From: bruce robertson <bruce.e.robertson@intel.com>
To: Anton Vorontsov <cbouatmailru@gmail.com>
Cc: <dirk.brandewie@gmail.com>, <linux-kernel@vger.kernel.org>,
<dg77.kim@samsung.com>, <kyungmin.park@samsung.com>,
<myungjoo.ham@samsung.com>, <Jason.Wortham@maxim-ic.com>
Subject: Re: [PATCH 4/5] max17042: Fix value scaling for VCELL and avgVCELL
Date: Tue, 13 Mar 2012 14:00:13 -0700 [thread overview]
Message-ID: <m3pqcg5i8y.fsf@intel.com> (raw)
In-Reply-To: <20120313181918.GA15964@oksana.dev.rtsoft.ru> (Anton Vorontsov's message of "Tue, 13 Mar 2012 22:19:18 +0400")
Anton Vorontsov <cbouatmailru@gmail.com> writes:
> On Tue, Jan 24, 2012 at 09:26:07AM -0800, dirk.brandewie@gmail.com wrote:
>> From: Bruce Robertson <bruce.e.robertson@intel.com>
>>
>> The bottom three bits of the register are don't care bits. The LSB
>> value is 625 uV. Adjust the returned values appropriately
>>
>> Signed-off-by: Bruce Robertson <bruce.e.robertson@intel.com>
>> Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
>> Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
>
> I guess this was fixed long ago by the following patch:
>
> commit cf7a8c03db792894f436db5f3ffc44d947b9b068
> Author: MyungJoo Ham <myungjoo.ham@samsung.com>
> Date: Wed Aug 17 10:18:34 2011 +0900
>
> max17042_battery: Bugfix of incorrect voltage register value interpretation
>
> The calculation had error in getting voltage values from
> MAX17042 registers. The least bit denotes 78.125uV (625/8).
The multipliers I see in the patch are 83 making the voltages somewhat
high and the low 3 bits are not masked off. I'm probably misreading the code.
>
> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
> Signed-off-by: Philip Rakity <prakity@marvell.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
>
> Thanks,
next prev parent reply other threads:[~2012-03-13 21:00 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-24 17:26 [PATCH 0/5] MAX17042 add support for maxim POR procedure dirk.brandewie
2012-01-24 17:26 ` [PATCH 1/5] max17042: Align register definitions with data sheet and init appnote dirk.brandewie
2012-01-24 17:26 ` [PATCH 2/5] max17042: Add POR init procedure from Maxim appnote dirk.brandewie
2012-01-24 17:26 ` [PATCH 3/5] max17042: Add support for signalling change in SOC dirk.brandewie
2012-01-24 17:26 ` [PATCH 4/5] max17042: Fix value scaling for VCELL and avgVCELL dirk.brandewie
2012-03-13 18:19 ` Anton Vorontsov
2012-03-13 21:00 ` bruce robertson [this message]
2012-03-13 21:04 ` Jason Wortham
2012-03-13 22:59 ` Dirk Brandewie
2012-03-14 0:04 ` Jason Wortham
2012-03-13 23:18 ` bruce robertson
2012-03-14 0:37 ` Jason Wortham
2012-01-24 17:26 ` [PATCH 5/5] max17042: Change capacity property to use reported SOC register dirk.brandewie
2012-03-13 18:34 ` Anton Vorontsov
2012-03-13 22:54 ` Dirk Brandewie
2012-02-28 16:17 ` [PATCH 0/5] MAX17042 add support for maxim POR procedure Dirk Brandewie
2012-03-13 18:48 ` Anton Vorontsov
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