foo.patch

diff --git a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
index 3a91a8b..3ac572a 100644
--- a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
+++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
@@ -68,6 +68,18 @@
                #size-cells = <0>;
                spi-max-frequency = <500000>;
        };
+
+    at86rf233@0 {
+        compatible = "atmel,at86rf233";
+        reg = <0>;
+        interrupts = <23 4>;
+        interrupt-parent = <&gpio>;
+        reset-gpio = <&gpio 24 1>;
+        sleep-gpio = <&gpio 25 1>;
+        spi-max-frequency = <3000000>;
+        xtal-trim = /bits/ 8 <0x0F>;
+    };
+
 };
 
 &i2c0 {