linux-kernel - Re: [PATCH v2 5/6] gpio: dwapb: Add debounce reference clock support

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Message-ID: <CAHp75VcxJJ+GaLk7Rn5WveopZc76DkJA-dnB84QTpGfWdAbULA@mail.gmail.com>
Date:   Mon, 23 Mar 2020 23:37:46 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Sergey Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Hoan Tran <hoan@...amperecomputing.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        "Enrico Weigelt, metux IT consult" <info@...ux.net>,
        Allison Randal <allison@...utok.net>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 5/6] gpio: dwapb: Add debounce reference clock support

On Mon, Mar 23, 2020 at 9:28 PM Sergey Semin
<Sergey.Semin@...kalelectronics.ru> wrote:
> On Mon, Mar 23, 2020 at 08:38:37PM +0200, Andy Shevchenko wrote:
> > On Mon, Mar 23, 2020 at 09:06:31PM +0300, Sergey.Semin@...kalelectronics.ru wrote:
> > > From: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> > >
> > > Aside from the APB reference clock DW GPIO controller can have a
> > > dedicated clock connected to setup a debounce time interval for
> > > GPIO-based IRQs. Since this functionality is optional the corresponding
> > > clock source is also optional. Due to this lets handle the debounce
> > > clock in the same way as it has been developed for the APB reference
> > > clock, but using the bulk request/enable-disable methods.
> >
> > > +   if (err) {
> > > +           dev_err(gpio->dev, "Cannot reenable APB/Debounce clocks\n");
> > > +           return err;
> > > +   }
> >
> > Yeah, this should be a separate change.
> >
>
> Linus didn't think it was necessary in v1.

Ah, okay!

> > Otherwise looks good.



-- 
With Best Regards,
Andy Shevchenko