[PATCH v4 0/3] Add Richtek RT5120 PMIC support

[cy_huang]

From: ChiYuan Huang <cy_huang@xxxxxxxxxxx>

This patch series is to add Richtek RT5120 PMIC support.
In RT5120, it integrates four channels of buck converter, one channel of LDO,
and one external enable channel to control the external power source.

rt5120-regulator can be referred in the below link
Link: https://lore.kernel.org/lkml/165599062767.127406.12571486984170083213.b4-ty@xxxxxxxxxx/

Since v4:
- Add "Copyright" string and refine for GPL version string.
- Refine the comma usage in mfd. For the last uncertain terminated element in
  struct arrays, put the comma for it to keep the extensibility.

Since v3:
- Use a 'dev' variable and dev_err_probe to decrease the LOC in mfd.
- Simplify the power key irq handler key report
- Since press and release irq not needed to keep in private data, change 'press',
  'release' irq as local variable only.
- Fix Kconfig typo for pwrkey.

Since v2:
- Add 'unevaluatedProperties: false' for regulator buck1~4/ldo/exten.
- Fix indention and remove status for powerkey.
- Refine powerkey description for more HW details.
- For the regulator property parsing, use of_property_read_u32 instead.
- Not to overwrite regulator constraint.
- Refine regulator desc coding.

ChiYuan Huang (3):
  dt-binding: mfd: Add Richtek RT5120 PMIC support
  mfd: rt5120: Add Richtek PMIC support
  input: misc: rt5120: Add power key support

 .../devicetree/bindings/mfd/richtek,rt5120.yaml    | 178 +++++++++++++++++++++
 drivers/input/misc/Kconfig                         |   9 ++
 drivers/input/misc/Makefile                        |   1 +
 drivers/input/misc/rt5120-pwrkey.c                 | 109 +++++++++++++
 drivers/mfd/Kconfig                                |  12 ++
 drivers/mfd/Makefile                               |   1 +
 drivers/mfd/rt5120.c                               | 124 ++++++++++++++
 7 files changed, 434 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/richtek,rt5120.yaml
 create mode 100644 drivers/input/misc/rt5120-pwrkey.c
 create mode 100644 drivers/mfd/rt5120.c

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2.7.4