arch/arm/boot/dts/bcm2835-rpi-b.dts

   1 /dts-v1/;
   2 /include/ "bcm2835-rpi.dtsi"
   3
   4 / {
   5         compatible = "raspberrypi,model-b", "brcm,bcm2835";
   6         model = "Raspberry Pi Model B";
   7
   8         leds {
   9                 act {
  10                         gpios = <&gpio 16 1>;
  11                 };
  12         };
  13 };
  14
  15 &gpio {
  16         pinctrl-0 = <&gpioout &alt0 &i2s_alt2 &alt3>;
  17
  18         /* I2S interface */
  19         i2s_alt2: i2s_alt2 {
  20                 brcm,pins = <28 29 30 31>;
  21                 brcm,function = <6>; /* alt2 */
  22         };
  23 };