netdev - Re: [PATCH 4/4] ARM: dts: Enable emac node on the rk3188-radxarock boards

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Date:	Wed, 03 Sep 2014 19:45:50 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	PERIER Romain <romain.perier@...il.com>,
	Naoki FUKAUMI <naobsd@...il.com>,
	devicetree <devicetree@...r.kernel.org>,
	Heiko Stübner <heiko@...ech.de>,
	netdev <netdev@...r.kernel.org>,
	linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH 4/4] ARM: dts: Enable emac node on the rk3188-radxarock boards

On Wednesday 03 September 2014 18:37:16 PERIER Romain wrote:
> It is an optional property used by arc-emac (the core driver), if it
> is not present the core driver generates one for you.
> Problem being that with this property two radxa rock boards connected
> on the same local network might have the same mac address.
> 
> In this case it would be probably better to remove this property. What
> do you think ?
> 

It would typically be filled in by the boot loader, and be all-zeroes
in the kernel-supplied dts file. I don't see a point in hardcoding
a particular MAC address in the dts file, since that won't work
unless it's the only device of that type in the network segment.

	Arnd
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