ARM: dts: bcm2835: make the firmware node into a bus

This allows adding devices for which the firmware exposes control interface
via the mailbox. An example of such device is the GPIO expander.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index e36c392a2b8fdfe36dab81b0128e85dfd422ab7b..0198bd46ef7cd228d99f83e7b80c2f455b0f5f33 100644 (file)
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -18,7 +18,9 @@
 
        soc {
                firmware: firmware {
-                       compatible = "raspberrypi,bcm2835-firmware";
+                       compatible = "raspberrypi,bcm2835-firmware", "simple-bus";
+                       #address-cells = <0>;
+                       #size-cells = <0>;
                        mboxes = <&mailbox>;
                };