On 8/31/2022 11:23 AM, Philipp Zabel wrote:
On Di, 2022-08-30 at 19:22 +0000, Eliav Farber wrote:
Add optional "moortec,ts-series" property to define the temperature
equation and coefficients that shall be used to convert the digital
output to value in milli-Celsius.
Supported series: 5 (default) and 6.
Is this the difference between mr75xxx and mr76xxx series?
If so, should be a compatible "moortec,mr76006" instead?
If the temperature equation could be derived from the compatible, this
property would not be necessary.
The PVT (Process, Voltage, Temperature) monitoring logic can be
constructed from many different sub-blocks:
*) CONTROLLER (mr75203) - controlling TS, PD and VM.
*) TS (mr74137) - for measuring temperature in ring.
*) PD (mr74139) - for measuring IO based transistors.
*) VM (mr74138) - for measuring voltage rails across the SoC.
*) Ring oscillators (mr76007/mr76008)
*) Pre-scalers (mr76006)
Besides mr75203 which is digital all other IPs are analog.
There is a single mr75203 and there can be several or none of the other
units.
The kernel driver is only for the controller (mr75203).
The series 5 or 6 is relevant for the TS (mr74137) and not for the
controller (mr75203).
Each of the analog units can have a different series number (for example
we use series 3 of the VM).
That is why I didn't change the compatible of mr75203, and instead added
a TS-series parameter.
--
Regards, Eliav
