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From: jason@lakedaemon.net (Jason Cooper)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] ARM: mvebu: the Armada XP Matrix board has 4 GB
Date: Tue, 4 Mar 2014 14:05:06 -0500	[thread overview]
Message-ID: <20140304190506.GR1872@titan.lakedaemon.net> (raw)
In-Reply-To: <20140304200215.71cf4c13@skate>

On Tue, Mar 04, 2014 at 08:02:15PM +0100, Thomas Petazzoni wrote:
> Dear Jason Cooper,
> 
> On Tue, 4 Mar 2014 13:55:12 -0500, Jason Cooper wrote:
> > On Tue, Mar 04, 2014 at 05:37:02PM +0100, Thomas Petazzoni wrote:
> > > Since the Armada XP Matrix board has 4 GB of RAM and not 2 GB, we
> > > update the Device Tree to take into account the correct amount of
> > > memory. As noted in the new comment, the last 256 MB of RAM are in
> > > fact not usable, due to the overlap with the MBus Window address
> > > range.
> > 
> > usually the bootloader (DT) or atags_to_fdt overwrites this.  Is there a
> > scenario when that doesn't happen?
> 
> ATAGs booting with CONFIG_ARM_ATAG_DTB_COMPAT disabled. Though mainly
> the intent here is that if the amount of memory is mentioned in the DT,
> it's nicer when it's actually correct :-)

Ok, just wanted to make sure we weren't trying to work around broken
bootloaders (DT aware, wrong idea of size) or something else silly like
that.

thx,

Jason.

  reply	other threads:[~2014-03-04 19:05 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-04 16:36 [PATCH 0/4] ARM: mvebu: Device Tree updates for Armada XP boards Thomas Petazzoni
2014-03-04 16:36 ` [PATCH 1/4] ARM: mvebu: change the default PCIe apertures for Armada 370/XP Thomas Petazzoni
2014-03-04 16:37 ` [PATCH 2/4] ARM: mvebu: switch the Armada XP DB to use internal registers at 0xf1000000 Thomas Petazzoni
2014-03-04 16:37 ` [PATCH 3/4] ARM: mvebu: switch the Armada XP GP " Thomas Petazzoni
2014-03-04 16:37 ` [PATCH 4/4] ARM: mvebu: the Armada XP Matrix board has 4 GB Thomas Petazzoni
2014-03-04 18:55   ` Jason Cooper
2014-03-04 19:02     ` Thomas Petazzoni
2014-03-04 19:05       ` Jason Cooper [this message]
2014-03-06 20:05 ` [PATCH 0/4] ARM: mvebu: Device Tree updates for Armada XP boards Jason Cooper
2014-03-06 21:20   ` Thomas Petazzoni
2014-03-07  0:10   ` Ezequiel Garcia
2014-03-07  0:16     ` Jason Cooper

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