huawei-mrd-kernel/Documentation/devicetree/bindings/mfd/qriox.txt

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KEYMILE qrio Board Control CPLD
The qrio is a multifunction device that controls the KEYMILE boards based on
the kmp204x design.
It is consists of a reset controller, watchdog timer, LEDs, and 2 IRQ capable
GPIO blocks.
Required properties:
- compatible: "keymile,qriox"
- reg: access on the parent local bus (chip select, offset in chip select, size)
Example:
board-control@1,0 {
compatible = "keymile,qriox";
reg = <1 0 0x80>;
};