Re: [PATCH v2 1/1] gpiolib: of: add gpio-line node support

[Bartosz Golaszewski]

On Sat, 14 Feb 2026 22:32:37 +0100, James Hilliard
<james.hilliard1@xxxxxxxxx> said:
> Allow GPIO controller child nodes marked with "gpio-line" to
> configure direction/flags at probe time without hogging the line.
>
> Teach OF gpiochip scanning and OF dynamic reconfiguration handlers to
> process gpio-line nodes in addition to gpio-hog nodes.
>
> Also parse "gpio-line-name" and apply it to desc->name. For gpio-hog
> nodes, keep "line-name" semantics as the hog consumer label.
>

One important thing that's missing from this commit description is: what is
the use-case and why do you need this.

The DT binding patch should be sent together with this in a single series. It
should also be documented in the relevant .rst file.

I suppose it's another shot at defining what we previously called
"initial-line-state", "default-line-state", etc. What happens when someone
requests the line, reconfigures it and then releases it?

This should also not be OF-specific but rather a GPIOLIB-wide switch.

Bartosz