[PATCH edk2-platforms v4 33/34] Platform/DeveloperBox: add description of power button to DT

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

Add the power button as a gpio-keys KEY_POWER button, and mark it as
a wakeup source so it can be used under the OS both as a 'sleep' and
as a 'wake' button.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 Silicon/Socionext/SynQuacer/DeviceTree/DeveloperBox.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Silicon/Socionext/SynQuacer/DeviceTree/DeveloperBox.dts b/Silicon/Socionext/SynQuacer/DeviceTree/DeveloperBox.dts
index 6ae7d5f300b6..d2cd7ef90e6f 100644
--- a/Silicon/Socionext/SynQuacer/DeviceTree/DeveloperBox.dts
+++ b/Silicon/Socionext/SynQuacer/DeviceTree/DeveloperBox.dts
@@ -15,9 +15,23 @@
 
 #include "SynQuacer.dtsi"
 
+#define KEY_POWER     116
+
 / {
     model = "Socionext Developer Box";
     compatible = "socionext,developer-box", "socionext,synquacer";
+
+    gpio-keys {
+        compatible = "gpio-keys";
+        interrupt-parent = <&exiu>;
+
+        power {
+            label = "Power Button";
+            linux,code = <KEY_POWER>;
+            interrupts = <GIC_SPI 120 IRQ_TYPE_EDGE_FALLING>;
+            wakeup-source;
+        };
+    };
 };
 
 &gpio {
-- 
2.11.0