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

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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

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[PATCH v2 0/2] ARM: at91: properly handle LPDDR poweroff Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-10-19 16:20 +0200
  Re: [PATCH v2 0/2] ARM: at91: properly handle LPDDR poweroff Geert Uytterhoeven <geert@linux-m68k.org> - 2016-10-19 16:30 +0200
    Re: [PATCH v2 0/2] ARM: at91: properly handle LPDDR poweroff Nicolas Ferre <nicolas.ferre@atmel.com> - 2016-10-19 16:40 +0200
  [PATCH v2 1/2] ARM: at91: define LPDDR types Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-10-19 18:40 +0200

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