linux-kernel - Re: [PATCH 2/2] ARM: dts: berlin2q: add the Marvell BG2-Q DMP device tree

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Message-ID: <20140312204454.36a6be85@xhacker>
Date:	Wed, 12 Mar 2014 20:44:54 +0800
From:	Jisheng Zhang <jszhang@...vell.com>
To:	Andrew Lunn <andrew@...n.ch>
CC:	Antoine Ténart 
	<antoine.tenart@...e-electrons.com>,
	"sebastian.hesselbarth@...il.com" <sebastian.hesselbarth@...il.com>,
	"Jimmy Xu" <zmxu@...vell.com>,
	"alexandre.belloni@...e-electrons.com" 
	<alexandre.belloni@...e-electrons.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 2/2] ARM: dts: berlin2q: add the Marvell BG2-Q DMP
 device tree

Hi Andrew,

On Wed, 12 Mar 2014 05:37:59 -0700
Andrew Lunn <andrew@...n.ch> wrote:

> > > +/dts-v1/;
> > > +#include "berlin2q.dtsi"
> > > +
> > > +/ {
> > > +	model = "Marvell BG2-Q DMP";
> > > +	compatible = "marvell,berlin2q-dmp", "marvell,berlin2q",
> > > "marvell,berlin"; +
> > > +	memory {
> > > +		device_type = "memory";
> > > +		reg = <0x00000000 0x40000000>;
> > 
> > The memory size of BG2Q DMP is 2GB.
> 
> Jisheng
> 
> Does this imply that the RAM is inside the SoC package, and that
> there is no external memory interface which can be used to add more
> RAM?

Nope. The ram is on the board. After talking with Alex, I think it's 
reasonable to put the memory node in dts as the original patch does.

However, we need to set the correct memory size of BG2Q DMP board.

Thanks,
Jisheng

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