Re: [PATCH V2 3/3] gpio: modepin: Add driver support for modepin GPIO controller

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

Hi Piyush,

thanks for your patch!

Can you explain one thing to me: since this is now a GPIO driver
that means "General Purpos Input/Output", then these bits are
accessed like this:

On Thu, Aug 5, 2021 at 7:43 PM Piyush Mehta <piyush.mehta@xxxxxxxxxx> wrote:

> +       ret = zynqmp_pm_bootmode_read(&bootpin_val);

This does not look very general purpose. These seem to be all about
boot mode, right?

So can you explain why this should be a GPIO driver at all?

I understand it is sometimes convenient to describe stuff as GPIO even
if it is not (for example to get a convenient userspace interface) but
as maintainers
we really need to make sure that the subsystem is not being abused
for things not GPIO.

Yours,
Linus Walleij