From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Guenter Roeck <linux@roeck-us.net>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Lee Jones <lee@kernel.org>,
Peter Rosin <peda@axentia.se>, Linus Walleij <linusw@kernel.org>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>,
kernel@pengutronix.de, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, linux-hwmon@vger.kernel.org,
linux-gpio@vger.kernel.org, David Jander <david@protonic.nl>
Subject: [PATCH v8 0/6] mfd: Add support for NXP MC33978/MC34978 MSDI
Date: Sun, 29 Mar 2026 11:05:55 +0200 [thread overview]
Message-ID: <20260329090601.532477-1-o.rempel@pengutronix.de> (raw)
changes v7:
- drop gpiolib irq fix and make pinctrl more robust against NULL point
dereference.
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 (5):
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
hwmon: add NXP MC33978/MC34978 driver
mux: add NXP MC33978/MC34978 AMUX driver
.../bindings/pinctrl/nxp,mc33978.yaml | 158 +++
drivers/hwmon/Kconfig | 10 +
drivers/hwmon/Makefile | 1 +
drivers/hwmon/mc33978-hwmon.c | 548 ++++++++++
drivers/mfd/Kconfig | 15 +
drivers/mfd/Makefile | 2 +
drivers/mfd/mc33978.c | 988 ++++++++++++++++++
drivers/mux/Kconfig | 14 +
drivers/mux/Makefile | 2 +
drivers/mux/mc33978-mux.c | 136 +++
drivers/pinctrl/Kconfig | 14 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/core.c | 41 +-
drivers/pinctrl/pinconf.c | 9 +-
drivers/pinctrl/pinctrl-mc33978.c | 839 +++++++++++++++
include/linux/mfd/mc33978.h | 92 ++
16 files changed, 2863 insertions(+), 7 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
next reply other threads:[~2026-03-29 9:06 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-29 9:05 Oleksij Rempel [this message]
2026-03-29 9:05 ` [PATCH v8 1/6] dt-bindings: pinctrl: add NXP MC33978/MC34978 MSDI Oleksij Rempel
2026-03-29 10:30 ` Rob Herring (Arm)
2026-03-29 9:05 ` [PATCH v8 2/6] mfd: add NXP MC33978/MC34978 core driver Oleksij Rempel
2026-03-29 9:05 ` [PATCH v8 3/6] pinctrl: core: Make pin group callbacks optional for pin-only drivers Oleksij Rempel
2026-03-29 9:05 ` [PATCH v8 4/6] pinctrl: add NXP MC33978/MC34978 pinctrl driver Oleksij Rempel
2026-03-29 9:06 ` [PATCH v8 5/6] hwmon: add NXP MC33978/MC34978 driver Oleksij Rempel
2026-03-29 15:31 ` Guenter Roeck
2026-03-29 9:06 ` [PATCH v8 6/6] mux: add NXP MC33978/MC34978 AMUX driver Oleksij Rempel
2026-03-29 15:34 ` [PATCH v8 0/6] mfd: Add support for NXP MC33978/MC34978 MSDI Guenter Roeck
2026-03-31 15:13 ` Rob Herring
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