linux/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm3380-l2-intc.txt
Rob Herring 791d3ef2e1 dt-bindings: remove 'interrupt-parent' from bindings
'interrupt-parent' is often documented as part of define bindings, but
it is really outside the scope of a device binding. It's never required
in a given node as it is often inherited from a parent node. Or it can
be implicit if a parent node is an 'interrupt-controller' node. So
remove it from all the binding files.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
2018-07-25 14:09:39 -06:00

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Broadcom BCM3380-style Level 1 / Level 2 interrupt controller
This interrupt controller shows up in various forms on many BCM338x/BCM63xx
chipsets. It has the following properties:
- outputs a single interrupt signal to its interrupt controller parent
- contains one or more enable/status word pairs, which often appear at
different offsets in different blocks
- no atomic set/clear operations
Required properties:
- compatible: should be "brcm,bcm3380-l2-intc"
- reg: specifies one or more enable/status pairs, in the following format:
<enable_reg 0x4 status_reg 0x4>...
- interrupt-controller: identifies the node as an interrupt controller
- #interrupt-cells: specifies the number of cells needed to encode an interrupt
source, should be 1.
- interrupts: specifies the interrupt line in the interrupt-parent controller
node, valid values depend on the type of parent interrupt controller
Optional properties:
- brcm,irq-can-wake: if present, this means the L2 controller can be used as a
wakeup source for system suspend/resume.
Example:
irq0_intc: interrupt-controller@10000020 {
compatible = "brcm,bcm3380-l2-intc";
reg = <0x10000024 0x4 0x1000002c 0x4>,
<0x10000020 0x4 0x10000028 0x4>;
interrupt-controller;
#interrupt-cells = <1>;
interrupt-parent = <&cpu_intc>;
interrupts = <2>;
};