CPU Temperature sensor gives incorrect reading

[easytarget]

The CPU temperature as reported by lm-sensors is badly off.

https://github.com/easytarget/MQ-Pro-IO/blob/main/GPIO-examples.md#onboard-cpu-temperature-sensor

This might be a bad hardware situation but...

I think there is a reference that needs to be set in the device tree for the sensor; based on some things I noticed in passing in the tech spec for the D1.

• Eg this may be 'fixable'
• Looking at device trees for other D1 based boards might bear fruit.

Good candidate for a DT overlay first project.

[easytarget]

Maybe they go he offset and stepping wrong here:
https://patchwork.kernel.org/project/linux-riscv/patch/[email protected]/#25642582

[easytarget]

The Thermal device has a voltage reference defined in some device trees, but some of the older ones from the initial rollout do not specify one. Humm.. ??