From: Laxman Dewangan <ldewangan@nvidia.com>
To: Mark Rutland <mark.rutland@arm.com>
Cc: "akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"grant.likely@linaro.org" <grant.likely@linaro.org>,
"rob.herring@calxeda.com" <rob.herring@calxeda.com>,
"rob@landley.net" <rob@landley.net>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"rtc-linux@googlegroups.com" <rtc-linux@googlegroups.com>,
"gg@slimlogic.co.uk" <gg@slimlogic.co.uk>,
"kishon@ti.com" <kishon@ti.com>,
Stephen Warren <swarren@nvidia.com>,
Pawel Moll <Pawel.Moll@arm.com>,
"ian.campbell@citrix.com" <ian.campbell@citrix.com>,
"broonie@kernel.org" <broonie@kernel.org>
Subject: Re: [PATCH V4] drivers/rtc/rtc-palmas.c: support for backup battery charging
Date: Thu, 8 Aug 2013 22:47:50 +0530 [thread overview]
Message-ID: <5203D2BE.1010807@nvidia.com> (raw)
In-Reply-To: <20130808093340.GG14648@e106331-lin.cambridge.arm.com>
On Thursday 08 August 2013 03:03 PM, Mark Rutland wrote:
> On Wed, Aug 07, 2013 at 07:46:11PM +0100, Laxman Dewangan wrote:
>>> What happens if we charge at the wrong current?
>> Not much sure but I think it can create battery damage.
> If we charge a battery supporting >100mA at a current <100mA, will that
> cause damage? Or only if we charge above it's supported current?
Over-current charging can only damage. Lower charging current will not
damage, just will take more time to charge.
>
> If the latter's true, it might make sense to invert the condition and
> describe that the battery may be charged at a higher current, with the
> default being <100mA. That way a missing property in the dt will only
> result in sub-optimal charging rather than battery damage.
>
Ok, fine with this. In this case property will be
"ti,backup-battery-charge-high-current".
prev parent reply other threads:[~2013-08-08 17:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-07 10:29 [PATCH V4] drivers/rtc/rtc-palmas.c: support for backup battery charging Laxman Dewangan
2013-08-07 10:29 ` Laxman Dewangan
2013-08-07 16:38 ` Mark Rutland
2013-08-07 18:46 ` Laxman Dewangan
2013-08-08 9:33 ` Mark Rutland
2013-08-08 17:17 ` Laxman Dewangan [this message]
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