From nobody Fri Sep 25 09:21:17 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AD31947DD59; Mon, 14 Sep 2026 14:19:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789395558; cv=none; b=AWxqnONe2+UEFXhIJ7D9TavvFUaNh+m63fuhqrV+6dcp5K6D2ePX9Jlq8iPGKg8C9K/bDrbOmHg/2CyY5/Ek9/EWj9id9TKxsENnDi57t8IIfhHIKNSFOTHg+a5atfIjk/Z+BDPzeHXa9Y7l0cKsEwOhw89NeTR5SQhjbywdyeA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789395558; c=relaxed/simple; bh=fKyld9t6D/FMJyIZs8tLQZezDPQ3bZZpyrpcFezMKXo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id: In-Reply-To:References:To:Cc; b=ob9GU/mOND9EDGCvl4+G+XJvmv/UY9RNIRF4xacWluhfJ9GPMqkJtzboNzGGX2mxvOczhGVygldhO3jnZvB3PNNsnDFhEOqRraC+cok+tUrl0N9PvytLfhC4xx7IbCk/ZxY11FowlNZzOSA8olqCbKIJ52J0MKqrWtesnqGNAks= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=b4HRqQr5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="b4HRqQr5" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2837AC2BCB8; Mon, 14 Sep 2026 14:19:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1789395558; bh=fKyld9t6D/FMJyIZs8tLQZezDPQ3bZZpyrpcFezMKXo=; h=From:Date:Subject:In-Reply-To:References:To:Cc:Reply-To:From; b=b4HRqQr5dnfbWzKQC9koLO2TXDaTa8LAvDcIRaVR2nzCExWTodohylpw6ORBxUVqZ R1ljAi8UoN+EnhTiNAxAh3rPWJPfK0iVOPRKPsgTrAeYA1dT6XknSUY9vG5rtpu9Vs RIyrrEQb0uGa4C6biF3T5Hi1lIQOXxCnS2XvfF2qFgMVJ0NUNqJQ4SBtK25FIKhtde vlutklImIjj+i8JVaKw3cfoZtCzFLE8fVYF6sRWUkskBGWI7PuJDLZIYOk9JjsOObP S7kJPXcUdoYEYQw5jPdZmqhbZ54Xf/njk8FR6pnrYVnKeKGKFqyYgsvIsZwYv6UFRU d7hZkphHiFSqg== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id BFBBCC88E73; Mon, 14 Sep 2026 14:19:17 +0000 (UTC) From: Avalon Vargas via B4 Relay Date: Mon, 14 Sep 2026 08:19:12 -0600 Subject: [PATCH v2] arm64: dts: qcom: Fix touchscreen address on Dell Inspiron 7441 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260914-dell7441-touchscreen-v2-1-7f7224c0cce5@est.una.ac.cr> X-B4-Tracking: v=1; b=H4sIAAAAAAAC/4WOQQ6CMBBFr0K6tqStpaAr72FYTMsoNVhMpxAN4 e5SPIDL92fm/VkYYfRI7FwsLOLsyY9hA3UomOsh3JH7bmOmhDLiJDXvcBhqrSVP4+R6chExcGO NEvKoG7CGbaeviDf/3rXX9sc02Qe6lF15wwIhtxGC63P0BEoY86D3lMb42R+aZRb86Z4ll7yrT 5UWDips5AUplVOAElzpImvXdf0CiCOKQecAAAA= X-Change-ID: 20260914-dell7441-touchscreen-6b6201348ab6 In-Reply-To: <20260914-dell7441-touchscreen-v1-1-d79540ca5e81@est.una.ac.cr> References: <20260914-dell7441-touchscreen-v1-1-d79540ca5e81@est.una.ac.cr> To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Val Packett , Bryan O'Donoghue , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Avalon Vargas X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1789395556; l=2302; i=avalon.vargas.centeno@est.una.ac.cr; s=avalon-una-20260914; h=from:subject:message-id; bh=6gBsV7jPIMZCPp+JlhmXPksh2uvU1i6L1e9XqSDCAiw=; b=ZYH8yQrfacLkBtsncjtGdW8vXgGgPM/evxGnTyhkeXzbHgAKY/9UTIj1I0W1UN3ejqHJIVqHR F8PySNTN4CFBhYR11IRgw1vhN6xRakWDEwqcTGHwkKCQlkME7BDLwbf X-Developer-Key: i=avalon.vargas.centeno@est.una.ac.cr; a=ed25519; pk=I7FZ301yhA9Jl2LReBEqv+9LUrd5zi397CIT2gTB6RE= X-Endpoint-Received: by B4 Relay for avalon.vargas.centeno@est.una.ac.cr/avalon-una-20260914 with auth_id=1032 X-Original-From: Avalon Vargas Reply-To: avalon.vargas.centeno@est.una.ac.cr From: Avalon Vargas 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. Signed-off-by: Avalon Vargas --- 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 v2: - Drop the testing details from the commit message as requested. - Link to v1: https://patch.msgid.link/20260914-dell7441-touchscreen-v1-1-d= 79540ca5e81@est.una.ac.cr To: Bjorn Andersson To: Konrad Dybcio To: Rob Herring To: Krzysztof Kozlowski To: Conor Dooley Cc: linux-arm-msm@vger.kernel.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- 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.d= ts 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 { }; =20 &i2c8 { - touchscreen@10 { + /* LXST2021 */ + touchscreen@9 { compatible =3D "hid-over-i2c"; - reg =3D <0x10>; + reg =3D <0x09>; =20 hid-descr-addr =3D <0x1>; interrupts-extended =3D <&tlmm 51 IRQ_TYPE_LEVEL_LOW>; --- base-commit: 704340f1cd0dcef829eb62f5b48ae95a2ce17bdf change-id: 20260914-dell7441-touchscreen-6b6201348ab6 Best regards, -- =20 Avalon Vargas