Re: [PATCH v1 3/8] dt-bindings: pinctrl: add NXP MC33978/MC34978 pinctrl

[Oleksij Rempel]

On Fri, Feb 27, 2026 at 12:00:43AM +0100, Linus Walleij wrote:
> Hi Oleksij,
> 
> thanks for your patch for this very interesting hardware!
> 
> On Wed, Feb 25, 2026 at 6:16 PM Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx> wrote:
> 
> > Add device tree binding documentation for the pin control and GPIO block
> > of the NXP MC33978/MC34978 Multiple Switch Detection Interface (MSDI).
> >
> > This block manages 22 switch detection inputs (14 Switch-to-Ground,
> > 8 Programmable) and acts as a GPIO controller.
> >
> > Additionally, it supports pin configuration for hardware-specific features
> > required for long-term contact maintenance in harsh environments, such as
> > adjusting the continuous/pulsed wetting current to penetrate oxide layers
> > on mechanical switches.
> >
> > Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
> 
> Are the hardware-specific pin configurations for oxide layer
> penetration (!) and stuff excluded from these bindings? (It looks
> like.)

Yes, they are excluded for now. The target board is general-purpose, so
the attached switches or LEDs will vary. I'd prefer to gather more
concrete use cases before designing a generic interface for the
wetting currents.

Best Regards,
Oleksij
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