On Sat, 14 Nov 2020 17:04:06 +0100 Marek Behún <kabel@xxxxxxxxxx> wrote: > + interrupt-parent = <&pcawan>; > + interrupt = <7 IRQ_TYPE_LEVEL_LOW>; Also we need to use IRQ_TYPE_EDGE_FALLING. The gpio-pca953x driver does not support IRQ_TYPE_LEVEL_LOW...