From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Tue, 25 Nov 2025 22:45:33 +0000 (+0000)
Subject: arm64: dts: renesas: r9a09g056n48-rzv2n-evk: Add NMI wakeup button support
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=41e60d92c88c0085511b38077dad2939bf63ddfc;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: renesas: r9a09g056n48-rzv2n-evk: Add NMI wakeup button support

Add support for the NMI connected user pushbutton on the RZ/V2N EVK.
The button is wired to the SoC NMI input and can be used to wake the
system from low-power states.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251125224533.294235-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

diff --git a/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts
index 89154875bb33d..9af50198d2f11 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts
@@ -8,6 +8,7 @@
 /dts-v1/;
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 #include "r9a09g056.dtsi"
 
 / {
@@ -44,6 +45,18 @@
 		};
 	};
 
+	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. */