From mboxrd@z Thu Jan 1 00:00:00 1970 From: andrew@lunn.ch (Andrew Lunn) Date: Fri, 04 Jan 2013 18:26:35 +0100 Subject: [PATCH 1/4] arm: mvebu: limit OpenBlocks AX3-4 to 1 GB of RAM In-Reply-To: <1357315498-4570-2-git-send-email-thomas.petazzoni@free-electrons.com> References: <1357315498-4570-1-git-send-email-thomas.petazzoni@free-electrons.com> <1357315498-4570-2-git-send-email-thomas.petazzoni@free-electrons.com> Message-ID: <50E710CB.8070007@lunn.ch> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 04/01/13 17:04, Thomas Petazzoni wrote: > Signed-off-by: Thomas Petazzoni > --- > This is a fix for 3.8, should be pushed for some 3.8-rc. > --- > arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts > index 72a9dd0..3e9ee1b 100644 > --- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts > +++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts > @@ -23,7 +23,13 @@ > > memory { > device_type = "memory"; > - reg =<0x00000000 0xC0000000>; /* 3 GB */ > + /* > + * The board has an additional 2 GB DRAM chip in an > + * expansion slot, but using it makes the system very > + * unstable: it even doesn't boot reliably. So we use > + * only the soldered 1 GB chip for now. > + */ > + reg =<0x00000000 0x40000000>; /* 1 GB */ > }; > > soc { Hi Thomas How many different boards have you tried? I've not had problems with the board i have. Using the plathome supplied kernel, i've rebuilt the kernel, which is a good memory test. Using mainline, i've booted a number of times when developing the thermal driver and not had problems. I would hate to disable 2GB of RAM just because your board has a fault. Andrew