1*4882a593Smuzhiyun* Advanced Interrupt Controller (AIC) 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunRequired properties: 4*4882a593Smuzhiyun- compatible: Should be: 5*4882a593Smuzhiyun - "atmel,<chip>-aic" where <chip> can be "at91rm9200", "sama5d2", 6*4882a593Smuzhiyun "sama5d3" or "sama5d4" 7*4882a593Smuzhiyun - "microchip,<chip>-aic" where <chip> can be "sam9x60" 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun- interrupt-controller: Identifies the node as an interrupt controller. 10*4882a593Smuzhiyun- #interrupt-cells: The number of cells to define the interrupts. It should be 3. 11*4882a593Smuzhiyun The first cell is the IRQ number (aka "Peripheral IDentifier" on datasheet). 12*4882a593Smuzhiyun The second cell is used to specify flags: 13*4882a593Smuzhiyun bits[3:0] trigger type and level flags: 14*4882a593Smuzhiyun 1 = low-to-high edge triggered. 15*4882a593Smuzhiyun 2 = high-to-low edge triggered. 16*4882a593Smuzhiyun 4 = active high level-sensitive. 17*4882a593Smuzhiyun 8 = active low level-sensitive. 18*4882a593Smuzhiyun Valid combinations are 1, 2, 3, 4, 8. 19*4882a593Smuzhiyun Default flag for internal sources should be set to 4 (active high). 20*4882a593Smuzhiyun The third cell is used to specify the irq priority from 0 (lowest) to 7 21*4882a593Smuzhiyun (highest). 22*4882a593Smuzhiyun- reg: Should contain AIC registers location and length 23*4882a593Smuzhiyun- atmel,external-irqs: u32 array of external irqs. 24*4882a593Smuzhiyun 25*4882a593SmuzhiyunExamples: 26*4882a593Smuzhiyun /* 27*4882a593Smuzhiyun * AIC 28*4882a593Smuzhiyun */ 29*4882a593Smuzhiyun aic: interrupt-controller@fffff000 { 30*4882a593Smuzhiyun compatible = "atmel,at91rm9200-aic"; 31*4882a593Smuzhiyun interrupt-controller; 32*4882a593Smuzhiyun #interrupt-cells = <3>; 33*4882a593Smuzhiyun reg = <0xfffff000 0x200>; 34*4882a593Smuzhiyun }; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* 37*4882a593Smuzhiyun * An interrupt generating device that is wired to an AIC. 38*4882a593Smuzhiyun */ 39*4882a593Smuzhiyun dma: dma-controller@ffffec00 { 40*4882a593Smuzhiyun compatible = "atmel,at91sam9g45-dma"; 41*4882a593Smuzhiyun reg = <0xffffec00 0x200>; 42*4882a593Smuzhiyun interrupts = <21 4 5>; 43*4882a593Smuzhiyun }; 44