1 * Advanced Interrupt Controller (AIC)
4 - compatible: Should be "atmel,<chip>-aic"
5 - interrupt-controller: Identifies the node as an interrupt controller.
6 - interrupt-parent: For single AIC system, it is an empty property.
7 - #interrupt-cells: The number of cells to define the interrupts. It sould be 2.
8 The first cell is the IRQ number (aka "Peripheral IDentifier" on datasheet).
9 The second cell is used to specify flags:
10 bits[3:0] trigger type and level flags:
11 1 = low-to-high edge triggered.
12 2 = high-to-low edge triggered.
13 4 = active high level-sensitive.
14 8 = active low level-sensitive.
15 Valid combinations are 1, 2, 3, 4, 8.
16 Default flag for internal sources should be set to 4 (active high).
17 - reg: Should contain AIC registers location and length
23 aic: interrupt-controller@fffff000 {
24 compatible = "atmel,at91rm9200-aic";
27 #interrupt-cells = <2>;
28 reg = <0xfffff000 0x200>;
32 * An interrupt generating device that is wired to an AIC.
34 dma: dma-controller@ffffec00 {
35 compatible = "atmel,at91sam9g45-dma";
36 reg = <0xffffec00 0x200>;