linux-kernel - Re: [PATCH 3/5] gpio: msc313: MStar MSC313 GPIO driver

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Date:   Fri, 6 Nov 2020 00:39:13 +0900
From:   Daniel Palmer <daniel@...f.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Willy Tarreau <w@....eu>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH 3/5] gpio: msc313: MStar MSC313 GPIO driver

Hi Linus,

Thanks for all of the comments.

On Thu, 5 Nov 2020 at 18:42, Linus Walleij <linus.walleij@...aro.org> wrote:
>
> On Thu, Nov 5, 2020 at 10:31 AM Willy Tarreau <w@....eu> wrote:
> > On Thu, Nov 05, 2020 at 10:21:27AM +0100, Linus Walleij wrote:
>
> > > If your SoC is only used by OpenWrt (like ixp4xx) then it is fine
> > > to just use bool because that distribution is always built with an
> > > image for a specific hardware, whereas distributions are generic.
> >
.. snip ..
>> It's unlikely that we'll see very
> > generic distros there given the limited storage you'd typically have
> > in an SPI NOR (16-32 MB) and the small RAM (64MB) which tends to
> > discourage anyone from booting a regular distro over other storage
> > anyway.
> >
> > Thus my guess is that most users will keep building their own kernels.
> >
> > But this just emphasizes your points :-)
>
> I think that is a good argument to keep this as bool.

Thanks. I did change it to a tristate for v3 but I'll change it back.

Just a heads up:
There is another GPIO driver for this chip (same functionality,
totally different register layout for no reason) that'll look pretty
similar to this that'll follow soon.
It might be similar enough that people confuse the two series as the same thing.

Thanks,

Daniel