netdev - Re: [PATCH 2/4] net: smsc911x: add a reset GPIO DT binding

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Message-ID: <20130723221808.GA7727@pengutronix.de>
Date:	Wed, 24 Jul 2013 00:18:08 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Guennadi Liakhovetski <g.liakhovetski@....de>
Cc:	linux-sh@...r.kernel.org, Magnus Damm <magnus.damm@...il.com>,
	Simon Horman <horms@...ge.net.au>,
	Steve Glendinning <steve.glendinning@...well.net>,
	netdev@...r.kernel.org,
	Guennadi Liakhovetski <g.liakhovetski+renesas@...il.com>,
	devicetree@...r.kernel.org
Subject: Re: [PATCH 2/4] net: smsc911x: add a reset GPIO DT binding

On Tue, Jul 23, 2013 at 06:12:02PM +0200, Guennadi Liakhovetski wrote:
> Add a new DT property to specify a reset GPIO.
> 
> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@...il.com>
> Cc: devicetree@...r.kernel.org
> ---
>  Documentation/devicetree/bindings/net/smsc911x.txt |    1 +
>  drivers/net/ethernet/smsc/smsc911x.c               |   11 +++++++++++
>  2 files changed, 12 insertions(+), 0 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/smsc911x.txt b/Documentation/devicetree/bindings/net/smsc911x.txt
> index adb5b57..2bf32be 100644
> --- a/Documentation/devicetree/bindings/net/smsc911x.txt
> +++ b/Documentation/devicetree/bindings/net/smsc911x.txt
> @@ -23,6 +23,7 @@ Optional properties:
>    external PHY
>  - smsc,save-mac-address : Indicates that mac address needs to be saved
>    before resetting the controller
> +- smsc,reset-gpios : a GPIO binding to take the controller out of reset
>  - local-mac-address : 6 bytes, mac address

BTW there's also:

[PATCH v10] reset: Add driver for gpio-controlled reset pins

http://www.mail-archive.com/devicetree-discuss@lists.ozlabs.org/msg36900.html

which may be a generic way to handle device resets. Not mainline yet,
though.

Sascha

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