linux-kernel - [PATCH] arm64: dts: qcom: msm8916-longcheer-l8910: Add touchscreen

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Message-Id: <20250919-msm8916-l8910-touchscreen-v1-1-c46e56ec0a3b@gerhold.net>
Date: Fri, 19 Sep 2025 16:49:32 +0200
From: Stephan Gerhold <stephan@...hold.net>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Jonathan Albrieux <jonathan.albrieux@...il.com>, 
 Stephan Gerhold <stephan@...hold.net>
Subject: [PATCH] arm64: dts: qcom: msm8916-longcheer-l8910: Add touchscreen

From: Jonathan Albrieux <jonathan.albrieux@...il.com>

The BQ Aquaris X5 (Longcheer L8910) has a Himax HX852x-ES touchscreen,
which can now be described with the bindings recently added to linux-next.
Add it to the device tree to allow using the touchscreen.

Signed-off-by: Jonathan Albrieux <jonathan.albrieux@...il.com>
Co-developed-by: Stephan Gerhold <stephan@...hold.net>
Signed-off-by: Stephan Gerhold <stephan@...hold.net>
---
 .../boot/dts/qcom/msm8916-longcheer-l8910.dts      | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts
index 887764dc55b21a5892510f822004b054eb65fa0a..93d5ea279cff1eaf929d2bf0673e02819225d88a 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8910.dts
@@ -79,6 +79,19 @@ led-0 {
 		};
 	};
 
+	reg_ts_vcca: regulator-vcca-ts {
+		compatible = "regulator-fixed";
+		regulator-name = "regulator-vcca-ts";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 78 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&ts_vcca_default>;
+		pinctrl-names = "default";
+	};
+
 	usb_id: usb-id {
 		compatible = "linux,extcon-usb-gpio";
 		id-gpios = <&tlmm 110 GPIO_ACTIVE_HIGH>;
@@ -176,6 +189,25 @@ imu@68 {
 	};
 };
 
+&blsp_i2c5 {
+	status = "okay";
+
+	touchscreen@48 {
+		compatible = "himax,hx8527e", "himax,hx852es";
+		reg = <0x48>;
+
+		interrupts-extended = <&tlmm 13 IRQ_TYPE_LEVEL_LOW>;
+		reset-gpios = <&tlmm 12 GPIO_ACTIVE_LOW>;
+		vcca-supply = <&reg_ts_vcca>;
+		vccd-supply = <&pm8916_l6>;
+
+		pinctrl-0 = <&ts_int_reset_default>;
+		pinctrl-names = "default";
+
+		linux,keycodes = <KEY_BACK KEY_HOMEPAGE KEY_APPSELECT>;
+	};
+};
+
 &blsp_uart2 {
 	status = "okay";
 	pinctrl-0 = <&blsp_uart2_console_default>;
@@ -338,6 +370,20 @@ spk_ext_pa_default: spk-ext-pa-default-state {
 		bias-disable;
 	};
 
+	ts_int_reset_default: ts-int-reset-default-state {
+		pins = "gpio12", "gpio13";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	ts_vcca_default: ts-vcca-default-state {
+		pins = "gpio78";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	usb_id_default: usb-id-default-state {
 		pins = "gpio110";
 		function = "gpio";

---
base-commit: 8f7f8b1b3f4c613dd886f53f768f82816b41eaa3
change-id: 20250919-msm8916-l8910-touchscreen-7e45041b60dd

Best regards,
-- 
Stephan Gerhold <stephan@...hold.net>