pinctrl: ocelot: Extend pinctrl-ocelot driver for lan9645x

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

Posted by Jens Emil Schulz Østergaard 2 weeks, 6 days ago

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@microchip.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@microchip.com>

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

Posted by Linus Walleij 1 week, 6 days ago

On Mon, Jan 19, 2026 at 4:07 PM Jens Emil Schulz Østergaard
<jensemil.schulzostergaard@microchip.com> wrote:

> 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@microchip.com>

Patch applied!

Yours,
Linus Walleij