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- ===========================================
- C-SKY Multi-processors Interrupt Controller
- ===========================================
- C-SKY Multi-processors Interrupt Controller is designed for ck807/ck810/ck860
- SMP soc, and it also could be used in non-SMP system.
- Interrupt number definition:
- 0-15 : software irq, and we use 15 as our IPI_IRQ.
- 16-31 : private irq, and we use 16 as the co-processor timer.
- 31-1024: common irq for soc ip.
- Interrupt trigger mode: (Defined in dt-bindings/interrupt-controller/irq.h)
- IRQ_TYPE_LEVEL_HIGH (default)
- IRQ_TYPE_LEVEL_LOW
- IRQ_TYPE_EDGE_RISING
- IRQ_TYPE_EDGE_FALLING
- =============================
- intc node bindings definition
- =============================
- Description: Describes SMP interrupt controller
- PROPERTIES
- - compatible
- Usage: required
- Value type: <string>
- Definition: must be "csky,mpintc"
- - #interrupt-cells
- Usage: required
- Value type: <u32>
- Definition: <2>
- - interrupt-controller:
- Usage: required
- Examples: ("interrupts = <irq_num IRQ_TYPE_XXX>")
- ---------
- #include <dt-bindings/interrupt-controller/irq.h>
- intc: interrupt-controller {
- compatible = "csky,mpintc";
- #interrupt-cells = <2>;
- interrupt-controller;
- };
- device: device-example {
- ...
- interrupts = <34 IRQ_TYPE_EDGE_RISING>;
- interrupt-parent = <&intc>;
- };
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