linux-kernel - Re: [PATCH v3 4/8] gpio: dt-bindings: Add documentation for Aspeed GPIO controllers

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Date:   Fri, 2 Sep 2016 10:00:45 -0500
From:   Rob Herring <robh@...nel.org>
To:     Andrew Jeffery <andrew@...id.au>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Joel Stanley <joel@....id.au>,
        Alexandre Courbot <gnurou@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Jeremy Kerr <jk@...abs.org>, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 4/8] gpio: dt-bindings: Add documentation for Aspeed
 GPIO controllers

On Tue, Aug 30, 2016 at 05:24:23PM +0930, Andrew Jeffery wrote:
> Signed-off-by: Andrew Jeffery <andrew@...id.au>
> Acked-by: Joel Stanley <joel@....id.au>
> ---
>  .../devicetree/bindings/gpio/gpio-aspeed.txt       | 36 ++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/gpio/gpio-aspeed.txt

Acked-by: Rob Herring <robh@...nel.org>

> 
> diff --git a/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt b/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
> new file mode 100644
> index 000000000000..09f26cac18d1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
> @@ -0,0 +1,36 @@
> +Aspeed GPIO controller Device Tree Bindings
> +-------------------------------------------
> +
> +Required properties:
> +- #gpio-cells 		: Should be two
> +			  - First cell is the GPIO line number
> +			  - Second cell is used to specify optional
> +			    parameters (unused)
> +
> +- compatible		: Either "aspeed,ast2400-gpio" or "aspeed,ast2500-gpio"

I'd prefer this be listed first if you respin this.

> +
> +- reg			: Address and length of the register set for the device
> +- gpio-controller	: Marks the device node as a GPIO controller.
> +- interrupts		: Interrupt specifier (see interrupt bindings for
> +			  details)
> +- interrupt-controller	: Mark the GPIO controller as an interrupt-controller
> +
> +Optional properties:
> +
> +- interrupt-parent     : The parent interrupt controller, optional if inherited
> +
> +The gpio and interrupt properties are further described in their respective
> +bindings documentation:
> +
> +- Documentation/devicetree/bindings/gpio/gpio.txt
> +- Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
> +
> +  Example:
> +	gpio@...80000 {
> +		#gpio-cells = <2>;
> +		compatible = "aspeed,ast2400-gpio";
> +		gpio-controller;
> +		interrupts = <20>;
> +		reg = <0x1e780000 0x1000>;
> +		interrupt-controller;
> +	};
> -- 
> 2.9.3.1.g0db844e
>