From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (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 6D95F26280A; Tue, 12 Aug 2025 10:34:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754994864; cv=none; b=mGOmZv0LKMJowPukDdBF+gCO+lp4+v/1eWrxDrzu333QwhCUzcIpNT8eRkv6LhAo9YY3afHUrwkhnH7uFORk2qdGEZHVE2QtcYfL14b3FuG3O3SIjqWUHR9IyBH9iUk/ZrXpYidSYJsVwcNL4juDFG5RocUR6pXtk3tMhxvRtkc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754994864; c=relaxed/simple; bh=RLlBPkLSMf3OJL1sJFW0PiPmShGT8FqE5hfDx/LurWU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=tdBFr0d2Ah3+sK0T51wHno1bRU0n/arYWfJ94xG95F4NfjUo3D1s9k1XnfiidHl42YIpqLG71K5Ad7940RMDyGDcSTY64WZwl0x+mIAYsXwSjb0DN+vMB4DO2M6O7PDtY6OoeJ2GKZr3Wf3YWcTfdveOXTuFSJCPvYUiFJsqNPs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=o6aSnZkv; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="o6aSnZkv" Received: from pendragon.ideasonboard.com (81-175-209-231.bb.dnainternet.fi [81.175.209.231]) by perceval.ideasonboard.com (Postfix) with UTF8SMTPSA id 45A993D5; Tue, 12 Aug 2025 12:33:28 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1754994808; bh=RLlBPkLSMf3OJL1sJFW0PiPmShGT8FqE5hfDx/LurWU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=o6aSnZkvJr88RQyX3OVgFVepD3fc4NN8QjXDA23EQdESLE3IddnuxG8HM5Bx+xwCD 3Obg9G3JalNe/PMgflvAezVCuAcOWqeG7MNXaxwuaoWWXQdGXsX7VYG0hatN/myr5c fCTcuM7AutvNPltnINnDqgiZY90OFIX3qUvcWcoA= Date: Tue, 12 Aug 2025 13:34:03 +0300 From: Laurent Pinchart To: Krzysztof Kozlowski Cc: Bjorn Andersson , linux-media@vger.kernel.org, Sakari Ailus , Mehdi Djait , Alim Akhtar , =?utf-8?B?QW5kcsOp?= Apitzsch , Andrzej Hajda , Arec Kao , Benjamin Mugnier , Bingbu Cao , Bryan O'Donoghue , Bryan O'Donoghue , Conor Dooley , Daniel Scally , Dongcheng Yan , Dongchun Zhu , Fabio Estevam , Geert Uytterhoeven , Hans de Goede , Hans Verkuil , Hao Yao , Heimir Thor Sverrisson , Jacopo Mondi , Jason Chen , Jimmy Su , Jingjing Xiong , Jonas Karlman , Konrad Dybcio , Krzysztof Kozlowski , Lad Prabhakar , Leon Luo , Liam Girdwood , Magnus Damm , Manivannan Sadhasivam , Mark Brown , Matthew Majewski , Matthias Fend , Mikhail Rudenko , Nicolas Dufresne , Niklas =?utf-8?Q?S=C3=B6derlund?= , Pavel Machek , Pengutronix Kernel Team , Ricardo Ribalda , Rob Herring , Sascha Hauer , Shawn Guo , Shunqian Zheng , Sylvain Petinot , Sylwester Nawrocki , Tarang Raval , Tianshu Qiu , Todor Tomov , Tomi Valkeinen , Tony Lindgren , Zhi Mao , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-samsung-soc@vger.kernel.org Subject: Re: (subset) [PATCH 00/72] media: i2c: Reduce cargo-cult Message-ID: <20250812103403.GL30054@pendragon.ideasonboard.com> References: <20250710174808.5361-1-laurent.pinchart@ideasonboard.com> <175495482477.157244.17354544707184168458.b4-ty@kernel.org> <20250812085112.GH30054@pendragon.ideasonboard.com> <20250812093915.GI30054@pendragon.ideasonboard.com> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On Tue, Aug 12, 2025 at 12:28:28PM +0200, Krzysztof Kozlowski wrote: > On 12/08/2025 11:39, Laurent Pinchart wrote: > >>>> > >>>> [12/72] arm64: dts: qcom: sdm845-db845c-navigation-mezzanine: Replace clock-frequency in camera sensor node > >>>> commit: 5433560caa5e7e677a8d4310bbec08312be765b4 > >>> > >>> I'm afraid that's too soon. This will introduce a breakage without a > >>> corresponding change to the camera sensor driver. > >>> > >>> I will post a v2 with the patches reordered. We could merge the V4L2 > >>> side in a rc1-based stable branch and merge than in the arm-soc tree as > >> > >> You cannot ("cannot" as not following the process) merge drivers into > >> DTS branch. > > > > Ah, I wasn't aware of that. DTS trees don't allow merging stable > > branches shared with other subsystems ? Does it mean that a DTS change > > Not with driver subsystems. Why? Because it breaks encapsulation of > hardware description being entirely independent of given Linux driver > implementation. > > BTW, it is already documented in maintainer-soc in ABI stability (I will > fix "devicetree" ambiguity to DTS) and driver branch dependencies. > > > that depends on a driver change always need to be delayed by one kernel > > version ? > > This is one solution, although as I mentioned later it still affects all > other users of DTS, so it has its own drawbacks. > > Other solution is to keep both properties for more than one cycle. OK. There's no urgency to merge the .dts changes, so I think delaying them by one kernel release is the simplest option. > >>> well, but I think we can also delay the .dts changes to the next kernel > >> > >> All users of DTS will be anyway affected and commit msg should address that. > > > > Which commit message, the one for the driver changes or the one for the > > DTS changes ? I plan in the next version to indicate that the DT changes > > depend on the driver changes. > > DTS changes, so the soc maintainers can judge whether they care about > other DTS users or they do not. Thank you for the clarification. I will do that. -- Regards, Laurent Pinchart