07:12 <afaerber> xdarklight, I need to specify an interrupts property for nxp,sc16is752 i2c-uart bridge, thus I need an interrupt-controller node

09:35 <xdarklight> afaerber: hmm, it should work with &gpio_intc IRQ number 8. I would also see what gpio_get_value gives to rule out that something's wrong with the PCB

09:45 <afaerber> xdarklight, https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt appears to have a typo in the compatible line and does not explain how the 256 pads map to actual GPIO banks - where did you get the index 8 for GPIOAO_8 from?

09:49 <xdarklight> afaerber: S905X datasheet page 94 or pinctrl-meson-gxl.c (meson_gxl_aobus_banks has irq fields which go from 0 to 9 - that's linear for GPIOAO_0 to GPIOAO_9)