From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (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 EEBB134A3D8 for ; Mon, 9 Feb 2026 11:42:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770637329; cv=none; b=anvLTp0+RnASSLweCO81LkAackMtYQuzpcE2cZHTGG+lYSM+IC6YwMkgNOaIpZnpYHkWZ5x07pcIUS3ipGgGgnffGSTKSPExS/SOb1N1j1AGQSUPeLBm3eDE1mHXy85dzyWvJJuMbPHxI7dop+gHzf0CnYxsaf8CiR+Yo/1BzEc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770637329; c=relaxed/simple; bh=UbLizSxhVVXAh/w7Ptx95cgdsgsfjuOy3Uoimq/uwnU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=MNih70t3o022Cnb0D1BD2pc3Oh3MEb3vj4fijC/Cm9Z2JhoBcRO5btSjZj1TqirphdRAGtsykoFgq3LNH4CABN2IVafy/8u6BG4BUa3om+v61JDoF1rhbHk7UZQN+bEGDHMVEDPbB3QzH3FseNKUo0M4pOfkxjlC679RXf+POZ0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=UJhaFLhY; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="UJhaFLhY" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1770637327; bh=UbLizSxhVVXAh/w7Ptx95cgdsgsfjuOy3Uoimq/uwnU=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=UJhaFLhY5cUPurgSiKNW+qV2sU1tqCeIBIPkRtaL8vF0snruWViLM+scsCLtPyu7P jsywKHmvHokuyJrp0JcYTVJ1jmqaIGTp9uHBzWWVlV+H6wQtNIM35vT9+nEBqAXOWc Tq4fHBjn9TjV+OF3uLFKxY/CtLI1iXEGVfEbrITZCSM2aAtAYZP/duPGrJFP+TytCb OQk4ww2pkpMjvpVcV4UF0ocLBWSOrM0VrG0E6aQJcrrUyaGXnnYGhZTDFqB2d9bQiC F9EQTYT2Vn2iLyIus99hnkPjpdnU3GFU1Z9oP4Ohd+Qa7XWZwuxNAFKDpQO9Uz6ixk KnU1PqhXcHxPg== Received: from [192.168.1.100] (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id ECBDD17E13D5; Mon, 9 Feb 2026 12:42:06 +0100 (CET) Message-ID: <908f3c03-a8b0-4535-9cfa-294c6ade8152@collabora.com> Date: Mon, 9 Feb 2026 12:42:06 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [REGRESSION] mt8183-kukui: dts: changes in dts caused display to no longer initialize - Was: Re: mt8183-kukui: drm/mediatek: dts: Invalid display hw pipeline when probing mediatek-drm To: Denis Gessert , Thorsten Leemhuis Cc: Evans Jahja , Matthias Brugger , linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, regressions@lists.linux.dev, =?UTF-8?Q?Otto_Pfl=C3=BCger?= References: From: AngeloGioacchino Del Regno Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Il 06/02/26 17:58, Denis Gessert ha scritto: > Thanks for the quick response. I compiled 6.18.9 with this patch > (without reverting the previous commit) and it boots successfully. > > Cheers, > Denis > Well, I missed all those replies to this thread, and sent a redundant reply saying .. well, the same as Thorsten (hey, thanks for being faster than me!). Happy to see further confirmation that the patch that we both mentioned is actually fixing the issue. Cheers! Angelo > Am Fr., 6. Feb. 2026 um 15:55 Uhr schrieb Thorsten Leemhuis > : >> >> On 2/6/26 12:33, Denis Gessert wrote: >>> >>> I found this email chain while troubleshooting why my Levovo Duet >>> (with the MT8183 chip) would not boot using any 6.18.* kernel. >>> >>> I can confirm that on my device the current stable 6.18.8 does not >>> boot unless I revert the commit >>> >>> commit e72d63fa0563f8a6e98c10fed3a9ce74dc0536e6 (HEAD) >>> Author: AngeloGioacchino Del Regno >>> Date: Thu Jul 24 10:39:08 2025 +0200 >>> >>> arm64: dts: mediatek: mt8183: Migrate to display controller OF graph >>> >>> mentioned below. With the reverted commit the device boots as intended. >> >> There is a fix for it from Otto here that I guess should help >> https://lore.kernel.org/lkml/20260106-mt8183-display-graph-v2-1-e7e56054eef5@abscue.de/ >> >> Side note: lacks a stable tag and maybe should have been merged this >> cycle instead of the next. But given that 6.19 is immanent it might be >> good if this could be backported to 6.19.y once it landed in mainline. >> >>> PS: Apologies for the potential double-mail. >> No worries, happens. >> >> Ciao, Thortsten