Since commit 
ba751e28d442 ("net: dsa: mt7530: add interrupt support")
the mt7530 driver can act as an interrupt controller. Wire up irq line
of the MT7531 switch on the BananaPi BPi-R64 board, so the status of
the PHYs of the five 1000Base-T ports doesn't need to be polled any
more.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://lore.kernel.org/r/ZEA-DV_OsmFg5egL@makrotopia.org
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
 
                switch@0 {
                        compatible = "mediatek,mt7531";
                        reg = <0>;
+                       interrupt-controller;
+                       #interrupt-cells = <1>;
+                       interrupt-parent = <&pio>;
+                       interrupts = <53 IRQ_TYPE_LEVEL_HIGH>;
                        reset-gpios = <&pio 54 0>;
 
                        ports {