[PATCH v2 0/3] pinctrl: single: bit-per-mux DT flexibility, probe robustness, and consistent pinconf offsets
Tony Lindgren
tony at atomide.com
Mon Feb 9 06:42:50 PST 2026
* Linus Walleij <linusw at kernel.org> [260209 09:51]:
> On Mon, Feb 9, 2026 at 3:25 AM Billy Tsai <billy_tsai at aspeedtech.com> wrote:
>
> > To make sure I align with your expectations:
> > 1) Would you prefer the new driver to be fully standalone (using the
> > GENERIC_PIN* helpers + syscon/regmap-mmio), rather than trying to
> > refactor/export helpers from pinctrl-single?
>
> Yes. Conor improved these helpers so now it should be possible
> to use these to do a very simple and slim driver for what you
> want to do.
>
> > Action item: Introduce a new pinctrl-single-bit.c driver and DT
> > binding, which can also cover the existing bit-per-mux logic currently
> > in pinctrl-single.c.
>
> Sounds about right.
>
> > 2) For the syscon/regmap hookup, is it acceptable to add a syscon phandle
> > property in DT (e.g. "syscon = <&scu>;") for the new driver to obtain
> > the regmap, or do you prefer a different binding/property name?
>
> This works for me.
Great, sounds good to me too!
Thanks,
Tony
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