On Wed, Mar 08, 2017 at 09:24:38AM +0100, Carlo Caione wrote: > On Fri, Mar 3, 2017 at 10:14 AM, Carlo Caione <carlo@xxxxxxxxxx> wrote: > > From: Carlo Caione <carlo@xxxxxxxxxxxx> > > > > The implementation details for SCPI seems to suggest that the sensor > > readings must be reported by SCP using a well defined scale > > (millidegree Celsius for temperature, millivolts for voltage, > > milliamperes for current, microwatts for power and microjoules for > > energy). > > > > This is also important for the interaction with other subsystems: for > > example both the thermal sub-system and the hwmon sysfs interface expect > > the temperature expressed in millidegree Celsius. > > > > Unfortunately since this behaviour is dependent on the firmware > > implementation there are cases where the sensor readings are reported > > using a different scale. For example in the Amlogic SoCs the > > temperature is reported in degree and not millidegree Celsius. > > > > In this patchset we introduce a new DT property `scpi,sensors-scale` that is > > used by the scpi-hwmon driver to convert the sensor readings to the expected > > scale. > > > > v2: > > - Added data validation (scale != 0) > > - s/unsigned int/u32/ for the array > > - Switched to array initialiser notation > > - Introduced scpi_scale_reading() > > gentle ping > Waiting for Rob to provide feedback on the devicetree property. Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
