| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | }; |