Commit f48a0c47 authored by Lukasz Luba's avatar Lukasz Luba Committed by Viresh Kumar
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Documentation: EM: Describe new registration method using DT 



The new registration method allows to get power values from the DT OPP
definition. The new OPP entry property "opp-microwatt" contains total
power expressed in micro-Watts. Align the EM documentation with this
new possible registration method of EM.

Signed-off-by: default avatarLukasz Luba <lukasz.luba@arm.com>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent 32bf8bc9

Documentation/power/energy-model.rst

+10 −0
Original line number Diff line number Diff line
@@ -113,6 +113,16 @@ to: return warning/error, stop working or panic. 
See Section 3. for an example of driver implementing this

callback, or Section 2.4 for further documentation on this API



Registration of EM using DT

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



The  EM can also be registered using OPP framework and information in DT

"operating-points-v2". Each OPP entry in DT can be extended with a property

"opp-microwatt" containing micro-Watts power value. This OPP DT property

allows a platform to register EM power values which are reflecting total power

(static + dynamic). These power values might be coming directly from

experiments and measurements.



Registration of 'simple' EM

~~~~~~~~~~~~~~~~~~~~~~~~~~~