[PATCH v6 00/10] Add MediaTek MT6357 PMIC support

Alexandre Mergnat amergnat at baylibre.com
Fri Nov 25 07:10:11 PST 2022 

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 v6:
- Fix typo in documentations.
- Remove mediatek,mt6397-rtc.yaml example.
- Align pwrap convertion with the original .txt file.
- Remove unecessary include in the mt6357-regulator driver.
- Link to v5: https://lore.kernel.org/r/20221005-mt6357-support-v5-0-8210d955dd3d@baylibre.com

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

---
Alexandre Mergnat (6):
      dt-bindings: rtc: mediatek: convert MT6397 rtc documentation
      dt-bindings: rtc: mediatek: add MT6357 support
      dt-bindings: soc: mediatek: convert pwrap documentation
      dt-bindings: mfd: mediatek: Add bindings for MT6357 PMIC
      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       | 294 +++++++++++++
 .../bindings/rtc/mediatek,mt6397-rtc.yaml          |  36 ++
 .../devicetree/bindings/rtc/rtc-mt6397.txt         |  31 --
 .../bindings/soc/mediatek/mediatek,pwrap.yaml      | 147 +++++++
 .../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               | 453 +++++++++++++++++++++
 include/linux/regulator/mt6357-regulator.h         |  51 +++
 17 files changed, 1122 insertions(+), 114 deletions(-)
---
base-commit: f6e37bb630736d880a319b7845e8837c8536dd59
change-id: 20221005-mt6357-support-55308b82e33f

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

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