linux/Documentation/devicetree/bindings/interrupt-controller/al,alpine-msix.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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Alpine MSIX controller
See arm,gic-v3.txt for SPI and MSI definitions.
Required properties:
- compatible: should be "al,alpine-msix"
- reg: physical base address and size of the registers
- interrupt-controller: identifies the node as an interrupt controller
- msi-controller: identifies the node as an PCI Message Signaled Interrupt
controller
- al,msi-base-spi: SPI base of the MSI frame
- al,msi-num-spis: number of SPIs assigned to the MSI frame, relative to SPI0
Example:
msix: msix {
compatible = "al,alpine-msix";
reg = <0x0 0xfbe00000 0x0 0x100000>;
interrupt-parent = <&gic>;
interrupt-controller;
msi-controller;
al,msi-base-spi = <160>;
al,msi-num-spis = <160>;
};