[PATCH v3] arm64: dts: qcom: x1-denali: Add volume up/down GPIO keys

[Dale Whinham <daleyo@gmail.com>]

Configure gpio6 and gpio8 as volume up and volume down respectively, to
enable the volume rocker located at the top of the screen.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Signed-off-by: Dale Whinham <daleyo@gmail.com>
---
Note: the DTS coding style says properties within a group shall use
natural sort order by name, which for the new pin state nodes would give
bias-pull-up, function, input-enable, pins, power-source. I've instead
led with pins and function, matching every other pin configuration group
in the x1* device trees. Happy to switch to the strict natural sort if
that's preferred.
---
Changes in v3:
- Sort the child nodes of gpio-keys alphabetically by name, and re-order
  the pinctrl-0 entries to match (Konrad, DTS style guide).
- Re-order the properties within the new pin state nodes to lead with
  pins and function, matching the other x1* pin state nodes.
- Link to v2: https://patch.msgid.link/20260902-surface-pro-11-volume-buttons-v2-1-1d893c7b5440@gmail.com

Changes in v2:
- Sort the new pin configuration nodes by controller and GPIO number (Konrad)
- Link to v1: https://patch.msgid.link/20260829-surface-pro-11-volume-buttons-v1-1-ace589343a68@gmail.com

To: Bjorn Andersson <andersson@kernel.org>
To: Konrad Dybcio <konradybcio@kernel.org>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi | 36 ++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi b/arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi
index 7559557610ed..c14a1b9b1130 100644
--- a/arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi
@@ -20,9 +20,27 @@ aliases {
 	gpio-keys {
 		compatible = "gpio-keys";
 
-		pinctrl-0 = <&hall_int_n_default>;
+		pinctrl-0 = <&vol_down_n>, <&vol_up_n>, <&hall_int_n_default>;
 		pinctrl-names = "default";
 
+		key-vol-down {
+			debounce-interval = <15>;
+			gpios = <&pm8550_gpios 8 GPIO_ACTIVE_LOW>;
+			label = "Volume Down";
+			linux,can-disable;
+			linux,code = <KEY_VOLUMEDOWN>;
+			wakeup-source;
+		};
+
+		key-vol-up {
+			debounce-interval = <15>;
+			gpios = <&pm8550_gpios 6 GPIO_ACTIVE_LOW>;
+			label = "Volume Up";
+			linux,can-disable;
+			linux,code = <KEY_VOLUMEUP>;
+			wakeup-source;
+		};
+
 		switch-lid {
 			gpios = <&tlmm 2 GPIO_ACTIVE_LOW>;
 			linux,input-type = <EV_SW>;
@@ -984,6 +1002,22 @@ &pcie6a_port0 {
 };
 
 &pm8550_gpios {
+	vol_up_n: vol-up-n-state {
+		pins = "gpio6";
+		function = "normal";
+		bias-pull-up;
+		input-enable;
+		power-source = <1>; /* 1.8V */
+	};
+
+	vol_down_n: vol-down-n-state {
+		pins = "gpio8";
+		function = "normal";
+		bias-pull-up;
+		input-enable;
+		power-source = <1>; /* 1.8V */
+	};
+
 	rtmr0_default: rtmr0-reset-n-active-state {
 		pins = "gpio10";
 		function = "normal";

---
base-commit: 8d3ae59288f1e7d58d76558a6ee96d533bc5019f
change-id: 20260829-surface-pro-11-volume-buttons-f4b40e25cecb

Best regards,
--  
Dale Whinham <daleyo@gmail.com>