1* ARM Vectored Interrupt Controller 2 3One or more Vectored Interrupt Controllers (VIC's) can be connected in an ARM 4system for interrupt routing. For multiple controllers they can either be 5nested or have the outputs wire-OR'd together. 6 7Required properties: 8 9- compatible : should be one of 10 "arm,pl190-vic" 11 "arm,pl192-vic" 12- interrupt-controller : Identifies the node as an interrupt controller 13- #interrupt-cells : The number of cells to define the interrupts. Must be 1 as 14 the VIC has no configuration options for interrupt sources. The cell is a u32 15 and defines the interrupt number. 16- reg : The register bank for the VIC. 17 18Optional properties: 19 20- interrupts : Interrupt source for parent controllers if the VIC is nested. 21- valid-mask : A one cell big bit mask of valid interrupt sources. Each bit 22 represents single interrupt source, starting from source 0 at LSb and ending 23 at source 31 at MSb. A bit that is set means that the source is wired and 24 clear means otherwise. If unspecified, defaults to all valid. 25- valid-wakeup-mask : A one cell big bit mask of interrupt sources that can be 26 configured as wake up source for the system. Order of bits is the same as for 27 valid-mask property. A set bit means that this interrupt source can be 28 configured as a wake up source for the system. If unspecied, defaults to all 29 interrupt sources configurable as wake up sources. 30 31Example: 32 33 vic0: interrupt-controller@60000 { 34 compatible = "arm,pl192-vic"; 35 interrupt-controller; 36 #interrupt-cells = <1>; 37 reg = <0x60000 0x1000>; 38 39 valid-mask = <0xffffff7f>; 40 valid-wakeup-mask = <0x0000ff7f>; 41 }; 42