[RFC 0/8] mfd: Add support for Khadas Microcontroller

[Neil Armstrong]

The new Khadas VIM2, VIM3 and Edge boards embeds an on-board microcontroller
connected via I2C.

This Microcontroller is present on the Khadas VIM1, VIM2, VIM3 and Edge
boards.

It has multiple boot control features like password check, power-on
options, power-off control and system FAN control on recent boards.

Thie serie adds :
- the bindings
- the MFD driver
- the HWMON cell driver
- the NVMEM cell driver
- updates MAINTAINERS
- add support into the Khadas VIM3/VIM3L DT

Neil Armstrong (8):
  dt-bindings: mfd: add Khadas Microcontroller bindings
  mfd: add support for the Khadas System control Microcontroller
  hwmon: add support for the MCU controlled FAN on Khadas boards
  nvmem: add support for the Khadas MCU Programmable User Memory
  MAINTAINERS: add myself as maintainer for Khadas MCU drivers
  arm64: dts: meson-g12b: move G12B thermal nodes to meson-g12b.dtsi
  arm64: dts: meson-sm1: add cpu thermal nodes
  arm64: dts: meson-khadas-vim3: add Khadas MCU nodes

 .../devicetree/bindings/mfd/khadas,mcu.yaml   |  44 ++++
 MAINTAINERS                                   |  11 +
 arch/arm64/boot/dts/amlogic/meson-g12.dtsi    |  23 --
 arch/arm64/boot/dts/amlogic/meson-g12b.dtsi   |  22 ++
 .../boot/dts/amlogic/meson-khadas-vim3.dtsi   |  23 ++
 arch/arm64/boot/dts/amlogic/meson-sm1.dtsi    |  24 ++
 drivers/hwmon/Kconfig                         |   9 +
 drivers/hwmon/Makefile                        |   1 +
 drivers/hwmon/khadas-mcu-fan.c                | 230 ++++++++++++++++++
 drivers/mfd/Kconfig                           |  14 ++
 drivers/mfd/Makefile                          |   1 +
 drivers/mfd/khadas-mcu.c                      | 143 +++++++++++
 drivers/nvmem/Kconfig                         |   8 +
 drivers/nvmem/Makefile                        |   2 +
 drivers/nvmem/khadas-mcu-user-mem.c           | 128 ++++++++++
 include/linux/mfd/khadas-mcu.h                |  91 +++++++
 16 files changed, 751 insertions(+), 23 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mfd/khadas,mcu.yaml
 create mode 100644 drivers/hwmon/khadas-mcu-fan.c
 create mode 100644 drivers/mfd/khadas-mcu.c
 create mode 100644 drivers/nvmem/khadas-mcu-user-mem.c
 create mode 100644 include/linux/mfd/khadas-mcu.h

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2.22.0