| From: |
| Oleksij Rempel <o.rempel-AT-pengutronix.de> |
| To: |
| Guenter Roeck <linux-AT-roeck-us.net>, Rob Herring <robh-AT-kernel.org>, Krzysztof Kozlowski <krzk+dt-AT-kernel.org>, Conor Dooley <conor+dt-AT-kernel.org>, Lee Jones <lee-AT-kernel.org>, Peter Rosin <peda-AT-axentia.se>, Linus Walleij <linusw-AT-kernel.org> |
| Subject: |
| [PATCH v6 0/7] mfd: Add support for NXP MC33978/MC34978 MSDI |
| Date: |
| Sat, 21 Mar 2026 07:51:39 +0100 |
| Message-ID: |
| <20260321065146.3918882-1-o.rempel@pengutronix.de> |
| Cc: |
| Oleksij Rempel <o.rempel-AT-pengutronix.de>, kernel-AT-pengutronix.de, linux-kernel-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-hwmon-AT-vger.kernel.org, linux-gpio-AT-vger.kernel.org, David Jander <david-AT-protonic.nl> |
| Archive-link: |
| Article |
This series adds support for the NXP MC33978/MC34978 Multiple Switch Detection
Interface (MSDI) via the MFD framework.
Architecture overview:
* mfd: Core driver handling 2-frame pipelined SPI, regulator sequencing, and
linear irq_domain. Harvests status bits from SPI MISO MSB.
* pinctrl: Exposes 22 physical switch inputs as standard GPIOs. Proxies IRQs to
the MFD domain.
* hwmon: Exposes thermal limits, VBATP/VDDQ voltage boundaries, and dynamic
fault alarms.
* mux: Controls the 24-to-1 AMUX routing analog signals (switch voltages,
temperature, VBATP) to an external ADC.
Initial pinctrl implementation by David Jander, reworked into this MFD
architecture.
Best regards,
Oleksij
David Jander (1):
pinctrl: add NXP MC33978/MC34978 pinctrl driver
Oleksij Rempel (6):
dt-bindings: pinctrl: add NXP MC33978/MC34978 MSDI
mfd: add NXP MC33978/MC34978 core driver
pinctrl: core: Make pin group callbacks optional for pin-only drivers
gpio: gpiolib: split child IRQ setup in hierarchical alloc
hwmon: add NXP MC33978/MC34978 driver
mux: add NXP MC33978/MC34978 AMUX driver
.../bindings/pinctrl/nxp,mc33978.yaml | 153 +++
drivers/gpio/gpiolib.c | 24 +-
drivers/hwmon/Kconfig | 10 +
drivers/hwmon/Makefile | 1 +
drivers/hwmon/mc33978-hwmon.c | 550 +++++++++++
drivers/mfd/Kconfig | 15 +
drivers/mfd/Makefile | 2 +
drivers/mfd/mc33978.c | 912 ++++++++++++++++++
drivers/mux/Kconfig | 14 +
drivers/mux/Makefile | 2 +
drivers/mux/mc33978-mux.c | 131 +++
drivers/pinctrl/Kconfig | 14 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/core.c | 41 +-
drivers/pinctrl/pinconf.c | 9 +-
drivers/pinctrl/pinctrl-mc33978.c | 747 ++++++++++++++
include/linux/mfd/mc33978.h | 92 ++
17 files changed, 2699 insertions(+), 19 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pinctrl/nxp,mc33978.yaml
create mode 100644 drivers/hwmon/mc33978-hwmon.c
create mode 100644 drivers/mfd/mc33978.c
create mode 100644 drivers/mux/mc33978-mux.c
create mode 100644 drivers/pinctrl/pinctrl-mc33978.c
create mode 100644 include/linux/mfd/mc33978.h
--
2.47.3
