linux-kernel - Re: [PATCH V2 4/5] gpio: DT: Rephrase "gpios" of hog node to support multiple gpios

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Message-ID: <56E6E753.1020505@wwwdotorg.org>
Date:	Mon, 14 Mar 2016 10:31:15 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	linus.walleij@...aro.org, robh+dt@...nel.org, pawel.moll@....com,
	mark.rutland@....com, mpa@...gutronix.de, treding@...dia.com,
	bparrot@...com, acourbot@...dia.com, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 4/5] gpio: DT: Rephrase "gpios" of hog node to support
 multiple gpios

On 03/11/2016 06:43 AM, Laxman Dewangan wrote:
> The property "gpios" of GPIO hog node support the multiple GPIO entries.
> Rephrase the details of this property for this new support.
>
> Add details of new property "label" for GPIO label name.

> diff --git a/Documentation/devicetree/bindings/gpio/gpio.txt b/Documentation/devicetree/bindings/gpio/gpio.txt

>   Optional properties:
>   - line-name:  The GPIO label name. If not present the node name is used.
> +- label:      The GPIO lable name. This can have multiple string for GPIO
> +	      label names to match with the GPIOs in "gpios" properties.
> +	      If line-name is prosent than name is taken from line-name. If
> +	      it is not then the name will be taken from label. If both are
> +	      not available then node name is used for GPIO label name.

Why are there two properties for the same thing? Why not just allow 
line-name to have multiple entries instead of introducing a new property?