[PATCH v3 0/8] pinctrl: Add T-Head TH1520 SoC pin controllers

[Drew Fustini]

This adds a pin control driver created by Emil for the T-Head TH1520
RISC-V SoC used on the Lichee Pi 4A and BeagleV Ahead boards and updates
the device trees to make use of it.

Changes in v3:
 - Add Rb from Rob for the binding
 - Rebase on 6.12-rc1 which enables AP_SUBSYS clock controller in dts
 - Update dts to use AP_SUBSYS clock controller instead of fixed clocks
 - Remove unneeded defines from the driver for dt unit addresses
 - Link to v2: https://lore.kernel.org/linux-riscv/20240914-th1520-pinctrl-v2-0-3ba67dde882c@tenstorrent.com/

Changes in v2:
 - Add thead,pad-group device tree property
 - Change driver to use the thead,pad-group property instead of the unit
   address to identify the pad group of the pin controller being probed
 - Return -EINVAL if no pin group can be determined during probe. In v1,
   there was a bug that instead returned an unitialized variable
 - Link to v1: https://lore.kernel.org/r/20240902-th1520-pinctrl-v1-0-639bf83ef50a@tenstorrent.com

Signed-off-by: Drew Fustini <dfustini at tenstorrent.com>

---
Emil Renner Berthing (8):
      dt-bindings: pinctrl: Add thead,th1520-pinctrl bindings
      pinctrl: Add driver for the T-Head TH1520 SoC
      riscv: dts: thead: Add TH1520 pin control nodes
      riscv: dts: thead: Add TH1520 GPIO ranges
      riscv: dts: thead: Adjust TH1520 GPIO labels
      riscv: dts: thead: Add Lichee Pi 4M GPIO line names
      riscv: dts: thead: Add TH1520 pinctrl settings for UART0
      riscv: dtb: thead: Add BeagleV Ahead LEDs

 .../bindings/pinctrl/thead,th1520-pinctrl.yaml     | 176 ++++
 MAINTAINERS                                        |   2 +
 arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts |  87 ++
 .../boot/dts/thead/th1520-lichee-module-4a.dtsi    |  43 +
 arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts  |  28 +
 arch/riscv/boot/dts/thead/th1520.dtsi              |  65 +-
 drivers/pinctrl/Kconfig                            |  13 +
 drivers/pinctrl/Makefile                           |   1 +
 drivers/pinctrl/pinctrl-th1520.c                   | 907 +++++++++++++++++++++
 9 files changed, 1306 insertions(+), 16 deletions(-)
---
base-commit: 9852d85ec9d492ebef56dc5f229416c925758edc
change-id: 20240930-th1520-pinctrl-d42163ea2c11

Best regards,
-- 
Drew Fustini <dfustini at tenstorrent.com>