From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx3.wp.pl (mx3.wp.pl [212.77.101.9]) (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 0FF1B1E98E3 for ; Wed, 29 Apr 2026 15:35:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.77.101.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777476918; cv=none; b=fzKsDbJJakWbh1xr2cx72+tGO1ZCaxfB0xGLN5wKzay6OP+5uGGFgI8sOOpxa4wCHMU+6I5JSs6/JwZwwq/0dXh0h2l01WfRMw4kllrDT9izsPkQ3Pn1+5zy3ZeqvjAnGlb8MK7tCLP8/1Eh9g86DeFcMI0ho+cjSS+nWHuxIo4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777476918; c=relaxed/simple; bh=9le1ce9/QQsg3R4Ix6d8r0Smmm5dxlj7Sj5MC0zbZ1A=; h=From:To:Cc:Subject:Message-ID; b=KxBQBURpYsmQvCinADdWpd5rhu25z0dQM0hRjd5cWuOeIslbOGeV3GYz5SY4yacirxeHNNbRZfpivTP9NF2nHImvdGvITR070jyQDd3uwsqmkifoYn4hlPE7xfezNJJRhh6cl/gVfCaToan0k5tm61tGjJpLGh1Vt6yZc9R3NAo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wp.pl; spf=pass smtp.mailfrom=wp.pl; dkim=pass (2048-bit key) header.d=wp.pl header.i=@wp.pl header.b=HSl7Wbfh; arc=none smtp.client-ip=212.77.101.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wp.pl Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wp.pl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=wp.pl header.i=@wp.pl header.b="HSl7Wbfh" Received: (wp-smtpd smtp.wp.pl 45476 invoked from network); 29 Apr 2026 17:35:07 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wp.pl; s=20241105; t=1777476907; bh=Mm7UIET/CUAt65FbRFnd7WF49dyY5xMSzk3tBcZ2qbM=; h=From:To:Cc:Subject; b=HSl7WbfhIR9TcONaoZcJzcCHOEU9LQ5ntg1yCD+e1lZRC0q2If3cKE2+wrQfdmq3e 8gL2eE2AreufILrt1DpPmTwJn25EmsJdPtb/ATm5J2UYHfYLZqNq/RCnU2/xaOXEQb Sn0NFwToLruyac+6Zx9HBL8ldnyuuMB/2ntYFpGOhgOSjG8SZXC4hS/RaXSXyZBsx5 LTgSlOJMOFb1QVlMtocLyguP39e19pZeaIRQJ977+F4up5LYvWdp0/z3Afu4E7YXxW oOaI9b+LW9njxmbzc2EkMTZcAfihVQfxQ97XDxyKNNp1aNKdAzodqCpkqMIbLx5QRq 82PNCqB899ntg== Received: from host18560247242.static.ssm.silesia.pl (HELO report-kbd-backlight.txt) (adamszyma@wp.pl@[185.60.247.242]) (envelope-sender ) by smtp.wp.pl (WP-SMTPD) with TLS_AES_256_GCM_SHA384 encrypted SMTP for ; 29 Apr 2026 17:35:07 +0200 From: Adam Szyma To: val@packett.cool Cc: linux-arm-msm@vger.kernel.org Subject: Dell Inspiron 14 Plus 5441 - keyboard backlight and panel (x1e80100 Thena) X-WP-MailID: b95de355a68f63ce209270fe36fffd33 X-WP-AV: skaner antywirusowy Poczty Wirtualnej Polski X-WP-SPAM: NO 0000101 [sfLl] Message-ID: Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Hi Val, I have successfully installed Ubuntu 26.04 with kernel 7.0.0-32-qcom-x1e on a Dell Inspiron 14 Plus 5441 (x1e80100, codename Thena). The device uses the same x1-dell-thena.dtsi as the Inspiron 7441/Latitude 7455, but has two differences that need addressing: 1. KEYBOARD BACKLIGHT: The dell-xps-ec driver (dell,xps13-9345-ec) is present in the kernel but the DTS node for EC is missing from x1-dell-thena.dtsi. Keyboard: hid-over-i2c, vendor 0x6243, i2c-4 (b80000.i2c), address 0x05. Could you add the EC node to x1-dell-thena.dtsi to enable keyboard backlight on this device? 2. DISPLAY PANEL: The Inspiron 5441 uses a CSOT MPP36 T9 panel (CSW 0x143d, 1920x1200@60Hz) instead of the panel in the 7441. Brightness control is non-functional. I have already submitted a patch to dri-devel@lists.freedesktop.org: Subject: [PATCH] drm/panel/panel-edp: Add CSOT MPP36 T9 eDP panel Date: 2026-04-29, Message-ID: <20260429145251.8445-1-adamszyma@wp.pl> Hardware info: Model: Dell Inspiron 14 Plus 5441 SoC: Qualcomm X1E80100 (Snapdragon X Elite) Panel EDID: CSW 0x143d, MPP36 CSOT T9, 1920x1200@60Hz, 301x188mm Keyboard: HID over I2C, vendor 0x6243, product 0x0000 Tested-by: Adam Szyma Best regards, Adam Szyma