[PATCH v5 0/9] Add support for MT6392 PMIC

[Luca Leonardo Scorcia]

The MediaTek MT6392 PMIC is usually found on devices powered by
the MT8516/MT8167 SoC and is yet another MT6323/MT6397 variant.

This series is mostly based around patches submitted a couple
years ago by Fabien Parent and not merged and from Val Packett's
submission from Jan 2025 that included extra cleanups, fixes, and a
new dtsi file similar to ones that exist for other PMICs. Some
comments weren't addressed and the series was ultimately not merged.

This series only enables four functions: regulators, keys, pinctrl
and RTC.

I added a handful of device tree improvements to fix some dtbs_check
errors, added support for the pinctrl device and addressed the comments
from last year's reviews.

The series has been tested on Xiaomi Mi Smart Clock X04G.

Changes in v5:
- Double checked regulator driver with data sheet and Android sources.
  The data sheet I have misses a lot of register descriptions, but
  Android sources have been helpful to fill the gaps
- Reintroduced the required attribute for the regulator compatible
  in the bindings
- Fixed the missing reference to the MT6392 schema
- Fixed casts/unused vars reported by kernel test robot
- Removed Reviewed-by tags from the regulator patches as they have been
  modified in this version

Changes in v4 [4]:
- Dropped usage of the regulator compatible
- Fixed commit messages text to properly reference the target subsystem
- Added supply rails to the regulator
- Reworked the regulator schema and PMIC dtsi. Now all supplies are
  documented and the schema no longer includes voltage information
- Removed redundant ldo- / buck- prefixes
- Renamed the pinfunc header to mediatek,mt6392-pinfunc.h
- Modified the MFD driver to use a simple identifier in the of_match
  data properties

Changes in v3 [3]:
- Added pinctrl device
- Changed mt6397-rtc fallback to mt6323-rtc
- Added schema for regulators
- Fixed checkpatch issues

Changes in v2 [2]:
- Replaced explicit compatibles with fallbacks

Initial version: [1]

[1] https://lore.kernel.org/linux-mediatek/cover.1771865014.git.l.scorcia@gmail.com/
[2] https://lore.kernel.org/linux-mediatek/20260306120521.163654-1-l.scorcia@gmail.com/
[3] https://lore.kernel.org/linux-mediatek/20260317184507.523060-1-l.scorcia@gmail.com/
[4] https://lore.kernel.org/linux-mediatek/20260330083429.359819-1-l.scorcia@gmail.com/

Fabien Parent (4):
  dt-bindings: mfd: mt6397: Add MT6392 PMIC
  dt-bindings: input: mtk-pmic-keys: Add MT6392 PMIC keys
  mfd: mt6397: Add support for MT6392 PMIC
  regulator: Add MediaTek MT6392 regulator

Luca Leonardo Scorcia (3):
  regulator: dt-bindings: Add MediaTek MT6392 PMIC
  dt-bindings: pinctrl: mediatek,mt65xx: Add MT6392 pinctrl
  pinctrl: mediatek: mt6397: Add MediaTek MT6392

Val Packett (2):
  input: keyboard: mtk-pmic-keys: Add MT6392 support
  arm64: dts: mediatek: Add MediaTek MT6392 PMIC dtsi

 .../bindings/input/mediatek,pmic-keys.yaml    |   1 +
 .../bindings/mfd/mediatek,mt6397.yaml         |  27 +-
 .../pinctrl/mediatek,mt65xx-pinctrl.yaml      |   1 +
 .../regulator/mediatek,mt6392-regulator.yaml  |  76 ++
 arch/arm64/boot/dts/mediatek/mt6392.dtsi      |  73 ++
 drivers/input/keyboard/mtk-pmic-keys.c        |  17 +
 drivers/mfd/mt6397-core.c                     | 118 ++-
 drivers/mfd/mt6397-irq.c                      |   8 +
 drivers/pinctrl/mediatek/pinctrl-mt6397.c     |  37 +-
 drivers/pinctrl/mediatek/pinctrl-mtk-mt6392.h |  64 ++
 drivers/regulator/Kconfig                     |   9 +
 drivers/regulator/Makefile                    |   1 +
 drivers/regulator/mt6392-regulator.c          | 740 ++++++++++++++++++
 .../pinctrl/mediatek,mt6392-pinfunc.h         |  39 +
 .../regulator/mediatek,mt6392-regulator.h     |  24 +
 include/linux/mfd/mt6392/core.h               |  42 +
 include/linux/mfd/mt6392/registers.h          | 487 ++++++++++++
 include/linux/mfd/mt6397/core.h               |   1 +
 include/linux/regulator/mt6392-regulator.h    |  42 +
 19 files changed, 1776 insertions(+), 31 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/regulator/mediatek,mt6392-regulator.yaml
 create mode 100644 arch/arm64/boot/dts/mediatek/mt6392.dtsi
 create mode 100644 drivers/pinctrl/mediatek/pinctrl-mtk-mt6392.h
 create mode 100644 drivers/regulator/mt6392-regulator.c
 create mode 100644 include/dt-bindings/pinctrl/mediatek,mt6392-pinfunc.h
 create mode 100644 include/dt-bindings/regulator/mediatek,mt6392-regulator.h
 create mode 100644 include/linux/mfd/mt6392/core.h
 create mode 100644 include/linux/mfd/mt6392/registers.h
 create mode 100644 include/linux/regulator/mt6392-regulator.h

-- 
2.43.0