All trace register accesses through the external debug interface behave as if the processor power domain
is powered down when debug double lock is set.
Related information
Arm® CoreSight Architecture Specification
Chapter C2 PMU on page C2-585
C3 ETM
C3.1 About the ETM
100236_0100_00_en Copyright © 2015–2017, 2019 Arm Limited or its affiliates. All rights
reserved.
C3-597
Non-Confidential