linux-kernel - [PATCH 0/3] pinctrl: ocelot: Extend pinctrl-ocelot driver for lan9645x

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Message-ID: <20260119-pinctrl_ocelot_extend_support_for_lan9645x-v1-0-1228155ed0ee@microchip.com>
Date: Mon, 19 Jan 2026 16:06:08 +0100
From: Jens Emil Schulz Østergaard
	<jensemil.schulzostergaard@...rochip.com>
To: Linus Walleij <linusw@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>, Lars Povlsen
	<lars.povlsen@...rochip.com>, Bartosz Golaszewski <brgl@...nel.org>, "Steen
 Hegelund" <Steen.Hegelund@...rochip.com>, Daniel Machon
	<daniel.machon@...rochip.com>
CC: <linux-gpio@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Jens Emil Schulz Østergaard
	<jensemil.schulzostergaard@...rochip.com>
Subject: [PATCH 0/3] pinctrl: ocelot: Extend pinctrl-ocelot driver for
 lan9645x

LAN9645x is a switch chip family with several on-chip peripherals, such as
a GPIO controller. The LAN9645xF subfamily has 3 SKUs with the difference 
being number of supported ports. There are 5, 7 and 9 ported SKUs.

The LAN9645xF family come in a VQFN-DR package and supports 51 GPIOs, and
up to 7 alternate modes per pin.

Due to the way this GPIO controller modifies alternate modes on a pin, this 
means the usual pin stride is 2, but the alternate mode stride is 3. This 
is the first device supported by pinctrl-ocelot where these two numbers 
are not equal. As a consequence the register address calculation in the 
REG_ALT macro is generalized to handle this.

Signed-off-by: Jens Emil Schulz Østergaard <jensemil.schulzostergaard@...rochip.com>
---
Jens Emil Schulz Østergaard (3):
      dt-bindings: pinctrl: ocelot: Add LAN9645x SoC support
      pinctrl: ocelot: Update alt mode reg addr calculation
      pinctrl: ocelot: Extend support for lan9645xf family

 .../bindings/pinctrl/mscc,ocelot-pinctrl.yaml      |   6 +
 drivers/pinctrl/pinctrl-ocelot.c                   | 184 ++++++++++++++++++++-
 2 files changed, 189 insertions(+), 1 deletion(-)
---
base-commit: cbe8e6bef6a3b4b895b47ea56f5952f1936aacb6
change-id: 20260113-pinctrl_ocelot_extend_support_for_lan9645x-56a51bba592e

Best regards,
-- 
Jens Emil Schulz Østergaard <jensemil.schulzostergaard@...rochip.com>