csky,mpintc.txt

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    1 ===========================================
    2 C-SKY Multi-processors Interrupt Controller
    3 ===========================================
    4 
    5 C-SKY Multi-processors Interrupt Controller is designed for ck807/ck810/ck860
    6 SMP soc, and it also could be used in non-SMP system.
    7 
    8 Interrupt number definition:
    9   0-15  : software irq, and we use 15 as our IPI_IRQ.
   10  16-31  : private  irq, and we use 16 as the co-processor timer.
   11  31-1024: common irq for soc ip.
   12 
   13 Interrupt trigger mode: (Defined in dt-bindings/interrupt-controller/irq.h)
   14  IRQ_TYPE_LEVEL_HIGH (default)
   15  IRQ_TYPE_LEVEL_LOW
   16  IRQ_TYPE_EDGE_RISING
   17  IRQ_TYPE_EDGE_FALLING
   18 
   19 =============================
   20 intc node bindings definition
   21 =============================
   22 
   23         Description: Describes SMP interrupt controller
   24 
   25         PROPERTIES
   26 
   27         - compatible
   28                 Usage: required
   29                 Value type: <string>
   30                 Definition: must be "csky,mpintc"
   31         - #interrupt-cells
   32                 Usage: required
   33                 Value type: <u32>
   34                 Definition: <2>
   35         - interrupt-controller:
   36                 Usage: required
   37 
   38 Examples: ("interrupts = <irq_num IRQ_TYPE_XXX>")
   39 ---------
   40 #include <dt-bindings/interrupt-controller/irq.h>
   41 
   42         intc: interrupt-controller {
   43                 compatible = "csky,mpintc";
   44                 #interrupt-cells = <2>;
   45                 interrupt-controller;
   46         };
   47 
   48         device: device-example {
   49                 ...
   50                 interrupts = <34 IRQ_TYPE_EDGE_RISING>;
   51                 interrupt-parent = <&intc>;
   52         };

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sys/contrib/device-tree/Bindings/interrupt-controller/csky,mpintc.txt