Based on kernel version 3.16. Page generated on 2014-08-06 21:36 EST.
1 * Advanced Interrupt Controller (AIC) 2 3 Required properties: 4 - compatible: Should be "atmel,<chip>-aic" 5 <chip> can be "at91rm9200" or "sama5d3" 6 - interrupt-controller: Identifies the node as an interrupt controller. 7 - interrupt-parent: For single AIC system, it is an empty property. 8 - #interrupt-cells: The number of cells to define the interrupts. It should be 3. 9 The first cell is the IRQ number (aka "Peripheral IDentifier" on datasheet). 10 The second cell is used to specify flags: 11 bits[3:0] trigger type and level flags: 12 1 = low-to-high edge triggered. 13 2 = high-to-low edge triggered. 14 4 = active high level-sensitive. 15 8 = active low level-sensitive. 16 Valid combinations are 1, 2, 3, 4, 8. 17 Default flag for internal sources should be set to 4 (active high). 18 The third cell is used to specify the irq priority from 0 (lowest) to 7 19 (highest). 20 - reg: Should contain AIC registers location and length 21 - atmel,external-irqs: u32 array of external irqs. 22 23 Examples: 24 /* 25 * AIC 26 */ 27 aic: interrupt-controller@fffff000 { 28 compatible = "atmel,at91rm9200-aic"; 29 interrupt-controller; 30 interrupt-parent; 31 #interrupt-cells = <3>; 32 reg = <0xfffff000 0x200>; 33 }; 34 35 /* 36 * An interrupt generating device that is wired to an AIC. 37 */ 38 dma: dma-controller@ffffec00 { 39 compatible = "atmel,at91sam9g45-dma"; 40 reg = <0xffffec00 0x200>; 41 interrupts = <21 4 5>; 42 };