arm: mvebu: add button for OpenBlocks AX3-4

The OpenBlocks AX3-4 board has one software-controlled button on the
front side, labeled "INIT", so we add minimal support for this button
in the kernel.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
index b42652fd3d8c373f5ef14bcd3695e38799bcd1cc..ec368643e4786b5cd47b41dd482875db9da194bf 100644 (file)
--- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
+++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
@@ -66,6 +66,18 @@
                        };
                };
 
+               gpio_keys {
+                       compatible = "gpio-keys";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       button@1 {
+                               label = "Init Button";
+                               linux,code = <116>;
+                               gpios = <&gpio1 28 0>;
+                       };
+               };
+
                mdio {
                        phy0: ethernet-phy@0 {
                                reg = <0>;