linux-kernel - Re: Re: [PATCH v2 15/16] wl1251: Add sysfs file address for setting permanent mac address

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Date:	Wed, 11 Dec 2013 22:15:35 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Ivajlo Dimitrov <ivo.g.dimitrov.75@...il.com>
CC:	Pali Rohár <pali.rohar@...il.com>,
	Dan Williams <dcbw@...hat.com>, Kalle Valo <kvalo@...rom.com>,
	Luciano Coelho <luca@...lho.fi>,
	"John W. Linville" <linville@...driver.com>,
	<linux-wireless@...r.kernel.org>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <freemangordon@....bg>,
	<aaro.koskinen@....fi>, <pavel@....cz>, <sre@...g0.de>,
	<joni.lapilainen@...il.com>,
	Johannes Berg <johannes@...solutions.net>,
	Felipe Contreras <felipe.contreras@...il.com>
Subject: Re: Re: [PATCH v2 15/16] wl1251: Add sysfs file address for setting
 permanent mac address

On Wed, 2013-12-11 at 23:35 +0200, Ivajlo Dimitrov wrote:
> On 11.12.2013 23:17, Ben Hutchings wrote:
> > I think that's an even worse idea.  This is not firmware and it already
> > exists in separate storage.
> >
> > I think that rx51_init_wl1251() in
> > arch/arm/mach-omap2/board-rx51-peripherals.c should either copy the MAC
> > address out of NVRAM, or if it's too early to do that, then schedule a
> > function to run later and only then set up wl1251 platform data.
> >
> > Ben.
> >
> 
> And how will that work with DT when board files will be in the history?

1. Boot loader reads the MAC address from NVRAM and puts it in the DT
node.
or
2. NVRAM reading is done by a tiny driver that is loaded based on the
platform name and updates the DT node in memory.  (But I don't know how
wl1251 should decide to defer probing if it's probed before that other
driver.)

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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