Re: [PATCH v2 14/16] hwmon: (mr75203) parse thermal coefficients from device-tree

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On 8/18/2022 11:28 PM, Guenter Roeck wrote:
The calculation was just changed to use new defaults in a previous
patch. This patch makes it quite clear that the coefficients
are implementation (?) dependent. So the previous patch just changes
the defaults to (presumably) the coefficients used in your system.
That is inappropriate. Adding non-default corefficients is ok
and makes sense is supported by the chip, but changing defaults
isn't.
The calculation was changed in previous patch to match series 5 of the
Moortec Embedded Temperature Sensor (METS) datasheet.
In our SOC we use series 6 which has a slightly different equation and
different coefficients.
I did the changes in steps.
With this last change, both series 5 and 6 are supported, in addition to
calibrated vs. non-calibrated modes.
In addition the data sheet just recommends default values but they also
specifically mention that actual values might vary from product to product.

--
Regards, Eliav



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