ARM: tegra: add power gpio keys to DT

This adds the power gpio key to DT and enable the wakeup of the gpio key
for the device. The Seaboard and paz00 already had the power gpio key
binding and the power key of Whistler was on KBC. So these boards' device
tree didn't include in this patch.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

3 files changed, 33 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/tegra20-harmony.dts b/arch/arm/boot/dts/tegra20-harmony.dts
index 2c4da874eb16..d86dd85c4c4e 100644
--- a/arch/arm/boot/dts/tegra20-harmony.dts
+++ b/arch/arm/boot/dts/tegra20-harmony.dts
@@ -464,6 +464,17 @@
                 };
         };
 
+        gpio-keys {
+                compatible = "gpio-keys";
+
+                power {
+                        label = "Power";
+                        gpios = <&gpio 170 1>; /* gpio PV2, active low */
+                        linux,code = <116>; /* KEY_POWER */
+                        gpio-key,wakeup;
+                };
+        };
+
         kbc {
                 status = "okay";
                 nvidia,debounce-delay-ms = <2>;
diff --git a/arch/arm/boot/dts/tegra20-trimslice.dts b/arch/arm/boot/dts/tegra20-trimslice.dts
index 51b3a44fc063..f96870c4bdac 100644
--- a/arch/arm/boot/dts/tegra20-trimslice.dts
+++ b/arch/arm/boot/dts/tegra20-trimslice.dts
@@ -343,6 +343,17 @@
                 };
         };
 
+        gpio-keys {
+                compatible = "gpio-keys";
+
+                power {
+                        label = "Power";
+                        gpios = <&gpio 190 1>; /* gpio PX6, active low */
+                        linux,code = <116>; /* KEY_POWER */
+                        gpio-key,wakeup;
+                };
+        };
+
         poweroff {
                 compatible = "gpio-poweroff";
                 gpios = <&gpio 191 1>; /* gpio PX7, active low */
diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index 7095e96d0142..5688d9f367fd 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts
@@ -544,6 +544,17 @@
                 };
         };
 
+        gpio-keys {
+                compatible = "gpio-keys";
+
+                power {
+                        label = "Power";
+                        gpios = <&gpio 170 1>; /* gpio PV2, active low */
+                        linux,code = <116>; /* KEY_POWER */
+                        gpio-key,wakeup;
+                };
+        };
+
         regulators {
                 compatible = "simple-bus";
                 #address-cells = <1>;