Documentation/devicetree/bindings/csky/pmu.txt

   1 ===============================
   2 C-SKY Performance Monitor Units
   3 ===============================
   4
   5 C-SKY Performance Monitor is designed for ck807/ck810/ck860 SMP soc and
   6 it could count cpu's events for helping analysis performance issues.
   7
   8 ============================
   9 PMU 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
  29 Examples:
  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         };