linux-kernel - Re: [PATCH] iio: mxs-lradc: Fix temperature offset

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Message-ID: <5614C5F8.5020000@i2se.com>
Date:	Wed, 7 Oct 2015 09:12:56 +0200
From:	Stefan Wahren <stefan.wahren@...e.com>
To:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Marek Vasut <marex@...x.de>
Cc:	Lars-Peter Clausen <lars@...afoo.de>, linux-kernel@...r.kernel.org,
	linux-iio@...r.kernel.org,
	Janusz Użycki <j.uzycki@...romaelectronics.com>,
	Jonathan Cameron <jic23@...nel.org>
Subject: Re: [PATCH] iio: mxs-lradc: Fix temperature offset

Am 07.10.2015 um 02:44 schrieb Alexandre Belloni:
> Hi,
>
> On 07/10/2015 at 01:19:09 +0200, Marek Vasut wrote :
>>>> /* The calculated value from the ADC is in Kelvin, we
>>>> * want Celsius for hwmon so the offset is
>>>> - * -272.15 * scale
>>>> + * -273.15 * scale
>>>> */
>>>> - *val = -1075;
>>>> - *val2 = 691699;
>>>> + *val = -1079;
>>>> + *val2 = 644268;
>>>>
>>> i think it would be nice to break down the calculation of these magic values in
>>> a second patch.
>> Indeed, I agree. I hope Alexandre can send another patch for that soon :-)
>>
> On my side, I'm not sure this is worth more than a comment. If
> necessary, I can write that the datasheet specifies that the scale is
> 4/1.012 here also.

I'm okay with that.
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