* ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU) ARMv8.2 introduces the optional Statistical Profiling Extension for collecting performance sample data using an in-memory trace buffer. ** SPE Required properties: - compatible : should be one of: "arm,statistical-profiling-extension-v1" - interrupts : Exactly 1 PPI must be listed. For heterogeneous systems where SPE is only supported on a subset of the CPUs, please consult the arm,gic-v3 binding for details on describing a PPI partition. ** Example: spe-pmu { compatible = "arm,statistical-profiling-extension-v1"; interrupts = ; };