1=========================================== 2C-SKY Multi-processors Interrupt Controller 3=========================================== 4 5C-SKY Multi-processors Interrupt Controller is designed for ck807/ck810/ck860 6SMP soc, and it also could be used in non-SMP system. 7 8Interrupt 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 13Interrupt 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============================= 20intc 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 38Examples: ("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 }; 53