tree 22ffac2ceef1aa4c5adbe8a643f0b7a0c95dbed7
parent e8a1443dfe0320c82b5e89310565dd942789777d
author Pratik Patel <pratikp@codeaurora.org> 1358907837 -0800
committer Pratik Patel <pratikp@codeaurora.org> 1358982537 -0800

coresight: hotplug enable/disable etm only for round robin access

Enable and disable ETM during hotplug operations only if ETM is
allowed round-robin access by the funnel when all the ETMs share
the same funnel priority.

For 8960, 8064, etc it is observed that sometimes a core's ETM is
starved by other core ETMs constantly producing data. This works
around an issue seen where setting the prog bit of a core's ETMCR
(i.e. ETMCR[10]) doesn't result in that core's ETMSR[1] getting
set thereby triggering the "timeout while setting prog bit"
warning. Subsequently performaing a manual ETB flush as part of
disabling ETB to retrieve the collected trace data also fails.

Change-Id: I6dd37979058644495d945e80e6a2de4696fc5a20
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>