--- /dev/null
+From 1d8a5891026bb0c8202a62174377b0e8b34a96e2 Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Wed, 14 Sep 2016 09:18:09 +0100
+Subject: [PATCH] raspberrypi-firmware: Define the MBOX channel in the header.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ include/soc/bcm2835/raspberrypi-firmware.h | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -12,6 +12,8 @@
+ #include <linux/types.h>
+ #include <linux/of_device.h>
+
++#define RPI_FIRMWARE_CHAN_FB 1
++
+ struct rpi_firmware;
+
+ enum rpi_firmware_property_status {