[PATCH v3] arm-soc: Add support for Sigma Designs Tango4

Mark Rutland mark.rutland at arm.com
Mon Oct 19 10:32:36 PDT 2015

> >>>> No pl310? A9 performance mon?
> >
> > Found "arm,cortex-a9-pmu" in arch/arm/kernel/perf_event_v7.c
> > Are the PMU registers available from non-secure mode, or is TrustZone
> > going to get in the way?
> I don't recall off-hand.

Judging by the access permissions tables in c12.9 of the ARM ARM (ARM DDI
0406C.c), they're always accessible from non-secure PL1 in the absence
of the virtualization extensions.


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