linux-kernel - [PATCH 0/3] regulator: Add X-Powers AXP318W PMIC support

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Message-Id: <20251021112013.2710903-1-andre.przywara@arm.com>
Date: Tue, 21 Oct 2025 12:20:09 +0100
From: Andre Przywara <andre.przywara@....com>
To: Lee Jones <lee@...nel.org>,
	Chen-Yu Tsai <wens@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Samuel Holland <samuel@...lland.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>
Cc: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Yixun Lan <dlan@...too.org>,
	devicetree@...r.kernel.org,
	linux-sunxi@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] regulator: Add X-Powers AXP318W PMIC support

This patch series adds support for the X-Powers AXP318W PMIC, which is
used recently on new boards with Allwinner SoCs (the A733).
Compared to the RFC post, this now has been tested on real hardware,
with the full regulator description for the Radxa Cubie A7A board.
This also adds the switched outputs (swout1/swout2), and fixes the DCDC
input supplies, which are combined in certain ways.
Rob, I dropped your tag on the binding tag, since there were quite some
changes.

The PMIC features 9 DCDC buck converters and 28 LDOs, plus the usual ADC,
interrupts, and power key components.
A datasheet can be found linked in this Wiki table:
https://linux-sunxi.org/AXP_PMICs

Patch 1 adds the compatible string to the binding document, and adds
the additional input supply properties.
Patch 2 is the MFD part, describing the regmap and all the interrupts.
So far we support the regulator and power key devices, the ADC and
other pieces will follow later.
Patch 3 adds the voltage regulator rails, this part is crucial to enable
any board using this PMIC, as we depend on those rails even for basic
devices.

Based on v6.18-rc1.

Please have a look!

Changelog RFC ... v1:
- tested on hardware
- adding switch outputs (swout1/swout2) (to binding and code)
- fixing DC/DC input supplies (in binding and code)

Andre Przywara (3):
  dt-bindings: mfd: x-powers,axp152: Document AXP318W
  mfd: axp20x: Add support for AXP318W PMIC
  regulator: axp20x: add support for the AXP318W

 .../bindings/mfd/x-powers,axp152.yaml         |  28 ++-
 drivers/mfd/axp20x-i2c.c                      |   2 +
 drivers/mfd/axp20x.c                          |  84 +++++++++
 drivers/regulator/axp20x-regulator.c          | 170 +++++++++++++++++-
 include/linux/mfd/axp20x.h                    | 129 +++++++++++++
 5 files changed, 410 insertions(+), 3 deletions(-)

-- 
2.25.1