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