WhyCan Forum(哇酷开发者社区)

       gpio_keys {
               compatible = "gpio-keys-polled";
               pinctrl-names = "default";
/*               pinctrl-0 = <&key_pins>;*/
               #address-cells = <1>;
               #size-cells = <0>;
               poll-interval = <20>;



               button@0 {
                        label = "GPIO Key Up";
                        linux,code = <KEY_UP>;
                        gpios = <&pio 7 1 GPIO_ACTIVE_LOW>; /* PH1 */
               };
               button@1 {
                        label = "GPIO Key Enter";
                        linux,code = <KEY_ENTER>;
                        gpios = <&pio 7 8 GPIO_ACTIVE_LOW>; /* PH8 */
               };

               button@2 {
                        label = "GPIO Key Down";
                        linux = <KEY_DOWN>;
                        gpios = <&pio 7 7 GPIO_ACTIVE_LOW>; /* PH7 */
               };

       };