18c2ecf20Sopenharmony_ci* ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU) 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciARMv8.2 introduces the optional Statistical Profiling Extension for collecting 48c2ecf20Sopenharmony_ciperformance sample data using an in-memory trace buffer. 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci** SPE Required properties: 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci- compatible : should be one of: 98c2ecf20Sopenharmony_ci "arm,statistical-profiling-extension-v1" 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci- interrupts : Exactly 1 PPI must be listed. For heterogeneous systems where 128c2ecf20Sopenharmony_ci SPE is only supported on a subset of the CPUs, please consult 138c2ecf20Sopenharmony_ci the arm,gic-v3 binding for details on describing a PPI partition. 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci** Example: 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_cispe-pmu { 188c2ecf20Sopenharmony_ci compatible = "arm,statistical-profiling-extension-v1"; 198c2ecf20Sopenharmony_ci interrupts = <GIC_PPI 05 IRQ_TYPE_LEVEL_HIGH &part1>; 208c2ecf20Sopenharmony_ci}; 21