{"id":2218683,"url":"http://patchwork.ozlabs.org/api/1.0/covers/2218683/?format=json","project":{"id":42,"url":"http://patchwork.ozlabs.org/api/1.0/projects/42/?format=json","name":"Linux GPIO development","link_name":"linux-gpio","list_id":"linux-gpio.vger.kernel.org","list_email":"linux-gpio@vger.kernel.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260401162510.1706073-1-o.rempel@pengutronix.de>","date":"2026-04-01T16:25:04","name":"[v10,0/6] mfd: Add support for NXP MC33978/MC34978 MSDI","submitter":{"id":71360,"url":"http://patchwork.ozlabs.org/api/1.0/people/71360/?format=json","name":"Oleksij Rempel","email":"o.rempel@pengutronix.de"},"series":[{"id":498365,"url":"http://patchwork.ozlabs.org/api/1.0/series/498365/?format=json","date":"2026-04-01T16:25:07","name":"mfd: Add support for NXP MC33978/MC34978 MSDI","version":10,"mbox":"http://patchwork.ozlabs.org/series/498365/mbox/"}],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c15:e001:75::12fc:5321; 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a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775060748; c=relaxed/simple;\n\tbh=Jpv6RTniVBvt70szPgYAv0JGed4nVUgLqx8NINTIpxI=;\n\th=From:To:Cc:Subject:Date:Message-ID:MIME-Version;\n b=chId1zpxmrRyVY9zebePz1440LWdjxTKwr50OxqP0kwNHKnaVCxNcMHJHaw3+6neF80o3BfhbQkUywyQrU5Q8uk4c2sEbSPVVl4XWNGO3DYbe6aXfuFLx5//eV7aV4oKvAZ6c7HbQhPGV2eCo7PoDQfUIw/H5pJF3UaLOb9gPbw=","ARC-Authentication-Results":"i=1; smtp.subspace.kernel.org;\n dmarc=none (p=none dis=none) header.from=pengutronix.de;\n spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7","From":"Oleksij Rempel ","To":"Guenter Roeck ,\n\tRob Herring ,\n\tKrzysztof Kozlowski ,\n\tConor Dooley ,\n\tLee Jones ,\n\tPeter Rosin ,\n\tLinus Walleij ","Cc":"Oleksij Rempel ,\n\tkernel@pengutronix.de,\n\tlinux-kernel@vger.kernel.org,\n\tdevicetree@vger.kernel.org,\n\tlinux-hwmon@vger.kernel.org,\n\tlinux-gpio@vger.kernel.org,\n\tDavid Jander ","Subject":"[PATCH v10 0/6] mfd: Add support for NXP MC33978/MC34978 MSDI","Date":"Wed, 1 Apr 2026 18:25:04 +0200","Message-ID":"<20260401162510.1706073-1-o.rempel@pengutronix.de>","X-Mailer":"git-send-email 2.47.3","Precedence":"bulk","X-Mailing-List":"linux-gpio@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-SA-Exim-Connect-IP":"2a0a:edc0:0:c01:1d::a2","X-SA-Exim-Mail-From":"ore@pengutronix.de","X-SA-Exim-Scanned":"No (on metis.whiteo.stw.pengutronix.de);\n SAEximRunCond expanded to false","X-PTX-Original-Recipient":"linux-gpio@vger.kernel.org"},"content":"changes v7:\n- drop gpiolib irq fix and make pinctrl more robust against NULL point\n dereference.\n\nThis series adds support for the NXP MC33978/MC34978 Multiple Switch Detection\nInterface (MSDI) via the MFD framework.\n\nArchitecture overview:\n* mfd: Core driver handling 2-frame pipelined SPI, regulator sequencing, and\n linear irq_domain. Harvests status bits from SPI MISO MSB.\n* pinctrl: Exposes 22 physical switch inputs as standard GPIOs. Proxies IRQs to\n the MFD domain.\n* hwmon: Exposes thermal limits, VBATP/VDDQ voltage boundaries, and dynamic\n fault alarms.\n* mux: Controls the 24-to-1 AMUX routing analog signals (switch voltages,\n temperature, VBATP) to an external ADC.\n\nInitial pinctrl implementation by David Jander, reworked into this MFD\narchitecture.\n\nBest regards,\nOleksij\n\nDavid Jander (1):\n pinctrl: add NXP MC33978/MC34978 pinctrl driver\n\nOleksij Rempel (5):\n dt-bindings: pinctrl: add NXP MC33978/MC34978 MSDI\n mfd: add NXP MC33978/MC34978 core driver\n pinctrl: core: Make pin group callbacks optional for pin-only drivers\n hwmon: add NXP MC33978/MC34978 driver\n mux: add NXP MC33978/MC34978 AMUX driver\n\n .../bindings/pinctrl/nxp,mc33978.yaml | 158 +++\n drivers/hwmon/Kconfig | 10 +\n drivers/hwmon/Makefile | 1 +\n drivers/hwmon/mc33978-hwmon.c | 549 +++++++++\n drivers/mfd/Kconfig | 15 +\n drivers/mfd/Makefile | 2 +\n drivers/mfd/mc33978.c | 1079 +++++++++++++++++\n drivers/mux/Kconfig | 14 +\n drivers/mux/Makefile | 2 +\n drivers/mux/mc33978-mux.c | 141 +++\n drivers/pinctrl/Kconfig | 16 +\n drivers/pinctrl/Makefile | 1 +\n drivers/pinctrl/core.c | 41 +-\n drivers/pinctrl/pinconf.c | 9 +-\n drivers/pinctrl/pinctrl-mc33978.c | 1008 +++++++++++++++\n include/linux/mfd/mc33978.h | 95 ++\n 16 files changed, 3134 insertions(+), 7 deletions(-)\n create mode 100644 Documentation/devicetree/bindings/pinctrl/nxp,mc33978.yaml\n create mode 100644 drivers/hwmon/mc33978-hwmon.c\n create mode 100644 drivers/mfd/mc33978.c\n create mode 100644 drivers/mux/mc33978-mux.c\n create mode 100644 drivers/pinctrl/pinctrl-mc33978.c\n create mode 100644 include/linux/mfd/mc33978.h\n\n--\n2.47.3"}