From nobody Fri Sep 25 09:22:26 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 D01C043B4BC; Mon, 14 Sep 2026 22:04:27 +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=1789423467; cv=none; b=oqG8bNVoKbFG04ee9tTUXYvNZPOvyS5VEmix8M0kVBjhw6LjwhtWdGqMnA2WVW38SpjZ3Q43/PRxG/EfhcSPLalQI328SLAZmAPCoo3/dpaEJD7OkpjOLEkPpZ+2lGdQ+Rb1tpy8mXJ84l+biHRbR/d5xYq0jjkW42BUMvyMWA4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789423467; c=relaxed/simple; bh=7wq9k9Z+e/Jnq6UmymOYyQft/nBNfmVMtgWHxWu79Hk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id: In-Reply-To:References:To:Cc; b=IkvpTZYeDMN4ahTolYWMmb6N81XvUmaPMlyuAy39d+KcSEKD4sErB3xj0SxdtpoQqCp/K5Be2ooplOIhvHEU/ezE4EbupzQKLD8vEv/x6LHkmfhPp/qVDuglAZiOfwITWjCFxMDSL6LDzzhjP+sPI6VKuN2VlZKi0aAYKN8ODIw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rjB5XPh+; 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="rjB5XPh+" Received: by smtp.kernel.org (Postfix) with ESMTPS id 164D0C2BCB8; Mon, 14 Sep 2026 22:04:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1789423467; bh=7wq9k9Z+e/Jnq6UmymOYyQft/nBNfmVMtgWHxWu79Hk=; h=From:Date:Subject:In-Reply-To:References:To:Cc:Reply-To:From; b=rjB5XPh+XP6qiYrmut6P13Bu7ieCUb45Tn2VIANFbvC4U0be4iBH9a1X7K3IbQrKv RZvOgsdyx48zjTHntSTaVMPkSC8Ys6QkLLuFT9kgFKQz99UGEP7XDVL+7W0vgCNjaI v8Mwm7FdgS5n35kn5+pjY3kJsPlsouUYzoE6K7pJXzAAFLeRYlIA/BKOIphU60SC0i jcVVKtEjjjT7wB9GikXwbf3hw4Tapi2a3AS6s91QM/1wJCdhm8+u+XaLRU6K7j9VOV rblyo+kWG3Zo/6dGuvVBKAN6BCvTNCg252NMj0I+UNMFx/Xyx+jfpDIZcaLxv4rObz cAyVEbtldr6kg== 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 E1A40C88E77; Mon, 14 Sep 2026 22:04:26 +0000 (UTC) From: Avalon Vargas via B4 Relay Date: Mon, 14 Sep 2026 16:04:23 -0600 Subject: [PATCH v3] 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-v3-1-062d6b93d1ea@est.una.ac.cr> X-B4-Tracking: v=1; b=H4sIAAAAAAAC/42OQQ6CMBBFr0K6tqQtBcSV9zAu2mGQGiymU4iGc Hep7tzo8s38eX8WRhgcEjtkCws4O3Kj36DYZQx64y/IXbsxU0JVopGatzgMtdaSx3GCniAgel7 ZSglZ6L2xFdtO7wE793hrT+cP02SvCDG5UsIaQm6D8dCn0c1QxJAWvaM4huf7oVkmwY/uWXLJ2 7optQBT4l4ekWI+eZMbyCGw1D+rf0RqE9VdrZQGAYDlt2hd1xd8yIy3MAEAAA== X-Change-ID: 20260914-dell7441-touchscreen-6b6201348ab6 In-Reply-To: <20260914-dell7441-touchscreen-v2-1-7f7224c0cce5@est.una.ac.cr> References: <20260914-dell7441-touchscreen-v2-1-7f7224c0cce5@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 , Laurentiu Tudor , Konrad Dybcio X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1789423465; l=2783; i=avalon.vargas.centeno@est.una.ac.cr; s=avalon-una-20260914; h=from:subject:message-id; bh=v75HzOpWBajfOEjPLTpITjnQWejmIESrbq0Y0aBQQ9A=; b=6JsiynCVSClNZxDDovanJcVOxZuqP0EkykCbcmO6O0jomdmTCwsuoKM+iScQYWFLJ7r4XEGty iwFJVH5JddnB9rbu3s7O3rXeQO4qZCDZg/nLgd/ZFn+FFnoZymXm+Ju 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. Fixes: e7733b42111c ("arm64: dts: qcom: Add support for Dell Inspiron 7441 = / Latitude 7455") 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 v3: - Add the Fixes tag for the commit that introduced the incorrect address. - Link to v2: https://patch.msgid.link/20260914-dell7441-touchscreen-v2-1-7= f7224c0cce5@est.una.ac.cr 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 To: Laurentiu Tudor To: Bryan O'Donoghue To: Val Packett Cc: Konrad Dybcio 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 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 { }; =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