arch/arm/boot/dts/overlays/wittypi-overlay.dts

   1 /*
   2  * Device Tree overlay for Witty Pi extension board by UUGear
   3  *
   4  */
   5
   6 /dts-v1/;
   7 /plugin/;
   8
   9 / {
  10
  11         compatible = "brcm,bcm2835";
  12
  13         fragment@0 {
  14                 target = <&leds>;
  15                 __overlay__ {
  16                         compatible = "gpio-leds";
  17                         wittypi_led: wittypi_led {
  18                                 label = "wittypi_led";
  19                                 linux,default-trigger = "default-on";
  20                                 gpios = <&gpio 17 0>;
  21                         };
  22                 };
  23         };
  24
  25         fragment@1 {
  26                 target = <&i2c1>;
  27                 __overlay__ {
  28                         #address-cells = <1>;
  29                         #size-cells = <0>;
  30
  31                         rtc: ds1337@68 {
  32                                 compatible = "dallas,ds1337";
  33                                 reg = <0x68>;
  34                                 wakeup-source;
  35                         };
  36                 };
  37         };
  38
  39         __overrides__ {
  40                 led_gpio =      <&wittypi_led>,"gpios:4";
  41                 led_trigger =   <&wittypi_led>,"linux,default-trigger";
  42         };
  43
  44 };