xref: /freebsd/sys/contrib/device-tree/Bindings/mips/cavium/cib.txt (revision 3ff01b231dfa83d518854c63e7c9cd1debd1139e)
1* Cavium Interrupt Bus widget
2
3Properties:
4- compatible: "cavium,octeon-7130-cib"
5
6  Compatibility with cn70XX SoCs.
7
8- interrupt-controller:  This is an interrupt controller.
9
10- reg: Two elements consisting of the addresses of the RAW and EN
11  registers of the CIB block
12
13- cavium,max-bits: The index (zero based) of the highest numbered bit
14  in the CIB block.
15
16- interrupts: The CIU line to which the CIB block is connected.
17
18- #interrupt-cells: Must be <2>.  The first cell is the bit within the
19   CIB.  The second cell specifies the triggering semantics of the
20   line.
21
22Example:
23
24	interrupt-controller@107000000e000 {
25		compatible = "cavium,octeon-7130-cib";
26		reg = <0x10700 0x0000e000 0x0 0x8>, /* RAW */
27		      <0x10700 0x0000e100 0x0 0x8>; /* EN */
28		cavium,max-bits = <23>;
29
30		interrupt-controller;
31		interrupt-parent = <&ciu>;
32		interrupts = <1 24>;
33		/* Interrupts are specified by two parts:
34		 * 1) Bit number in the CIB* registers
35		 * 2) Triggering (1 - edge rising
36		 *		  2 - edge falling
37		 *		  4 - level active high
38		 *		  8 - level active low)
39		 */
40		#interrupt-cells = <2>;
41	};
42