From: nicolas.ferre@atmel.com (Nicolas Ferre)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/2] ARM: at91: properly handle LPDDR poweroff
Date: Wed, 19 Oct 2016 16:30:55 +0200 [thread overview]
Message-ID: <585ae249-07ef-5299-17aa-2bcf79a09f24@atmel.com> (raw)
In-Reply-To: <CAMuHMdUnoHPOQeO=oSRkNWbfLGDzZbBZvPFr3dS7TOKPQFcUxQ@mail.gmail.com>
Le 19/10/2016 ? 16:07, Geert Uytterhoeven a ?crit :
> 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
prev parent reply other threads:[~2016-10-19 14:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-19 11:44 [PATCH v2 0/2] ARM: at91: properly handle LPDDR poweroff Alexandre Belloni
2016-10-19 11:44 ` [PATCH v2 1/2] ARM: at91: define LPDDR types Alexandre Belloni
2016-10-19 11:44 ` [PATCH v2 2/2] power/reset: at91-poweroff: timely shutdown LPDDR memories Alexandre Belloni
2016-10-19 14:07 ` [PATCH v2 0/2] ARM: at91: properly handle LPDDR poweroff Geert Uytterhoeven
2016-10-19 14:30 ` Nicolas Ferre [this message]
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