From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BBD0EE7BD8C for ; Mon, 16 Feb 2026 10:47:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=99nJyG38AdT6lfENG9BsH6/GyJNIEWjsDvdcblfA61g=; b=VeQ2KBHFtybQlcbFGdOgiLO2D2 NQlg1KnTrdLJXf5y/XUIpSLYCavO6Hg2Yp7BhEoaXio0tz20oLxB8UkUKkksnXm54Y05iONOglT7w hskO+hfFi2NbKFKEHvMjqHnO1ZpporxQkjMJxhTNpa/0jIjVPR4n669FyMQOz4NP15J6TT3B3lpq+ mgSAs8kPuYQQBR/O23ZnJQiYn+hg2eHrfKHK33c3ux0d00pgVwRAldbFUcpx/U9BpZfExamRB9lRv +e1d2dr/6dJoSzN37cyzJ9TM9zxODqMU2eCd12/HMyWP1FZsUrsh1k1PMjvo4uT7TTjX9JTeVVKrC 95mXraXg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vrw8A-00000006NZK-0tnq; Mon, 16 Feb 2026 10:47:06 +0000 Received: from bali.collaboradmins.com ([2a01:4f8:201:9162::2]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vrw87-00000006NYz-2axm for linux-mediatek@lists.infradead.org; Mon, 16 Feb 2026 10:47:05 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1771238820; bh=Zzin5ThTM9Imyf75zYHV+Tk+Fha+1QurOEuuq7ZkmWQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=fT7TaQ0C/ikyDEBGY2C7G+7P/fo4AtNST7bMbWiKDKrmMe+1gy65BjnWZ54PG1+SE qQDSOTWFjnImyYE30/10pcSWSECaBtFIDN0LThfDdpr7NZIokMjZMuyvPU8zmaaSNL lbcY1b1SCUMDf7J2pbOWZM4w0D9pY6Hrmk51j5J0UwJMFJN6i9XBLi53U9hrav2InY oNpaqeAVirbCTqX25CntkeQaRHqIQG9amW2BSA902jnQuRw/Mqf7F1w+KKplsPLVyx rwimIZmdoETkP7/bYVZG8mWBi8h1UqreKXMrbdVpCXMjdU/bYVzkTaxSAGTdsVX6Gp 5MZMdzkuSwsqA== 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) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 973AF17E1523; Mon, 16 Feb 2026 11:47:00 +0100 (CET) Message-ID: <86e2d0f9-5c25-4cce-b4a8-68fb569f987d@collabora.com> Date: Mon, 16 Feb 2026 11:46:59 +0100 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: Thorsten Leemhuis , Denis Gessert 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: <908f3c03-a8b0-4535-9cfa-294c6ade8152@collabora.com> <96e7f0fc-65f4-4613-b556-3a2d869dabb4@leemhuis.info> From: AngeloGioacchino Del Regno Content-Language: en-US In-Reply-To: <96e7f0fc-65f4-4613-b556-3a2d869dabb4@leemhuis.info> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260216_024703_879478_98A03859 X-CRM114-Status: GOOD ( 16.57 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Il 13/02/26 10:27, Thorsten Leemhuis ha scritto: > On 2/9/26 12:42, AngeloGioacchino Del Regno wrote: >> 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. >> >> 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!). > > Happens. :-D > >> Happy to see further confirmation that the patch that we both mentioned is >> actually fixing the issue. > > The big question remains: Now that this landed in mainline, should we as > the stable team to pick this up for 6.18.y and 6.19.y to get it resolved > there quickly? They might pick it up on their own due to the Fixes tag, > but that is not guaranteed. > Yes, please, that'd be great. Cheers, Angelo > Ciao, Thorsten > >>> 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 >> >> >> >