git.rot13.org Git - linux-gpio-pinout/blob - device-tree/gpio-button.dts

   1 /dts-v1/;
   2 /plugin/;
   3
   4 / {
   5         compatible = "allwinner,sun4i-a10", "allwinner,sun7i-a20", "allwinner,sun50i-a64", "allwinner,sun50i-h5";
   6
   7         /*
   8          * This fragment is needed only for the internal pull-up activation,
   9          * external pull-up resistor is highly recommended if using long wires
  10          */
  11         fragment@0 {
  12                 target = <&pio>;
  13                 __overlay__ {
  14                         gpio_button_0: gpio_button_0 {
  15                                 pins = "PH3", "PH5";
  16                                 function = "gpio_in";
  17                                 bias-pull-up;
  18                         };
  19                 };
  20         };
  21
  22         fragment@1 {
  23                 target-path = "/";
  24                 __overlay__ {
  25                         gpio-keys-user {
  26                                 /*
  27                                  * Use "gpio-keys" for EINT capable pins, "gpio-keys-polled" for other pins
  28                                  * add "poll-interval" property if using "gpio-keys-polled"
  29                                  */
  30                                 compatible = "gpio-keys";
  31                                 pinctrl-names = "default";
  32                                 pinctrl-0 = <&gpio_button_0>;
  33
  34                                 up {
  35                                         label = "button-up";
  36                                         linux,code = <103>; /* KEY_UP, see include/uapi/linux/input-event-codes.h */
  37                                         gpios = <&pio 7 3 1>; /* PH3 GPIO_ACTIVE_LOW */
  38                                 };
  39
  40                                 down {
  41                                         label = "button-down";
  42                                         linux,code = <108>; /* KEY_DOWN, see include/uapi/linux/input-event-codes.h */
  43                                         gpios = <&pio 7 5 1>; /* PH5 GPIO_ACTIVE_LOW */
  44                                 };
  45                         };
  46                 };
  47         };
  48 };