Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Wed, 31 Aug 2022 15:06:25 +0300
From:   Andy Shevchenko <andriy.shevchenko@intel.com>
To:     Eliav Farber <farbere@amazon.com>
Cc:     jdelvare@suse.com, linux@roeck-us.net, robh+dt@kernel.org,
        p.zabel@pengutronix.de, rtanwar@maxlinear.com,
        linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, talel@amazon.com, hhhawa@amazon.com,
        jonnyc@amazon.com, hanochu@amazon.com, ronenk@amazon.com,
        itamark@amazon.com, shellykz@amazon.com, shorer@amazon.com,
        amitlavi@amazon.com, almogbs@amazon.com, dkl@amazon.com,
        rahul.tanwar@linux.intel.com
Subject: Re: [PATCH v3 13/19] hwmon: (mr75203) modify the temperature
 equation according to series 5 datasheet
Message-ID: <Yw9OwUUD/t9DESQb@smile.fi.intel.com>
References: <20220830192212.28570-1-farbere@amazon.com>
 <20220830192212.28570-14-farbere@amazon.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20220830192212.28570-14-farbere@amazon.com>
Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo
Precedence: bulk

On Tue, Aug 30, 2022 at 07:22:06PM +0000, Eliav Farber wrote:
> Modify the equation and coefficients used to convert the digital output
> to temperature according to series 5 of the Moortec Embedded Temperature
> Sensor (METS) datasheet:
> T = G + H * (n / cal5 - 0.5) + J * F
> 
> Where:
> *) G = 60, H = 200, cal5 = 4094, J = -0.1.
> *) F = frequency clock in MHz.
> *) n is the digital output.
> 
> In code, the G, H and J coefficients are multiplied by a factor of 1000
> to get the temperature in milli-Celsius.
> Final result is clamped in case it exceeds min/max thresholds.
> 
> Change is done since it is not clear where the current equation and

not clear -> unclear

> coefficients came from.

...

> +#define PVT_TEMP_MIN		-40000
> +#define PVT_TEMP_MAX		125000

Unit suffix? _mC perhaps would be enough.

-- 
With Best Regards,
Andy Shevchenko