linux-kernel - [PATCH v2 2/6] arm64: dts: qcom: r0q: add gpio keys

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Message-ID: <20251014044135.177210-3-ghatto404@gmail.com>
Date: Tue, 14 Oct 2025 00:41:31 -0400
From: Eric Gonçalves <ghatto404@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/6] arm64: dts: qcom: r0q: add gpio keys

Add GPIO keys support to Samsung Galaxy S22 (r0q).

Signed-off-by: Eric Gonçalves <ghatto404@...il.com>
---
 .../boot/dts/qcom/sm8450-samsung-r0q.dts      | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
index a17dcb848fc1..5ca45b040a99 100644
--- a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
+++ b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
@@ -2,11 +2,13 @@
 
 /dts-v1/;
 
+#include <dt-bindings/input/linux-event-codes.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 
 #include "sm8450.dtsi"
 #include "pm8350.dtsi"
 #include "pm8350c.dtsi"
+#include "pmk8350.dtsi"
 
 / {
 	model = "Samsung Galaxy S22 5G";
@@ -28,6 +30,21 @@ framebuffer: framebuffer@...00000 {
 		};
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		autorepeat;
+
+		pinctrl-0 = <&vol_up_n>;
+		pinctrl-names = "default";
+
+		key-vol-up {
+			label = "Volume Up";
+			linux,code = <KEY_VOLUMEUP>;
+			gpios = <&pm8350_gpios 6 GPIO_ACTIVE_LOW>;
+			debounce-interval = <15>;
+		};
+	};
+
 	reserved-memory {
 		/*
 		 * The bootloader will only keep display hardware enabled
@@ -124,6 +141,25 @@ vreg_l1c_1p8: ldo1 {
 	};
 };
 
+&pm8350_gpios {
+	vol_up_n: vol-up-n-state {
+		pins = "gpio6";
+		function = "normal";
+		power-source = <1>;
+		input-enable;
+	};
+};
+
+&pon_pwrkey {
+	status = "okay";
+};
+
+&pon_resin {
+	linux,code = <KEY_VOLUMEDOWN>;
+
+	status = "okay";
+};
+
 &tlmm {
 	gpio-reserved-ranges = <36 4>; /* SPI (Unused) */
 };
-- 
2.51.0