[PATCH v3] arm64: dts: qcom: Fix touchscreen address on Dell Inspiron 7441

[Avalon Vargas via B4 Relay]

From: Avalon Vargas <avalon.vargas.centeno@xxxxxxxxxxxxx>

The LXST2021 touchscreen on the tested Dell Inspiron 14 Plus 7441
responds at I2C address 0x09, while the device tree specifies 0x10.
Probing the latter fails with -ENXIO and no touchscreen input device
is registered.

Use address 0x09, matching the LXST2021 configuration on the related
Dell Latitude 7455. With this address, the controller identifies as
29BD:1103 and binds to hid-multitouch.

Fixes: e7733b42111c ("arm64: dts: qcom: Add support for Dell Inspiron 7441 / Latitude 7455")
Signed-off-by: Avalon Vargas <avalon.vargas.centeno@xxxxxxxxxxxxx>
---
This replaces the earlier report-plus-diff with a patch submission.
Only one unit has been tested. I have no evidence of double-sourcing
or a working Inspiron touchscreen at 0x10; a typo remains possible.

touch input and suspend/resume. The native upstream patch has not yet
undergone a full kernel DTB build or dtbs_check.

Validation: Linux 7.2.4 plus the equivalent local DT overlay, physical
---
Changes in v3:
- Add the Fixes tag for the commit that introduced the incorrect address.
- Link to v2: https://patch.msgid.link/20260914-dell7441-touchscreen-v2-1-7f7224c0cce5@xxxxxxxxxxxxx

Changes in v2:
- Drop the testing details from the commit message as requested.
- Link to v1: https://patch.msgid.link/20260914-dell7441-touchscreen-v1-1-d79540ca5e81@xxxxxxxxxxxxx

To: Bjorn Andersson <andersson@xxxxxxxxxx>
To: Konrad Dybcio <konradybcio@xxxxxxxxxx>
To: Rob Herring <robh@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
To: Laurentiu Tudor <laurentiu.tudor1@xxxxxxxx>
To: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
To: Val Packett <val@xxxxxxxxxxxx>
Cc: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 arch/arm64/boot/dts/qcom/x1e80100-dell-inspiron-14-plus-7441.dts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-dell-inspiron-14-plus-7441.dts b/arch/arm64/boot/dts/qcom/x1e80100-dell-inspiron-14-plus-7441.dts
index 75e10d97c..0cf5716cd 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-dell-inspiron-14-plus-7441.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-dell-inspiron-14-plus-7441.dts
@@ -25,9 +25,10 @@ &gpu_zap_shader {
 };
 
 &i2c8 {
-	touchscreen@10 {
+	/* LXST2021 */
+	touchscreen@9 {
 		compatible = "hid-over-i2c";
-		reg = <0x10>;
+		reg = <0x09>;
 
 		hid-descr-addr = <0x1>;
 		interrupts-extended = <&tlmm 51 IRQ_TYPE_LEVEL_LOW>;

---
base-commit: 704340f1cd0dcef829eb62f5b48ae95a2ce17bdf
change-id: 20260914-dell7441-touchscreen-6b6201348ab6

Best regards,
--  
Avalon Vargas <avalon.vargas.centeno@xxxxxxxxxxxxx>