From: Mark Rutland <mark.rutland@arm.com> To: Feng Kan <fkan@apm.com> Cc: "patches@apm.com" <patches@apm.com>, "linus.walleij@linaro.org" <linus.walleij@linaro.org>, "gnurou@gmail.com" <gnurou@gmail.com>, "linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org> Subject: Re: [PATCH V5 2/3] Documentation: gpio: Add APM X-Gene SoC GPIO controller DTS binding Date: Mon, 30 Jun 2014 13:53:39 +0100 [thread overview] Message-ID: <20140630125339.GA21390@leverpostej> (raw) In-Reply-To: <1403823587-23404-3-git-send-email-fkan@apm.com> On Thu, Jun 26, 2014 at 11:59:46PM +0100, Feng Kan wrote: > Documentation for APM X-Gene SoC GPIO controller DTS binding. > > Signed-off-by: Feng Kan <fkan@apm.com> > Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> > --- > .../devicetree/bindings/gpio/gpio-xgene.txt | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > create mode 100644 Documentation/devicetree/bindings/gpio/gpio-xgene.txt > > diff --git a/Documentation/devicetree/bindings/gpio/gpio-xgene.txt b/Documentation/devicetree/bindings/gpio/gpio-xgene.txt > new file mode 100644 > index 0000000..bd5fd85 > --- /dev/null > +++ b/Documentation/devicetree/bindings/gpio/gpio-xgene.txt > @@ -0,0 +1,20 @@ > +APM X-Gene SoC GPIO controller bindings > + > +This is a gpio controller that is part of the flash controller. > +This gpio controller controls a total of 48 gpios. > + > +Required properties: > +- compatible: "apm,xgene-gpio" for X-Gene GPIO controller > +- reg: Physical base address and size of the controller's registers There is just the one bank? > +- #gpio-cells: Should be two. > + - first cell is the pin number > + - second cell is used to specify optional parameters (unused) Why is there an unused cell? Why not just make this a single cell if the binding defines no valid parameters? > +- gpio-controller: Marks the device node as a GPIO controller. No interrupts? Thanks, Mark. > + > +Example: > + gpio0: gpio0@1701c000 { > + compatible = "apm,xgene-gpio"; > + reg = <0x0 0x1701c000 0x0 0x40>; > + gpio-controller; > + #gpio-cells = <2>; > + }; > -- > 1.9.1 > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
WARNING: multiple messages have this Message-ID (diff)
From: mark.rutland@arm.com (Mark Rutland) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V5 2/3] Documentation: gpio: Add APM X-Gene SoC GPIO controller DTS binding Date: Mon, 30 Jun 2014 13:53:39 +0100 [thread overview] Message-ID: <20140630125339.GA21390@leverpostej> (raw) In-Reply-To: <1403823587-23404-3-git-send-email-fkan@apm.com> On Thu, Jun 26, 2014 at 11:59:46PM +0100, Feng Kan wrote: > Documentation for APM X-Gene SoC GPIO controller DTS binding. > > Signed-off-by: Feng Kan <fkan@apm.com> > Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> > --- > .../devicetree/bindings/gpio/gpio-xgene.txt | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > create mode 100644 Documentation/devicetree/bindings/gpio/gpio-xgene.txt > > diff --git a/Documentation/devicetree/bindings/gpio/gpio-xgene.txt b/Documentation/devicetree/bindings/gpio/gpio-xgene.txt > new file mode 100644 > index 0000000..bd5fd85 > --- /dev/null > +++ b/Documentation/devicetree/bindings/gpio/gpio-xgene.txt > @@ -0,0 +1,20 @@ > +APM X-Gene SoC GPIO controller bindings > + > +This is a gpio controller that is part of the flash controller. > +This gpio controller controls a total of 48 gpios. > + > +Required properties: > +- compatible: "apm,xgene-gpio" for X-Gene GPIO controller > +- reg: Physical base address and size of the controller's registers There is just the one bank? > +- #gpio-cells: Should be two. > + - first cell is the pin number > + - second cell is used to specify optional parameters (unused) Why is there an unused cell? Why not just make this a single cell if the binding defines no valid parameters? > +- gpio-controller: Marks the device node as a GPIO controller. No interrupts? Thanks, Mark. > + > +Example: > + gpio0: gpio0 at 1701c000 { > + compatible = "apm,xgene-gpio"; > + reg = <0x0 0x1701c000 0x0 0x40>; > + gpio-controller; > + #gpio-cells = <2>; > + }; > -- > 1.9.1 > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo at vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
next prev parent reply other threads:[~2014-06-30 12:54 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-06-26 22:59 [PATCH V5 0/3] gpio: Add APM X-Gene SoC platform GPIO driver Feng Kan 2014-06-26 22:59 ` Feng Kan 2014-06-26 22:59 ` [PATCH V5 1/3] gpio: Add APM X-Gene SoC GPIO controller support Feng Kan 2014-06-26 22:59 ` Feng Kan 2014-07-04 21:20 ` Linus Walleij 2014-07-04 21:20 ` Linus Walleij 2014-07-04 21:22 ` Linus Walleij 2014-07-04 21:22 ` Linus Walleij 2014-06-26 22:59 ` [PATCH V5 2/3] Documentation: gpio: Add APM X-Gene SoC GPIO controller DTS binding Feng Kan 2014-06-26 22:59 ` Feng Kan 2014-06-30 12:53 ` Mark Rutland [this message] 2014-06-30 12:53 ` Mark Rutland 2014-07-04 21:28 ` Linus Walleij 2014-07-04 21:28 ` Linus Walleij 2014-07-07 18:52 ` Feng Kan 2014-07-07 18:52 ` Feng Kan 2014-07-07 21:26 ` Linus Walleij 2014-07-07 21:26 ` Linus Walleij 2014-07-07 21:54 ` Anton Vorontsov 2014-07-07 21:54 ` Anton Vorontsov 2014-07-08 22:54 ` Feng Kan 2014-07-08 22:54 ` Feng Kan 2014-06-26 22:59 ` [PATCH V5 3/3] arm64:dts: Add APM X-Gene SoC GPIO controller DTS entries Feng Kan 2014-06-26 22:59 ` Feng Kan 2014-06-28 3:14 ` [PATCH V5 0/3] gpio: Add APM X-Gene SoC platform GPIO driver Alexandre Courbot 2014-06-28 3:14 ` Alexandre Courbot
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