[PATCH v5 00/10] Add MediaTek MT6357 PMIC support

[Alexandre Mergnat <amergnat@baylibre.com>]

Hi,
This patch series adds MFD, PMIC keys, and regulator support for MT6357.
MT6357 is a MediaTek PMIC very similar to MT6358.

Currently, MTK bindings related to the PMICs are not converted yet (still .txt):

soc/mediatek/pwrap.txt (all PMIC parent)
      |
      V
mfd/mt6397.txt (support lot of mt63XX PMIC)
      +---------------+----------------+---...
      V               V                V
regulator/...      rtc/...          codec/...

1) Convert pwrap to yaml is ok.

2) For the PMIC bindings, there are two option:
- Convert mt6397.txt to mediatek,mt6397.yaml and continue to support multiple
  PMIC with only one file. IMO, the file will be hard to read because
  the supported features aren't the same for each PMIC.

- Make a binding file for each PMIC ref:
    - mfd/mediatek,mt6357.yaml
    - mfd/mediatek,mt6358.yaml
    - ...

3) All PMIC daughter bindings (regulator, rtc, codec, led, ...) aren't fully
converted yet. Refering to the two PMIC convertion options above:
- To be clean, all daughter bindings should be converted. This is hard because
  a good understanding of each device is requiered to write efficient bindings.
- Only daughter bindings supported by the added PMIC should be converted, that
  allows to do the task conversion step by step.

In the V4 of this serie, I chose the second option.

Regards,
Alex

Changes in v5:
- Add missing maintainers
- Improve RTC binding by adding rtc.yaml ref and start-year property
- Split the txt->yaml conversion in one commit and the addition of the
  new mt6357-rtc compatible in another commit.
- Improve PWRAP binding:
  - clocks and clock-name have been refactored.
  - reset-names is now properly dependent to resets.
  - additionalProperties change from true to false.
  - change example for a most recent and popular SoC.
  - "allOf" part has been simplified.
- Pass binding tests with the updated tools. Here the command:
  "make DT_CHECKER_FLAGS=-m dt_binding_check"
- Link to v4: https://lore.kernel.org/r/20221005-mt6357-support-v4-0-5d2bb58e6087@baylibre.com

Changes in v4:
- "dt-bindings: mfd: mt6397: add binding for MT6357" has been applied
  by Lee Jones
- All fixed regulator are now refering to fixed-regulator.yaml
- vfe28 and vcamio18 regulators have been added
- pwrap binding has been converted and mt8365 support has been added
- Change node names for mt8173 and mt6358 SoC to be consistent with
  pwrap documentation.
- mt6357 PMIC binding has been created
- mt6397 RTC binding has been converted and mt6357 support has been added
- Link to v3: https://lore.kernel.org/r/20221005-mt6357-support-v3-0-7e0bd7c315b2@baylibre.com

Changes in v3:
- To be consistent with regulator/driver.h and helper.c, shift
  variables have been removed and the mask values have been directly shifted.
- Remove index tables and rework volt tables to use set/get helper functions.
- Add comment to structure and function.
- Fix Fabien Parent mail address.
- Link to v2: https://lore.kernel.org/r/20221005-mt6357-support-v2-0-f17ba2d2d0a9@baylibre.com

Changes in v2:
- Rebase
- Fix typo
- Remove dependencies with https://lore.kernel.org/all/20220415153629.1817202-1-fparent@baylibre.com/
  which is no longer relevant.

Previous versions:
v1 - https://lore.kernel.org/all/20220531124959.202787-1-fparent@baylibre.com/

To: Lee Jones <lee@kernel.org>
To: Rob Herring <robh+dt@kernel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
To: Matthias Brugger <matthias.bgg@gmail.com>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Chen Zhong <chen.zhong@mediatek.com>
To: Liam Girdwood <lgirdwood@gmail.com>
To: Mark Brown <broonie@kernel.org>
To: Fabien Parent <fabien.parent@linaro.org>
To: Alessandro Zummo <a.zummo@towertech.it>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Sean Wang <sean.wang@mediatek.com>
To: Pavel Machek <pavel@ucw.cz>
To: Tianping Fang <tianping.fang@mediatek.com>
To: Flora Fu <flora.fu@mediatek.com>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-input@vger.kernel.org
Cc: Fabien Parent <fparent@baylibre.com>
Cc: Rob Herring <robh@kernel.org>
Cc: linux-rtc@vger.kernel.org
Cc: linux-leds@vger.kernel.org
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>

---
Alexandre Mergnat (6):
      dt-bindings: rtc: mediatek: convert MT6397 rtc documentation
      dt-bindings: rtc: mediatek: add MT6357 support
      dt-bindings: mfd: mediatek: Add bindings for MT6357 PMIC
      dt-bindings: soc: mediatek: convert pwrap documentation
      arm64: dts: mt6358: change node names
      arm64: dts: mt8173: change node name

Fabien Parent (4):
      dt-bindings: input: mtk-pmic-keys: add binding for MT6357 PMIC
      regulator: dt-bindings: Add binding schema for mt6357 regulators
      regulator: add mt6357 regulator
      Input: mtk-pmic-keys: add MT6357 support

 .../bindings/input/mediatek,pmic-keys.yaml         |   1 +
 .../devicetree/bindings/leds/leds-mt6323.txt       |   2 +-
 .../devicetree/bindings/mfd/mediatek,mt6357.yaml   | 105 +++++
 Documentation/devicetree/bindings/mfd/mt6397.txt   |   4 +-
 .../regulator/mediatek,mt6357-regulator.yaml       | 293 +++++++++++++
 .../bindings/rtc/mediatek,mt6397-rtc.yaml          |  44 ++
 .../devicetree/bindings/rtc/rtc-mt6397.txt         |  31 --
 .../bindings/soc/mediatek/mediatek,pwrap.yaml      | 145 +++++++
 .../devicetree/bindings/soc/mediatek/pwrap.txt     |  75 ----
 arch/arm64/boot/dts/mediatek/mt6358.dtsi           |   6 +-
 arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi       |   2 +-
 arch/arm64/boot/dts/mediatek/mt8173-evb.dts        |   2 +-
 drivers/input/keyboard/mtk-pmic-keys.c             |  17 +
 drivers/regulator/Kconfig                          |   9 +
 drivers/regulator/Makefile                         |   1 +
 drivers/regulator/mt6357-regulator.c               | 454 +++++++++++++++++++++
 include/linux/regulator/mt6357-regulator.h         |  51 +++
 17 files changed, 1128 insertions(+), 114 deletions(-)
---
base-commit: e7f535c0775b896befb4f6765c02bc065fd26156
change-id: 20221005-mt6357-support-55308b82e33f

Best regards,
-- 
Alexandre Mergnat <amergnat@baylibre.com>