linux-kernel - Re: [PATCH] ARM: dts: OMAP3-N900: Fix offset for smc91x ethernet

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Date:	Fri, 20 Feb 2015 10:52:47 +0100
From:	Pali Rohár <pali.rohar@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Benoît Cousson <bcousson@...libre.com>,
	Tony Lindgren <tony@...mide.com>,
	Rob Herring <robh+dt@...nel.org>, linux-omap@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: OMAP3-N900: Fix offset for smc91x ethernet

On Friday 20 February 2015 10:24:35 Arnd Bergmann wrote:
> On Thursday 19 February 2015 17:49:50 Pali Rohár wrote:
> > Offset for smc91x must be zero otherwise smc91x linux kernel
> > driver does not detect smc91x ethernet hardware in qemu
> > N900 machine.
> > 
> > Signed-off-by: Pali Rohár <pali.rohar@...il.com>
> 
> Is that the same offset on real hardware, or could this be a
> mistake in the qemu model?
> 
> 	Arnd

In original Nokia 2.6.28 kernel is offset also set to 0, see:

https://gitorious.org/linux-n900/linux-n900/source/629fc5ab00cafb31272c478efa2c2b35fabd4c70:arch/arm/mach-omap2/board-rx51-peripherals.c#L42

https://gitorious.org/linux-n900/linux-n900/source/629fc5ab00cafb31272c478efa2c2b35fabd4c70:arch/arm/mach-omap2/board-rx51-peripherals.c#L274

Tony already tested offset 0 on real HW and wrote that it is
working too, just show some warning. But qemu with offset 0x300
does not work.

-- 
Pali Rohár
pali.rohar@...il.com

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