[PATCH 1/4] arm: mvebu: limit OpenBlocks AX3-4 to 1 GB of RAM

Andrew Lunn
2013-01-04T17:26:35Z

On 04/01/13 17:04, Thomas Petazzoni wrote:
> Signed-off-by: Thomas Petazzoni<thomas.petazzoni@free-electrons.com>
> ---
> 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