1*4882a593SmuzhiyunDevice-Tree bindings for GPIO attached mice 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunThis simply uses standard GPIO handles to define a simple mouse connected 4*4882a593Smuzhiyunto 5-7 GPIO lines. 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunRequired properties: 7*4882a593Smuzhiyun - compatible: must be "gpio-mouse" 8*4882a593Smuzhiyun - scan-interval-ms: The scanning interval in milliseconds 9*4882a593Smuzhiyun - up-gpios: GPIO line phandle to the line indicating "up" 10*4882a593Smuzhiyun - down-gpios: GPIO line phandle to the line indicating "down" 11*4882a593Smuzhiyun - left-gpios: GPIO line phandle to the line indicating "left" 12*4882a593Smuzhiyun - right-gpios: GPIO line phandle to the line indicating "right" 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunOptional properties: 15*4882a593Smuzhiyun - button-left-gpios: GPIO line handle to the left mouse button 16*4882a593Smuzhiyun - button-middle-gpios: GPIO line handle to the middle mouse button 17*4882a593Smuzhiyun - button-right-gpios: GPIO line handle to the right mouse button 18*4882a593SmuzhiyunExample: 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun#include <dt-bindings/gpio/gpio.h> 21*4882a593Smuzhiyun 22*4882a593Smuzhiyungpio-mouse { 23*4882a593Smuzhiyun compatible = "gpio-mouse"; 24*4882a593Smuzhiyun scan-interval-ms = <50>; 25*4882a593Smuzhiyun up-gpios = <&gpio0 0 GPIO_ACTIVE_LOW>; 26*4882a593Smuzhiyun down-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>; 27*4882a593Smuzhiyun left-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>; 28*4882a593Smuzhiyun right-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>; 29*4882a593Smuzhiyun button-left-gpios = <&gpio0 4 GPIO_ACTIVE_LOW>; 30*4882a593Smuzhiyun button-middle-gpios = <&gpio0 5 GPIO_ACTIVE_LOW>; 31*4882a593Smuzhiyun button-right-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>; 32*4882a593Smuzhiyun}; 33