From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx.nabladev.com (mx.nabladev.com [178.251.229.89]) (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 7DB452BE02D; Fri, 28 Aug 2026 01:21:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.251.229.89 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787880104; cv=none; b=N5GUn3fW5u1PKrhggdyi4HtPBnyMItip6DCpaFZHLJrK67CKyq0tc3M5FpowtP/jOssm7z1CXnn/yB/EJKKGvQg909etvrn1TDRzZjMNHS4Lt7Sjnzazn/BhWN9SHpUGPtw7voL3AHj9+i4/qlOTHav6ZUjosaqcwe4AXdJ7csk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787880104; c=relaxed/simple; bh=aIckynKWDUzQUw0mQ6DliNym+pfa5mWNQiS7sM/h+ng=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ToVRk6Ud2PiVvojI/mjVIRu7I92fTTAGtKtQXhah8jgzq87UYPf17tFoyyGcO9DdLQJf/96GhaB+5R0m/tIkqtD9xUBxB/vt+xoYCR53eECSsPJXGUYBLZUbx2dZD9jHV5vOy9pqlXgM0XHjX1OjAxX3meWIl2K+oTKdDIJmdlc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nabladev.com; spf=pass smtp.mailfrom=nabladev.com; dkim=pass (2048-bit key) header.d=nabladev.com header.i=@nabladev.com header.b=UO87sDGL; arc=none smtp.client-ip=178.251.229.89 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nabladev.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nabladev.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=nabladev.com header.i=@nabladev.com header.b="UO87sDGL" Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 1D07811D0C5; Fri, 28 Aug 2026 03:21:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nabladev.com; s=dkim; t=1787880096; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:content-language:in-reply-to:references; bh=cmYwe1UVmG+P6y8XZ0jgJInhQsv9JOJ7agmlWn6XZjI=; b=UO87sDGL3sBebpYqbD84s1YbNO4v7eideJxNY6dAzQ6IOvkH76bWtZG9ZkbU/+bUSwVzNt Jko19H/EExvQs6ppzLw0S0m0jmTbw4d1Cye00HzCjVIUJL36mQGcX7aZuKts88CMXbyn5s MpFmTPw2O9lWMM9KPFJHdcMR9GwDleVcEofgmGINwuD4uDVbUnrnnbp5ZYGGU+EF6zc8O2 1tFLtU1LP/xwfHIuDWc56Pe4jsYycG8BWnh5IMszwMWREgXFFKhWimYSytyHGNF73OUNWo rGRuxTcenwER1IUlcXJ4bsjZ1++zCCDNR9D5qvNZkn8Y+J7gOtV0IcZuxtZGrw== Message-ID: <202b1b0d-5ccd-4fcf-bc7b-bc013dd84774@nabladev.com> Date: Fri, 28 Aug 2026 03:03:03 +0200 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 7/9] dt-bindings: arm: stm32: Switch st,stm32mp23/25-syscfg into simple-mfd To: Krzysztof Kozlowski Cc: linux-usb@vger.kernel.org, fabrice.gasnier@foss.st.com, Alexandre Torgue , Christian Bruel , Conor Dooley , Greg Kroah-Hartman , Krzysztof Kozlowski , Maxime Coquelin , Neil Armstrong , Pankaj Dev , Rahul Kumar , Rob Herring , Rosen Penev , Thinh Nguyen , Vinod Koul , devicetree@vger.kernel.org, kernel@dh-electronics.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com References: <20260822074816.548662-1-marex@nabladev.com> <20260822074816.548662-8-marex@nabladev.com> <20260827-skilled-optimal-shellfish-c548e5@quoll> <9b197208-dbb4-44dd-b0c0-b4dcaa57c403@nabladev.com> <3264c2d2-4c53-44c0-8164-d2d83f75c175@kernel.org> Content-Language: en-US From: Marek Vasut In-Reply-To: <3264c2d2-4c53-44c0-8164-d2d83f75c175@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Last-TLS-Session-Version: TLSv1.3 On 8/27/26 11:35 PM, Krzysztof Kozlowski wrote: > On 27/08/2026 17:04, Marek Vasut wrote: >> On 8/27/26 3:07 PM, Krzysztof Kozlowski wrote: >>> >>> OTOH2, you have now patchset dependency which is nowwhere explained. >>> Merging constraints are the most important part of cover letter so must >>> be clearly stated. IMO, should be stated also here, because many >>> maintainers do not read cover letters. Or just decouple dependencies >>> with using 'compatibles' pattern (see Qualcomm msm/mdss display >>> bindings). >> I wonder, wouldn't it be better to write a driver which binds to >> st,stm32mp25-syscfg , handles the SYSCFG clock, and does some >> of_platform_populate() to bring up the PHYs (DT subnodes) ? >> >> I think that would resolve the ABI break problem, since we wouldn't need >> the simple-mfd compatible anymore. And it would also correctly handle >> the SYSCFG clock. >> >> What do you think ? > > Yes, it is better and more flexible approach. Solves ABI impact. All right, let's do that.