For LPC55(S)1x/2x/6x users, please update your fsl_power_lib to SDK2.8.2.
The previous SDK(2.6.x and 2.7.x)'s power library have two known function bugs,
1. FRO trim value can not be recovery correctly after wakeup from deep-sleep / power-down / deep power-down.
-- this means the 12MHz FRO frequency is different for after boot-process(11.99 MHz for example) and wakeup from low-power modes(11.89MHz for example).
-- The reason is the FRO trim value not recovery after wakeup.
2. Cap-bank value can not be set correctly by use power lib capbank trim API.
-- This is a software bug which fixed in SDK2.8.2 already.
Just replacement the power_lib library file should be workable for most of customers. the API should be compatible.
Thank you!
Magicoe