1*4882a593Smuzhiyun* ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU) 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunARMv8.2 introduces the optional Statistical Profiling Extension for collecting 4*4882a593Smuzhiyunperformance sample data using an in-memory trace buffer. 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun** SPE Required properties: 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun- compatible : should be one of: 9*4882a593Smuzhiyun "arm,statistical-profiling-extension-v1" 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun- interrupts : Exactly 1 PPI must be listed. For heterogeneous systems where 12*4882a593Smuzhiyun SPE is only supported on a subset of the CPUs, please consult 13*4882a593Smuzhiyun the arm,gic-v3 binding for details on describing a PPI partition. 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun** Example: 16*4882a593Smuzhiyun 17*4882a593Smuzhiyunspe-pmu { 18*4882a593Smuzhiyun compatible = "arm,statistical-profiling-extension-v1"; 19*4882a593Smuzhiyun interrupts = <GIC_PPI 05 IRQ_TYPE_LEVEL_HIGH &part1>; 20*4882a593Smuzhiyun}; 21