43 lines
1.0 KiB
Plaintext
43 lines
1.0 KiB
Plaintext
|
============================
|
||
|
|
C-SKY Multi-processors Timer
|
||
|
|
============================
|
||
|
|
|
||
|
|
C-SKY multi-processors timer is designed for C-SKY SMP system and the
|
||
|
|
regs is accessed by cpu co-processor 4 registers with mtcr/mfcr.
|
||
|
|
|
||
|
|
- PTIM_CTLR "cr<0, 14>" Control reg to start reset timer.
|
||
|
|
- PTIM_TSR "cr<1, 14>" Interrupt cleanup status reg.
|
||
|
|
- PTIM_CCVR "cr<3, 14>" Current counter value reg.
|
||
|
|
- PTIM_LVR "cr<6, 14>" Window value reg to trigger next event.
|
||
|
|
|
||
|
|
==============================
|
||
|
|
timer node bindings definition
|
||
|
|
==============================
|
||
|
|
|
||
|
|
Description: Describes SMP timer
|
||
|
|
|
||
|
|
PROPERTIES
|
||
|
|
|
||
|
|
- compatible
|
||
|
|
Usage: required
|
||
|
|
Value type: <string>
|
||
|
|
Definition: must be "csky,mptimer"
|
||
|
|
- clocks
|
||
|
|
Usage: required
|
||
|
|
Value type: <node>
|
||
|
|
Definition: must be input clk node
|
||
|
|
- interrupts
|
||
|
|
Usage: required
|
||
|
|
Value type: <u32>
|
||
|
|
Definition: must be timer irq num defined by soc
|
||
|
|
|
||
|
|
Examples:
|
||
|
|
---------
|
||
|
|
|
||
|
|
timer: timer {
|
||
|
|
compatible = "csky,mptimer";
|
||
|
|
clocks = <&dummy_apb_clk>;
|
||
|
|
interrupts = <16>;
|
||
|
|
interrupt-parent = <&intc>;
|
||
|
|
};
|