A device tree binding documentation as well as a driver implementing support for the external interrupt lines on the ls1021a has been merged into irqchip-next, so will very likely appear in v5.5. See 87cd38dfd9e6 dt/bindings: Add bindings for Layerscape external irqs 0dcd9f872769 irqchip: Add support for Layerscape external interrupt lines present in next-20191114. These patches simply add the extirq node to the ls1021a.dtsi and make use of it on the LS1021A-TSN board. I hope these can be picked up so they also land in v5.5, so we don't have to wait a full extra release cycle. v2: fix interrupt type in 2/2 (s/IRQ_TYPE_EDGE_FALLING/IRQ_TYPE_LEVEL_LOW/). Rasmus Villemoes (1): ARM: dts: ls1021a: add node describing external interrupt lines Vladimir Oltean (1): ARM: dts: ls1021a-tsn: Use interrupts for the SGMII PHYs arch/arm/boot/dts/ls1021a-tsn.dts | 4 ++++ arch/arm/boot/dts/ls1021a.dtsi | 19 +++++++++++++++++++ 2 files changed, 23 insertions(+) -- 2.23.0