arm64: tegra: Add GPIO keys on P2771

The P2771 has three keys (power, volume up and volume down) that are
connected to pins on the AON GPIO controller.

Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts b/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts
index b80c1c3483db..9a1d02228652 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts
@@ -1,5 +1,7 @@
 /dts-v1/;
 
+#include <dt-bindings/input/linux-event-codes.h>
+
 #include "tegra186-p3310.dtsi"
 
 / {
@@ -13,6 +15,38 @@
                 vmmc-supply = <&vdd_sd>;
         };
 
+        gpio-keys {
+                compatible = "gpio-keys";
+
+                power {
+                        label = "Power";
+                        gpios = <&gpio_aon TEGRA_AON_GPIO(FF, 0)
+                                           GPIO_ACTIVE_LOW>;
+                        linux,input-type = <EV_KEY>;
+                        linux,code = <KEY_POWER>;
+                        debounce-interval = <10>;
+                        wakeup-source;
+                };
+
+                volume-up {
+                        label = "Volume Up";
+                        gpios = <&gpio_aon TEGRA_AON_GPIO(FF, 1)
+                                           GPIO_ACTIVE_LOW>;
+                        linux,input-type = <EV_KEY>;
+                        linux,code = <KEY_VOLUMEUP>;
+                        debounce-interval = <10>;
+                };
+
+                volume-down {
+                        label = "Volume Down";
+                        gpios = <&gpio_aon TEGRA_AON_GPIO(FF, 2)
+                                           GPIO_ACTIVE_LOW>;
+                        linux,input-type = <EV_KEY>;
+                        linux,code = <KEY_VOLUMEDOWN>;
+                        debounce-interval = <10>;
+                };
+        };
+
         regulators {
                 vdd_sd: regulator@100 {
                         compatible = "regulator-fixed";