[PATCH v2 0/3] pinctrl: single: bit-per-mux DT flexibility, probe robustness, and consistent pinconf offsets

[Linus Walleij]

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.

Yours,
Linus Walleij