Re: [PATCH v6 1/2] hwmon: (mr75203) modify the temperature equation according to series 5 datasheet

From: Sudip Mukherjee
Date: Wed Sep 21 2022 - 09:03:45 EST


On Wed, Sep 21, 2022 at 1:18 PM Eliav Farber <farbere@xxxxxxxxxx> 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 unclear where the current equation and
> coefficients came from.
>
> Signed-off-by: Eliav Farber <farbere@xxxxxxxxxx>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>

Only build tested on top of next-20220921 after reverting v5 patches.

Tested-by: Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx>


--
Regards
Sudip