The Realtek SMI family is a set of DSA chips that provide
switching in routers. This binding just follows the pattern
set by other switches but with the introduction of an embedded
irqchip to demux and handle the interrupts fired by the single
line from the chip.
This interrupt construction is sim
> +Examples:
> +
> +switch {
> + compatible = "realtek,rtl8366rb";
> + /* 22 = MDIO (has input reads), 21 = MDC (clock, output only) */
> + mdc-gpios = <&gpio0 21 GPIO_ACTIVE_HIGH>;
> + mdio-gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>;
> + reset-gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
> +
