Re: [RFC PATCH v2] pinctrl: add helper to expose pinctrl state in debugfs

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Sat, Jan 9, 2021 at 3:55 AM Drew Fustini <drew@xxxxxxxxxxxxxxx> wrote:

> I discussed my use case and this patch on #armlinux earlier this week
> and Alexandre Belloni suggested looking at the pinmux-pins debugfs file.

This sounds reasonable.

> This made me think that a possible solution could be to define a store
> function for pinmux-pins to handle something like "<pin#> <function#>".
> I believe the ability to activate a pin function (or pin group) from
> userspace would satisfy our beagleboard.org use-case.
>
> Does that seem like a reasonable approach?

This sounds like a good approach.

Yours,
Linus Walleij