3 In Mediatek SOCs, the CIRQ is a low power interrupt controller designed to
4 work outside MCUSYS which comprises with Cortex-Ax cores,CCI and GIC.
5 The external interrupts (outside MCUSYS) will feed through CIRQ and connect
6 to GIC in MCUSYS. When CIRQ is enabled, it will record the edge-sensitive
7 interrupts and generate a pulse signal to parent interrupt controller when
8 flush command is executed. With CIRQ, MCUSYS can be completely turned off
9 to improve the system power consumption without losing interrupts.
12 - compatible: should be one of
13 - "mediatek,mt2701-cirq" for mt2701 CIRQ
14 - "mediatek,mt8135-cirq" for mt8135 CIRQ
15 - "mediatek,mt8173-cirq" for mt8173 CIRQ
16 and "mediatek,cirq" as a fallback.
17 - interrupt-controller : Identifies the node as an interrupt controller.
18 - #interrupt-cells : Use the same format as specified by GIC in arm,gic.txt.
19 - reg: Physical base address of the cirq registers and length of memory
21 - mediatek,ext-irq-range: Identifies external irq number range in different
25 cirq: interrupt-controller@10204000 {
26 compatible = "mediatek,mt2701-cirq",
29 #interrupt-cells = <3>;
30 interrupt-parent = <&sysirq>;
31 reg = <0 0x10204000 0 0x400>;
32 mediatek,ext-irq-start = <32 200>;