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