[v3,0/4] MediaTek Helio X10 MT6795 - MT6331/6332 Regulators

In an effort to give some love to the apparently forgotten MT6795 SoC,
I am upstreaming more components that are necessary to support platforms
powered by this one apart from a simple boot to serial console.

This series adds support for the regulators found in MT6331 and MT6332
main/companion PMICs.

Adding support to each driver in each subsystem is done in different
patch series as to avoid spamming uninteresting patches to maintainers.

This series depends on another two series series [1], [2] named
"MediaTek Helio X10 MT6795 - MT6331/6332 PMIC Wrapper" and
"MediaTek Helio X10 MT6795 - MT6331/6332 PMIC MFD integration"

Tested on a MT6795 Sony Xperia M5 (codename "Holly") smartphone.

[1]: https://lore.kernel.org/lkml/20220520124039.228314-1-angelogioacchino.delregno@collabora.com/T/#t
[2]: https://lore.kernel.org/lkml/20220520124617.228808-1-angelogioacchino.delregno@collabora.com/T/#t

Changes in v3:
 - Sorry, one of the commits picked both the pre-rename file and
   the new one... the v3 fixes the mt6332 bindings commit.
 - Changed comment style on top for mt633[12]-regulator.c as
   suggested (missed that in v2)

Changes in v2:
 - Refactored description in dt-bindings
 - Simplified get_status() function and removed callback
   where not needed
 - Simplified set_mode()/get_mode() functions and removed
   callback where not needed
 - Added new regulator_ops for no_qi (no .get_status) and
   for no_ms (no .{get, set}_mode)
 - Fixed vsel mask on some regulators and removed pattern of
   repeated voltage entries present in some voltage tables,
   avoiding to set higher bits for safety
 - Reordered regulators (and some formatting fixes) in
   mt6331-regulator.c in per-type alphabetic order

AngeloGioacchino Del Regno (4):
  dt-bindings: regulator: Add bindings for MT6331 regulator
  regulator: Add driver for MT6331 PMIC regulators
  dt-bindings: regulator: Add bindings for MT6332 regulator
  regulator: Add driver for MT6332 PMIC regulators

 .../regulator/mediatek,mt6331-regulator.yaml  | 273 ++++++++++
 .../regulator/mediatek,mt6332-regulator.yaml  | 112 ++++
 drivers/regulator/Kconfig                     |  18 +
 drivers/regulator/Makefile                    |   2 +
 drivers/regulator/mt6331-regulator.c          | 507 ++++++++++++++++++
 drivers/regulator/mt6332-regulator.c          | 422 +++++++++++++++
 include/linux/regulator/mt6331-regulator.h    |  46 ++
 include/linux/regulator/mt6332-regulator.h    |  27 +
 8 files changed, 1407 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/mediatek,mt6331-regulator.yaml
 create mode 100644 Documentation/devicetree/bindings/regulator/mediatek,mt6332-regulator.yaml
 create mode 100644 drivers/regulator/mt6331-regulator.c
 create mode 100644 drivers/regulator/mt6332-regulator.c
 create mode 100644 include/linux/regulator/mt6331-regulator.h
 create mode 100644 include/linux/regulator/mt6332-regulator.h