ARM: tegra: Enable power key on Venice2

Contrary to the rest of the keyboard, which is connected to the ChromeOS
embedded controller, the power key is hooked up to a GPIO. Add a device
tree node to handle it.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/tegra124-venice2.dts b/arch/arm/boot/dts/tegra124-venice2.dts
index ab7ca65301e5..c6dcef513e5d 100644
--- a/arch/arm/boot/dts/tegra124-venice2.dts
+++ b/arch/arm/boot/dts/tegra124-venice2.dts
@@ -954,6 +954,18 @@
                 };
         };
 
+        gpio-keys {
+                compatible = "gpio-keys";
+
+                power {
+                        label = "Power";
+                        gpios = <&gpio TEGRA_GPIO(Q, 0) GPIO_ACTIVE_LOW>;
+                        linux,code = <KEY_POWER>;
+                        debounce-interval = <10>;
+                        gpio-key,wakeup;
+                };
+        };
+
         regulators {
                 compatible = "simple-bus";
                 #address-cells = <1>;