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

[Bryan O'Donoghue <bryan.odonoghue@linaro.org>]

On 14/09/2026 14:30, Avalon Vargas via B4 Relay wrote:
> From: Avalon Vargas <avalon.vargas.centeno@est.una.ac.cr>
> 
> 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. Touch input and suspend/resume
> have been verified on the affected Inspiron using Linux 7.2.4 with
> the equivalent device-tree overlay.
> 
> Signed-off-by: Avalon Vargas <avalon.vargas.centeno@est.una.ac.cr>
> ---
> 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
> ---
>   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 75e10d9..0cf5716 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>;
Nice.

A Fix should have a

Fixes: tag
Cc: stable@vger.kernel.org

---
bod