1=============================== 2C-SKY Performance Monitor Units 3=============================== 4 5C-SKY Performance Monitor is designed for ck807/ck810/ck860 SMP soc and 6it could count cpu's events for helping analysis performance issues. 7 8============================ 9PMU node bindings definition 10============================ 11 12 Description: Describes PMU 13 14 PROPERTIES 15 16 - compatible 17 Usage: required 18 Value type: <string> 19 Definition: must be "csky,csky-pmu" 20 - interrupts 21 Usage: required 22 Value type: <u32 IRQ_TYPE_XXX> 23 Definition: must be pmu irq num defined by soc 24 - count-width 25 Usage: optional 26 Value type: <u32> 27 Definition: the width of pmu counter 28 29Examples: 30--------- 31#include <dt-bindings/interrupt-controller/irq.h> 32 33 pmu: performace-monitor { 34 compatible = "csky,csky-pmu"; 35 interrupts = <23 IRQ_TYPE_EDGE_RISING>; 36 interrupt-parent = <&intc>; 37 count-width = <48>; 38 }; 39