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C-SKY Performance Monitor Units
C-SKY Performance Monitor is designed for ck807/ck810/ck860 SMP soc and
it could count cpu's events for helping analysis performance issues.
PMU node bindings definition
Description: Describes PMU
- compatible
Usage: required
Value type: <string>
Definition: must be "csky,csky-pmu"
- interrupts
Usage: required
Value type: <u32 IRQ_TYPE_XXX>
Definition: must be pmu irq num defined by soc
- count-width
Usage: optional
Value type: <u32>
Definition: the width of pmu counter
#include <dt-bindings/interrupt-controller/irq.h>
pmu: performace-monitor {
compatible = "csky,csky-pmu";
interrupts = <23 IRQ_TYPE_EDGE_RISING>;
interrupt-parent = <&intc>;
count-width = <48>;