/dts-v1/;
-/include/ "bcm2835-rpi.dtsi"
+#include "bcm2835-rpi.dtsi"
 
 / {
        compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
        /* I2S interface */
        i2s_alt0: i2s_alt0 {
                brcm,pins = <18 19 20 21>;
-               brcm,function = <4>; /* alt0 */
+               brcm,function = <BCM2835_FSEL_ALT0>;
        };
 };
 
 /dts-v1/;
-/include/ "bcm2835-rpi.dtsi"
+#include "bcm2835-rpi.dtsi"
 
 / {
        compatible = "raspberrypi,model-b", "brcm,bcm2835";
        /* I2S interface */
        i2s_alt2: i2s_alt2 {
                brcm,pins = <28 29 30 31>;
-               brcm,function = <6>; /* alt2 */
+               brcm,function = <BCM2835_FSEL_ALT2>;
        };
 };
 
-/include/ "bcm2835.dtsi"
+#include "bcm2835.dtsi"
 
 / {
        memory {
 
        gpioout: gpioout {
                brcm,pins = <6>;
-               brcm,function = <1>; /* GPIO out */
+               brcm,function = <BCM2835_FSEL_GPIO_OUT>;
        };
 
        alt0: alt0 {
                brcm,pins = <0 1 2 3 4 5 7 8 9 10 11 14 15 40 45>;
-               brcm,function = <4>; /* alt0 */
+               brcm,function = <BCM2835_FSEL_ALT0>;
        };
 
        alt3: alt3 {
                brcm,pins = <48 49 50 51 52 53>;
-               brcm,function = <7>; /* alt3 */
+               brcm,function = <BCM2835_FSEL_ALT3>;
        };
 };
 
 
-/include/ "skeleton.dtsi"
+#include <dt-bindings/pinctrl/bcm2835.h>
+#include "skeleton.dtsi"
 
 / {
        compatible = "brcm,bcm2835";