The XPm_GetOpCharacteristic EEMI
API allows a PM master to request PMC to return information about an operating
characteristic of a component. Currently, the following device characteristics can
be requested:
- Temperature of the SoC
- Wake-up latency of Cores, Power Islands and rails, and PLL locking time
This API also allows registering notification by an application
through the XPm_RegisterNotifier API. Using this
API, a PU can request the PMC to call its notify callback whenever a qualifying
event occurs. you can request to be notified for a specific or any event related to
a specific node. The following two qualifying events would cause the invocation of
the callback function:
- State change of the node for which callback is registered
- Zero users of the node for which callback is registered
In addition, if you are no longer interested in receiving notifications about events related to the node that the callback was previously requested, you can unregister it.
For more information, refer to OS and Libraries Document Collection (UG643).