59.使用设备树描述中断

查看底板触摸屏的原理找到中断gpio

编写设备树

/dts-v1/;

/include/ "dt-bindings/pinctrl/rockchip.h"
/include/ "dt-bindings/interrupt-controller/irq.h"

/ {
    model = "this is my test devicetree!";
    ft5x06@38 {
        compatible = "edt,edt-ft5206";
        interrupt-parent = <&gpio0>;
        interrupts = <RK_PB5 IRQ_TYPE_EDGE_FALLING>;
    };
};

compatible对应drivers/input/touchscreen/edt-ft5x06.c

gpio0对应arch/arm64/boot/dts/rockchip/rk356x-base.dtsi

RK_PB5对应include/dt-bindings/pinctrl/rockchip.h

IRQ_TYPE_EDGE_FALLING对应include/dt-bindings/interrupt-controller/irq.h