linux-kernel - Re: [PATCH v3 1/2] dt-bindings: gpio: Add Spreadtrum GPIO controller documentation

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Message-ID: <CAMz4kuLCVPo1KgHQ8wOv=y+-c6UkV+ubp8uChXn8KQipvrNesA@mail.gmail.com>
Date:   Wed, 14 Feb 2018 10:51:50 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Mark Brown <broonie@...nel.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Subject: Re: [PATCH v3 1/2] dt-bindings: gpio: Add Spreadtrum GPIO controller documentation

Hi Linus,

On 13 February 2018 at 17:20, Linus Walleij <linus.walleij@...aro.org> wrote:
> On Mon, Feb 5, 2018 at 2:55 AM, Baolin Wang <baolin.wang@...aro.org> wrote:
>
>> This patch adds the device tree bindings for the Spreadtrum
>> GPIO controller. The gpios will be supported by the GPIO
>> generic library.
>>
>> Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
>
> I took this patch out again for now, as it turns out
> that not all of the variants are really GPIO controllers,
> but rather irqchips.
>
> If they can't read nor write any GPIO lines, they should
> not have the property gpio-controller at all. Then they are
> just irqchips.

I did not get you here. All GPIOs can be read or write for this GPIO controller.

-- 
Baolin.wang
Best Regards