A running timer will block DeepSleep, which would normally be
good because we don't want the timer to accidentally lose counts.
We don't care about that for us_ticker (If we're requesting deepsleep
the upper layers already determined that they are okay with that),
so explicitly stop the us_ticker timer before we go to sleep and
start it back up afterwards.
There are two timers, Timer0 and Timer1, available on the PSoC64. Timer0
has 8 channels and Timer1 has 24 channels. TF-M regression tests make
use of Timer0 Channel 0 and Timer0 Channel 1. Therefore, reserve the
timer channels used by TF-M. This approach can be replaced once we have
a way to allocate dedicated timers for TF-M and Mbed OS.
Signed-off-by: Devaraj Ranganna <devaraj.ranganna@arm.com>
Signed-off-by: Vikas Katariya <vikas.katariya@arm.com>
Kyle Kearney
Devaraj Ranganna
Volodymyr Medvid