1BCM2835 Top-Level ("ARMCTRL") Interrupt Controller
2
3The BCM2835 contains a custom top-level interrupt controller, which supports
472 interrupt sources using a 2-level register scheme. The interrupt
5controller, or the HW block containing it, is referred to occasionally
6as "armctrl" in the SoC documentation, hence naming of this binding.
7
8The BCM2836 contains the same interrupt controller with the same
9interrupts, but the per-CPU interrupt controller is the root, and an
10interrupt there indicates that the ARMCTRL has an interrupt to handle.
11
12Required properties:
13
14- compatible : should be "brcm,bcm2835-armctrl-ic" or
15                 "brcm,bcm2836-armctrl-ic"
16- reg : Specifies base physical address and size of the registers.
17- interrupt-controller : Identifies the node as an interrupt controller
18- #interrupt-cells : Specifies the number of cells needed to encode an
19  interrupt source. The value shall be 2.
20
21  The 1st cell is the interrupt bank; 0 for interrupts in the "IRQ basic
22  pending" register, or 1/2 respectively for interrupts in the "IRQ pending
23  1/2" register.
24
25  The 2nd cell contains the interrupt number within the bank. Valid values
26  are 0..7 for bank 0, and 0..31 for bank 1.
27
28Additional required properties for brcm,bcm2836-armctrl-ic:
29- interrupts : Specifies the interrupt on the parent for this interrupt
30  controller to handle.
31
32The interrupt sources are as follows:
33
34Bank 0:
350: ARM_TIMER
361: ARM_MAILBOX
372: ARM_DOORBELL_0
383: ARM_DOORBELL_1
394: VPU0_HALTED
405: VPU1_HALTED
416: ILLEGAL_TYPE0
427: ILLEGAL_TYPE1
43
44Bank 1:
450: TIMER0
461: TIMER1
472: TIMER2
483: TIMER3
494: CODEC0
505: CODEC1
516: CODEC2
527: VC_JPEG
538: ISP
549: VC_USB
5510: VC_3D
5611: TRANSPOSER
5712: MULTICORESYNC0
5813: MULTICORESYNC1
5914: MULTICORESYNC2
6015: MULTICORESYNC3
6116: DMA0
6217: DMA1
6318: VC_DMA2
6419: VC_DMA3
6520: DMA4
6621: DMA5
6722: DMA6
6823: DMA7
6924: DMA8
7025: DMA9
7126: DMA10
7227: DMA11-14 - shared interrupt for DMA 11 to 14
7328: DMAALL - triggers on all dma interrupts (including chanel 15)
7429: AUX
7530: ARM
7631: VPUDMA
77
78Bank 2:
790: HOSTPORT
801: VIDEOSCALER
812: CCP2TX
823: SDC
834: DSI0
845: AVE
856: CAM0
867: CAM1
878: HDMI0
889: HDMI1
8910: PIXELVALVE1
9011: I2CSPISLV
9112: DSI1
9213: PWA0
9314: PWA1
9415: CPR
9516: SMI
9617: GPIO0
9718: GPIO1
9819: GPIO2
9920: GPIO3
10021: VC_I2C
10122: VC_SPI
10223: VC_I2SPCM
10324: VC_SDIO
10425: VC_UART
10526: SLIMBUS
10627: VEC
10728: CPG
10829: RNG
10930: VC_ARASANSDIO
11031: AVSPMON
111
112Example:
113
114/* BCM2835, first level */
115intc: interrupt-controller {
116	compatible = "brcm,bcm2835-armctrl-ic";
117	reg = <0x7e00b200 0x200>;
118	interrupt-controller;
119	#interrupt-cells = <2>;
120};
121
122/* BCM2836, second level */
123intc: interrupt-controller {
124	compatible = "brcm,bcm2836-armctrl-ic";
125	reg = <0x7e00b200 0x200>;
126	interrupt-controller;
127	#interrupt-cells = <2>;
128
129	interrupt-parent = <&local_intc>;
130	interrupts = <8>;
131};
132