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

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Date:   Mon, 23 Mar 2020 22:25:58 +0300
From:   Sergey Semin <Sergey.Semin@...kalelectronics.ru>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC:     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>,
        <linux-gpio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 5/6] gpio: dwapb: Add debounce reference clock support

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.

> Otherwise looks good.
> 
> Also, did I miss the documentation update (bindings)?
> 

No, it's there: https://www.spinics.net/lists/devicetree/msg342655.html
You just haven't been in Cc there.

-Sergey

> -- 
> With Best Regards,
> Andy Shevchenko
> 
>