[PATCH] ARM: mvebu: fix RAM size for Armada XP board DB-MV784MP-GP

[Jason Cooper]

On Wed, Mar 13, 2013 at 03:42:43PM +0100, Gregory CLEMENT wrote:
> On 03/13/2013 03:39 PM, Jason Cooper wrote:
> > On Wed, Mar 13, 2013 at 06:30:30PM +0400, Sergei Shtylyov wrote:
> >> Hello.
> >>
> >> On 12-03-2013 19:12, Jason Cooper wrote:
> >>
> >>> The board is supplied with a 4GB RAM module.  This value can be
> >>> overridden by the bootloader based on probed memory size.  We set it to
> >>> a reasonable value here.
> >>
> >>> Signed-off-by: Jason Cooper <jason at lakedaemon.net>
> >>> ---
> >>> As promised, catching this fix in the -rc cycle.
> >>
> >>> For those not familiar, earlier versions of the patch adding this board listed
> >>> 3GB because that is all that was visible.  I mistaken applied v3 of the patch
> >>> instead of v4 which properly listed 4GB.  This patch cleans up my error.
> >>
> >>>  arch/arm/boot/dts/armada-xp-gp.dts | 9 ++++-----
> >>>  1 file changed, 4 insertions(+), 5 deletions(-)
> >>
> >>> diff --git a/arch/arm/boot/dts/armada-xp-gp.dts b/arch/arm/boot/dts/armada-xp-gp.dts
> >>> index 1c8afe2..4a2776a 100644
> >>> --- a/arch/arm/boot/dts/armada-xp-gp.dts
> >>> +++ b/arch/arm/boot/dts/armada-xp-gp.dts
> >>> @@ -28,12 +28,11 @@
> >>>  		device_type = "memory";
> >>>
> >>>  		/*
> >>> -		 * 4 GB of plug-in RAM modules by default but only 3GB
> >>> -		 * are visible, the amount of memory available can be
> >>> -		 * changed by the bootloader according the size of the
> >>> -		 * module actually plugged
> >>> +		 * 4 GB of plug-in RAM modules by default. The amount of memory
> >>> +		 * available can be changed by the bootloader according the
> >>
> >>    "According to the size".
> > 
> > ok.
> > 
> >>> +		 * size of the module actually plugged
> >>>  		 */
> >>> -		reg = <0x00000000 0xC0000000>;
> >>> +		reg = <0x00000000 0xD0000000>;
> >>
> >>    But this is not 4G?
> > 
> > Interesting, this was the value given in v4 of the original patch adding
> > this board.  I should have double-checked it. v2 on the way.
> > 
> 
> I was wrong in my initial version, all we can do in 32 bits is not 4GB but 4GB-1B:
> reg = <0x00000000 0xFFFFFFFF>

hmmm, with the impending conquering of the server market by ARM, you'd
think we'd at least be able to parse a 64 bit integer...

thx,

Jason.