linux-kernel - [PATCH] arm64: dts: qcom: milos-fairphone-fp6: Add Hall Effect sensor

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Message-Id: <20260116-fp6-hall-sensor-v1-1-69275c6bd809@fairphone.com>
Date: Fri, 16 Jan 2026 15:22:52 +0100
From: Luca Weiss <luca.weiss@...rphone.com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Luca Weiss <luca.weiss@...rphone.com>
Subject: [PATCH] arm64: dts: qcom: milos-fairphone-fp6: Add Hall Effect
 sensor

Add a node for the Hall Effect sensor, used to detect whether the Flip
Cover is closed or not.

The sensor is powered through vreg_l10b, so let's put a
regulator-always-on on that to make sure the sensor gets power.

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 arch/arm64/boot/dts/qcom/milos-fairphone-fp6.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/milos-fairphone-fp6.dts b/arch/arm64/boot/dts/qcom/milos-fairphone-fp6.dts
index 7629ceddde2a..98b3fc654206 100644
--- a/arch/arm64/boot/dts/qcom/milos-fairphone-fp6.dts
+++ b/arch/arm64/boot/dts/qcom/milos-fairphone-fp6.dts
@@ -32,6 +32,16 @@ gpio-keys {
 		pinctrl-0 = <&volume_up_default>;
 		pinctrl-names = "default";
 
+		/* Powered by the always-on vreg_l10b */
+		event-hall-sensor {
+			label = "Hall Effect Sensor";
+			gpios = <&tlmm 70 GPIO_ACTIVE_LOW>;
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_LID>;
+			linux,can-disable;
+			wakeup-source;
+		};
+
 		key-volume-up {
 			label = "Volume Up";
 			gpios = <&pm7550_gpios 6 GPIO_ACTIVE_LOW>;
@@ -316,6 +326,8 @@ vreg_l10b: ldo10 {
 			regulator-min-microvolt = <1800000>;
 			regulator-max-microvolt = <1800000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+			/* Hall sensor VDD */
+			regulator-always-on;
 		};
 
 		vreg_l11b: ldo11 {

---
base-commit: ef1c7b875741bef0ff37ae8ab8a9aaf407dc141c
change-id: 20260116-fp6-hall-sensor-1049f2f872ac

Best regards,
-- 
Luca Weiss <luca.weiss@...rphone.com>