arm64: tegra: Enable power and volume keys on Jetson TX1

Add a gpio-keys device tree node to represent the Power, Volume Up and
Volume Down keys found on Jetson TX1.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
index c662404..a2480c0 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
@@ -1,3 +1,5 @@
+#include <dt-bindings/input/input.h>
+
 / {
        model = "NVIDIA Tegra210 P2597 I/O board";
        compatible = "nvidia,p2597", "nvidia,tegra210";
@@ -1267,4 +1269,28 @@
 
                cd-gpios = <&gpio TEGRA_GPIO(Z, 1) GPIO_ACTIVE_LOW>;
        };
+
+       gpio-keys {
+               compatible = "gpio-keys";
+               label = "gpio-keys";
+
+               power {
+                       label = "Power";
+                       gpios = <&gpio TEGRA_GPIO(X, 5) GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_POWER>;
+                       wakeup-source;
+               };
+
+               volume_down {
+                       label = "Volume Down";
+                       gpios = <&gpio TEGRA_GPIO(Y, 0) GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_VOLUMEDOWN>;
+               };
+
+               volume_up {
+                       label = "Volume Up";
+                       gpios = <&gpio TEGRA_GPIO(X, 6) GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_VOLUMEUP>;
+               };
+       };
 };