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-* Advanced Interrupt Controller (AIC)
-
-Required properties:
-- compatible: Should be "atmel,<chip>-aic"
-- interrupt-controller: Identifies the node as an interrupt controller.
-- interrupt-parent: For single AIC system, it is an empty property.
-- #interrupt-cells: The number of cells to define the interrupts. It sould be 2.
- The first cell is the IRQ number (aka "Peripheral IDentifier" on datasheet).
- The second cell is used to specify flags:
- bits[3:0] trigger type and level flags:
- 1 = low-to-high edge triggered.
- 2 = high-to-low edge triggered.
- 4 = active high level-sensitive.
- 8 = active low level-sensitive.
- Valid combinations are 1, 2, 3, 4, 8.
- Default flag for internal sources should be set to 4 (active high).
-- reg: Should contain AIC registers location and length
-
-Examples:
- /*
- * AIC
- */
- aic: interrupt-controller@fffff000 {
- compatible = "atmel,at91rm9200-aic";
- interrupt-controller;
- interrupt-parent;
- #interrupt-cells = <2>;
- reg = <0xfffff000 0x200>;
- };
-
- /*
- * An interrupt generating device that is wired to an AIC.
- */
- dma: dma-controller@ffffec00 {
- compatible = "atmel,at91sam9g45-dma";
- reg = <0xffffec00 0x200>;
- interrupts = <21 4>;
- };