Hi Lisheng, this patch got a bit mangled but I get where you're going.
I think Meson needs to be augmented to use hierarchical gpiolib irqchip because this seems to be what the system is doing. So start with drivers/pinctrl/meson/Kconfig and add: select GPIOLIB_IRQCHIP select IRQ_DOMAIN_HIEARARCHY Then use the generic hierarchical gpiolib irqchip as described in Documentation/driver-api/gpio/driver.rst Type git grep child_to_parent_hwirq for several examples of how to do this. Yours, Linus Walleij
