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| -rw-r--r-- | Documentation/devicetree/bindings/csky/pmu.txt | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/csky/pmu.txt b/Documentation/devicetree/bindings/csky/pmu.txt new file mode 100644 index 000000000000..728d05ca6a1c --- /dev/null +++ b/Documentation/devicetree/bindings/csky/pmu.txt @@ -0,0 +1,38 @@ +=============================== +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 + + PROPERTIES + + - 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 + +Examples: +--------- +#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>; + }; |