linux-kernel - Re: [linux-sunxi] [PATCH v4 09/10] ARM: dtsi: axp81x: add GPIO DT node

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Message-ID: <20171205093945.5sudt23fag7q3ric@flea.lan>
Date:   Tue, 5 Dec 2017 10:39:45 +0100
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Quentin Schulz <quentin.schulz@...e-electrons.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Lee Jones <lee.jones@...aro.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [linux-sunxi] [PATCH v4 09/10] ARM: dtsi: axp81x: add GPIO DT
 node

Hi,

On Tue, Dec 05, 2017 at 05:24:47PM +0800, Chen-Yu Tsai wrote:
> On Fri, Dec 1, 2017 at 9:44 PM, Quentin Schulz
> <quentin.schulz@...e-electrons.com> wrote:
> > This adds DT node for the GPIO/pinctrl part present in AXP813/AXP818.
> >
> > Signed-off-by: Quentin Schulz <quentin.schulz@...e-electrons.com>
> > ---
> >  arch/arm/boot/dts/axp81x.dtsi | 6 ++++++
> >  1 file changed, 6 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/axp81x.dtsi b/arch/arm/boot/dts/axp81x.dtsi
> > index 73b761f..0ef959d 100644
> > --- a/arch/arm/boot/dts/axp81x.dtsi
> > +++ b/arch/arm/boot/dts/axp81x.dtsi
> > @@ -48,6 +48,12 @@
> >         interrupt-controller;
> >         #interrupt-cells = <1>;
> >
> > +       axp_gpio: axp-gpio {
> > +               compatible = "x-powers,axp813-gpio";
> > +               gpio-controller;
> > +               #gpio-cells = <2>;
> 
> What about interrupt-controller for directly referenced interrupts from
> the GPIO pins?

There's a bit more to it to enable interrupts. You would probably need
to set up a chained interrupt controller in the GPIO driver, and in
the DTS with a interrupt-parent and interrupts properties pointing to
the AXP device itself.

> Otherwise,
> 
> Acked-by: Chen-Yu Tsai <wens@...e.org>

Applied 9 and 10, thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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