linux/Documentation/devicetree/bindings/serial/qca,ar9330-uart.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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* Qualcomm Atheros AR9330 High-Speed UART
Required properties:
- compatible: Must be "qca,ar9330-uart"
- reg: Specifies the physical base address of the controller and
the length of the memory mapped region.
- interrupts: Specifies the interrupt source of the parent interrupt
controller. The format of the interrupt specifier depends on the
parent interrupt controller.
Additional requirements:
Each UART port must have an alias correctly numbered in "aliases"
node.
Example:
aliases {
serial0 = &uart0;
};
uart0: uart@18020000 {
compatible = "qca,ar9330-uart";
reg = <0x18020000 0x14>;
interrupt-parent = <&intc>;
interrupts = <3>;
};