Re: [PATCH v2 0/2] ARM: at91: properly handle LPDDR poweroff

Nicolas Ferre
2016-10-19T14:30:55Z

Le 19/10/2016 à 16:07, Geert Uytterhoeven a écrit :
> On Wed, Oct 19, 2016 at 1:44 PM, Alexandre Belloni
> <alexandre.belloni@free-electrons.com> wrote:
>> LPDDR memories can only handle up to 400 uncontrolled power offs in their
>> life. The proper power off sequence has to be applied before shutting down the
>> SoC.
>
> Interesting. How many boards have been killed during kernelci.org
> operation?

The reason given above is usually the one that prevent manufacturers
from using LPDDR on "evaluation" boards. So all Atmel boards use
SDRAM/DDR2/DDR3 not the LP variants.

Final products (and internal validation boards, obviously) though use
these type of RAM so we must be prepared to handle them.

Best regards,
--
Nicolas Ferre