[PATCH v3 0/6] add support for pf1550 PMIC MFD-based drivers

Samuel Kayode via B4 Relay
2025-05-27T22:26:24Z

This series adds support for pf1550 PMIC. It provides the core mfd driver and a
set of three sub-drivers for the regulator, power supply and input subsystems.

Patch 1 adds the DT binding document for the PMIC. Patches 2-5 adds the
pertinent drivers. Last patch adds a MAINTAINERS entry for the drivers.

Changes since v1:
- DT bindings for all devices included
- Add onkey driver
- Add driver for the regulators
- Ensure charger is activated as some variants have it off by default
- Update mfd and charger driver per feedback from eballetbo@gmail.com
- Add myself as maintainer for these drivers
- Link to v1: https://lore.kernel.org/1523974819-8711-1-git-send-email-abel.vesa@nxp.com/

Changes since v2:
- Rebase on recent mainline kernel v6.15
- Single yaml file containing dt bindings for all pf1550 devices
- irq mapping done in MFD driver as suggested by Dmitry Torokhov
- Drop unnecessary includes in drivers
- Replace dev_err with dev_err_probe in probe method of drivers
- Drop compatible string from drivers of the sub-devices
- Remove dependency on OF from drivers of the sub-devices
- onkey: move driver from input/keyboard into input/misc
- onkey: remove dependency on OF
- onkey: use onkey virqs instead of central irq
- onkey: fix integer overflow for regmap_write when unmasking
interrupts during pf1550_onkey_resume
- charger: add support for monitored-battery which is used in setting
a constant voltage for the charger.
- Address other feedback from Dmitry Torokhov and Krzysztof Kozlowski
- Link to v2: https://lore.kernel.org/cover.1747409892.git.samuel.kayode@savoirfairelinux.com/

Signed-off-by: Samuel Kayode <samuel.kayode@savoirfairelinux.com>
---
Samuel Kayode (6):
dt-bindings: mfd: add pf1550
mfd: pf1550: add core mfd driver
regulator: pf1550: add support for regulator
input: pf1550: add onkey support
power: supply: pf1550: add battery charger support
MAINTAINERS: add an entry for pf1550 mfd driver

Documentation/devicetree/bindings/mfd/pf1550.yaml | 139 +++++
MAINTAINERS | 10 +
drivers/input/misc/Kconfig | 11 +
drivers/input/misc/Makefile | 1 +
drivers/input/misc/pf1550-onkey.c | 202 +++++++
drivers/mfd/Kconfig | 14 +
drivers/mfd/Makefile | 2 +
drivers/mfd/pf1550.c | 277 ++++++++++
drivers/power/supply/Kconfig | 11 +
drivers/power/supply/Makefile | 1 +
drivers/power/supply/pf1550-charger.c | 639 ++++++++++++++++++++++
drivers/regulator/Kconfig | 9 +
drivers/regulator/Makefile | 1 +
drivers/regulator/pf1550-regulator.c | 353 ++++++++++++
include/linux/mfd/pf1550.h | 241 ++++++++
15 files changed, 1911 insertions(+)
---
base-commit: 0a4b866d08c6adaea2f4592d31edac6deeb4dcbd
change-id: 20250527-pf1550-d401f0d07b80

Best regards,
--
Samuel Kayode <samuel.kayode@savoirfairelinux.com>