Re: [PATCH] arm: mvebu: support for the new Armada XP evaluation board(DB-MV784MP-GP)

[Andrew Lunn <andrew-g2DYL2Zd6BY@public.gmane.org>]

On Wed, Jan 30, 2013 at 01:10:35PM -0500, Jason Cooper wrote:
> 
> Gregory,
> 
> Adding devicetree-discuss.
> 
> Guys, how do you prefer to handle plug-in RAM modules?  describe the
> soldered-in amount, or?
> 
> On Wed, Jan 30, 2013 at 06:35:17PM +0100, Gregory CLEMENT wrote:
> > On 01/30/2013 06:33 PM, Jason Cooper wrote:
> > > On Wed, Jan 30, 2013 at 06:26:14PM +0100, Gregory CLEMENT wrote:
> > >> This is the new Armada XP evaluation board from Marvell. It comes with
> > >> a RS232 port over USB, a SATA link, an internal SSD, 4 Ethernet
> > >> Gigabit links.
> > >>
> > >> Support for USB (Host and device), SDIO, PCIe will be added as drivers
> > >> when they become available for Armada XP in mainline.
> > >>
> > >> Signed-off-by: Gregory CLEMENT <gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> > >> ---
> > >>  arch/arm/boot/dts/Makefile         |    1 +
> > >>  arch/arm/boot/dts/armada-xp-gp.dts |   94 ++++++++++++++++++++++++++++++++++++
> > >>  2 files changed, 95 insertions(+)
> > >>  create mode 100644 arch/arm/boot/dts/armada-xp-gp.dts
> > >>
> ...
> > >> +	memory {
> > >> +		device_type = "memory";
> > >> +		reg = <0x00000000 0xC0000000>; /* 3 GB */
> > > 
> > > Is this the soldered on the board amount, or the amount with an
> > > expandable slot filled?
> > 
> > It is not soldered, so you can change the amount of memory
> 
> Well, there's something we don't encounter too much in the embedded
> world.  ;-)  I'm inclined to think the entry here should be the soldered
> on amount, and the bootloader would (hypothetically) change the DT to
> the probed amount.  But I haven't seen a precedent set yet...

Hi Jason

We have the same issue with OpenBox AX3. All the devices we have in
our hands have 1GB soldered down, plus 2GB on expansion. The DT
currently has the full 3GB.

However, there has been discussion of reducing this down to 1GB since
both Thomas and Gregory have unstable systems with the full 3GB, but
mine box is stable with the full 3GB. So i don't know how strong a
precedent that sets....

	  Andrew