From: Lukasz Luba Date: Wed, 2 Mar 2022 11:29:17 +0000 (+0000) Subject: Documentation: EM: Describe new registration method using DT X-Git-Tag: v5.18-rc1~68^2~1^2^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f48a0c475c2a;p=thirdparty%2Fkernel%2Flinux.git 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: Lukasz Luba Signed-off-by: Viresh Kumar --- diff --git a/Documentation/power/energy-model.rst b/Documentation/power/energy-model.rst index 5ac62a7b4b7cd..49549aab41b42 100644 --- a/Documentation/power/energy-model.rst +++ b/Documentation/power/energy-model.rst @@ -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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~