You can, or you can use the gpio_keys driver to nicely handle it in kernel space and give you key presses via the event subsystem. One small device tree snippet

You can, or you can use the gpio_keys driver to nicely handle it in kernel space and give you key presses via the event subsystem. One small device tree snippet, and you're sorted. There is even a gpio_keys_polled variant if you can't get interrupts from your GPIO controller.