linux-kernel - Re: [PATCH v2] Documentation: gpio: guidelines for bindings

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Date:	Wed, 29 Oct 2014 10:56:52 +0200
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	Alexandre Courbot <acourbot@...dia.com>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	devicetree@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org, gnurou@...il.com,
	Arnd Bergmann <arnd@...db.de>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: Re: [PATCH v2] Documentation: gpio: guidelines for bindings

On Wed, Oct 29, 2014 at 05:13:14PM +0900, Alexandre Courbot wrote:
> Now that ACPI supports named GPIO properties, either through ACPI 5.1 or
> the per-driver ACPI GPIO mappings, we can be more narrow about the way
> GPIOs should be specified in Device Tree bindings.
> 
> This patch updates the GPIO DT bindings documentation to highlight the
> following rules for new GPIO bindings:
> 
> - All new bindings must have a meaningful name (e.g. the "gpios"
>   property must not be used)
> - The only suffix allowed is "-gpios", no matter the number of
>   descriptors in the property
> - GPIOs can only be grouped under the same property when they serve the
>   same purpose, a case that should remain exceptional (e.g. bit-banged
>   data lines).
> 
> Signed-off-by: Alexandre Courbot <acourbot@...dia.com>
> CC: Linus Walleij <linus.walleij@...aro.org>
> CC: Arnd Bergmann <arnd@...db.de>
> CC: Rafael J. Wysocki <rjw@...ysocki.net>
> CC: Mika Westerberg <mika.westerberg@...ux.intel.com>

Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
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