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