From: Baruch Siach <baruch@tkos.co.il>
To: Gerber Patrick <Patrick.Gerber@heig-vd.ch>
Cc: "linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: RTC backup on omap3 (overo)
Date: Tue, 5 Jul 2011 18:36:24 +0300 [thread overview]
Message-ID: <20110705153624.GA2331@tarshish> (raw)
In-Reply-To: <AD1D79D65ED429499381113CFECBBE48128DA6CF@EINTMBX02.einet.ad.eivd.ch>
Hi Patrick,
On Tue, Jul 05, 2011 at 02:35:12PM +0000, Gerber Patrick wrote:
> I am using an over Fire with an omap3530. I have added a small Lithium
> backup battery to the TWL4030 for RTC backup as recommanded by Gumstix.
> I have tried to set the time with date command and shutdown the overo and
> remove power. After restart the date is not the one that I have set but a
> default one (always the same).
>
> Does anybody have already experienced this ? Do you have any idea ?
Do 'hwclock -w' to set the RTC clock from the system clock. This should do the
trick, assuming that you have the RTC driver compiled, or loaded as a module.
baruch
--
~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
WARNING: multiple messages have this Message-ID (diff)
From: baruch@tkos.co.il (Baruch Siach)
To: linux-arm-kernel@lists.infradead.org
Subject: RTC backup on omap3 (overo)
Date: Tue, 5 Jul 2011 18:36:24 +0300 [thread overview]
Message-ID: <20110705153624.GA2331@tarshish> (raw)
In-Reply-To: <AD1D79D65ED429499381113CFECBBE48128DA6CF@EINTMBX02.einet.ad.eivd.ch>
Hi Patrick,
On Tue, Jul 05, 2011 at 02:35:12PM +0000, Gerber Patrick wrote:
> I am using an over Fire with an omap3530. I have added a small Lithium
> backup battery to the TWL4030 for RTC backup as recommanded by Gumstix.
> I have tried to set the time with date command and shutdown the overo and
> remove power. After restart the date is not the one that I have set but a
> default one (always the same).
>
> Does anybody have already experienced this ? Do you have any idea ?
Do 'hwclock -w' to set the RTC clock from the system clock. This should do the
trick, assuming that you have the RTC driver compiled, or loaded as a module.
baruch
--
~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
next prev parent reply other threads:[~2011-07-05 15:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-05 14:35 RTC backup on omap3 (overo) Gerber Patrick
2011-07-05 14:35 ` Gerber Patrick
2011-07-05 15:36 ` Baruch Siach [this message]
2011-07-05 15:36 ` Baruch Siach
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