrl: rockchip: Add rk3506 rmio support
  pinctrl: rockchip: Add RK3506 RMIO support
  ARM: dts: rockchip: rk3506: Add pinctrl and rmio dtsi for rk3506

 .../bindings/pinctrl/rockchip,pinctrl.yaml    |    25 +
 .../dts/rockchip/rk3506-pinctrl-rmio.dtsi     | 25162 ++++++++++++++++
 .../arm/boot/dts/rockchip/rk3506-pinctrl.dtsi |  1795 ++
 .../boot/dts/rockchip/rv1126b-pinconf.dtsi    |   660 +
 .../boot/dts/rockchip/rv1126b-pinctrl.dtsi    |  3218 ++
 drivers/gpio/gpio-rockchip.c                  |     2 +
 drivers/pinctrl/pinctrl-rockchip.c            |   282 +-
 drivers/pinctrl/pinctrl-rockchip.h            |    20 +
 8 files changed, 31160 insertions(+), 4 deletions(-)
 create mode 100644 arch/arm/boot/dts/rockchip/rk3506-pinctrl-rmio.dtsi
 create mode 100644 arch/arm/boot/dts/rockchip/rk3506-pinctrl.dtsi
 create mode 100644 arch/arm64/boot/dts/rockchip/rv1126b-pinconf.dtsi
 create mode 100644 arch/arm64/boot/dts/rockchip/rv1126b-pinctrl.dtsi

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2.34.1