arm64: dts: renesas: r9a09g057h44-rzv2h-evk: Add NMI pushbutton support

RZ/V2H EVK has a user pushbutton connected to the SoC NMI pin, which
can be used to wake up the system from suspend to idle. Add a DT node
in the device tree to instantiate the gpio-keys driver for this button.

Signed-off-by: Ovidiu Panait <ovidiu.panait.rb@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251027140651.18367-1-ovidiu.panait.rb@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts
index 5c06bce3d5b4f006a97256c31a263a561e452169..c2f343ac6465b620069f25b53f1679b8b949583c 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts
@@ -9,6 +9,7 @@
 
 #include <dt-bindings/pinctrl/renesas,r9a09g057-pinctrl.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 #include "r9a09g057.dtsi"
 
 / {
@@ -34,6 +35,18 @@
                stdout-path = "serial0:115200n8";
        };
 
+       keys: keys {
+               compatible = "gpio-keys";
+
+               key-wakeup {
+                       interrupts-extended = <&icu 0 IRQ_TYPE_EDGE_FALLING>;
+                       linux,code = <KEY_WAKEUP>;
+                       label = "NMI_SW";
+                       debounce-interval = <20>;
+                       wakeup-source;
+               };
+       };
+
        memory@48000000 {
                device_type = "memory";
                /* first 128MB is reserved for secure area. */