mbox series

[PATCHv2,0/2] coresight: etm4x: Add support to skip trace unit power up

Message ID cover.1589485594.git.saiprakash.ranjan@codeaurora.org
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Series coresight: etm4x: Add support to skip trace unit power up | expand

Message

Sai Prakash Ranjan May 14, 2020, 7:57 p.m. UTC 
This series adds support to skip powering up of trace unit on systems
with an errata which stops CPU watchdog counter when power up bit is
set (TRCPDCR.PU = 1). Setting this bit is not required on Qualcomm
Technologies Inc. chipsets where this errata exists since the ETMs
are in the same power domain as their respective CPU cores.

Tingwei Zhang (2):
  coresight: etm4x: Add support to skip trace unit power up
  dt-bindings: arm: coresight: Add support to skip trace unit power up

 .../devicetree/bindings/arm/coresight.txt     |  7 +++++
 drivers/hwtracing/coresight/coresight-etm4x.c | 27 ++++++++++++-------
 drivers/hwtracing/coresight/coresight-etm4x.h |  3 +++
 3 files changed, 27 insertions(+), 10 deletions(-)