| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | ============================ |
| 2 | C-SKY Multi-processors Timer |
| 3 | ============================ |
| 4 | |
| 5 | C-SKY multi-processors timer is designed for C-SKY SMP system and the |
| 6 | regs is accessed by cpu co-processor 4 registers with mtcr/mfcr. |
| 7 | |
| 8 | - PTIM_CTLR "cr<0, 14>" Control reg to start reset timer. |
| 9 | - PTIM_TSR "cr<1, 14>" Interrupt cleanup status reg. |
| 10 | - PTIM_CCVR "cr<3, 14>" Current counter value reg. |
| 11 | - PTIM_LVR "cr<6, 14>" Window value reg to trigger next event. |
| 12 | |
| 13 | ============================== |
| 14 | timer node bindings definition |
| 15 | ============================== |
| 16 | |
| 17 | Description: Describes SMP timer |
| 18 | |
| 19 | PROPERTIES |
| 20 | |
| 21 | - compatible |
| 22 | Usage: required |
| 23 | Value type: <string> |
| 24 | Definition: must be "csky,mptimer" |
| 25 | - clocks |
| 26 | Usage: required |
| 27 | Value type: <node> |
| 28 | Definition: must be input clk node |
| 29 | - interrupts |
| 30 | Usage: required |
| 31 | Value type: <u32> |
| 32 | Definition: must be timer irq num defined by soc |
| 33 | |
| 34 | Examples: |
| 35 | --------- |
| 36 | |
| 37 | timer: timer { |
| 38 | compatible = "csky,mptimer"; |
| 39 | clocks = <&dummy_apb_clk>; |
| 40 | interrupts = <16>; |
| 41 | interrupt-parent = <&intc>; |
| 42 | }; |