From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 EC79A33B6E8 for ; Wed, 3 Jun 2026 14:36:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780497394; cv=none; b=LVJafMpnsUQkIn61OEpKUa1G3Cvy0iuLfckp0Z55rwETsP8EVTg2x83zW2UBiSoO30jJPlubqdW7RZvqyFqanvxPJQvCgOQHYjvrUNDF/bTOMdIxWJVFZAYe6osXpmJ+RPupU6RYrtOnWrL6XZ+s3Q7Xi6VfwBD5V4+H4KAX98w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780497394; c=relaxed/simple; bh=tDIvRBi+Hz2F+jOYLhGPWHuA2xQF223gSLOaxmQh3ps=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Rvi92l8xz1JpNDR0g/mrZAI1iC83N4XLb7t3oIHqiwk6SbY1ridTbmqEeGOOoMHr7iNa1OJSDOEiTIEh/otX75LWSGR1HX4oeoCpdnWRrxkUYpasAZaSWdwlXbtzoZh7GyzwqGCRxBvMzcrczVjkCAX5Rg5JTXD8GpsDXtMP6Ns= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UcfYuFsw; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UcfYuFsw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5472A1F00893; Wed, 3 Jun 2026 14:36:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780497393; bh=AI46kP8UK6l9WEk1AQ1AFIFgvTSBlPzimOI+GhKMfYM=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=UcfYuFswHKAWIOrbLOYdqwoYhRqsTDq4fDSvF2kb+f4bb+pJAfs16hBtXloG0cAP2 abbksORJdIvj3OPEL8XILi37eQ7zOO720EQYz20zT9y9iL44ZKX8DpQYiFx74z4YY7 bzbheKxr7R5wATCyqH0I8NUy4mp+d1+c9SPAcaMPnETFHZt0BhBk4ad2AX/PPgVaWA otwY14ogToUWG25fQQmtQ2UOQJNJNuI+Zu3gD28CN4aVU5vNDejdjx8e5eEtCmOoMu /nOTJRYtO5bQOAfQLUvX5yqaaTYHXZID/LNeUt/broeVJOujFTMZ+veR/Ho4FNrwJe Avfxi6Zz9OLcg== Message-ID: <035ffb31-e4c8-49b0-8323-f9cfe54eae30@kernel.org> Date: Wed, 3 Jun 2026 16:36:26 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 2/3] dt-bindings: i3c: dw: Add apb reset To: Jisheng Zhang Cc: Alexandre Belloni , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , linux-i3c@lists.infradead.org, devicetree@vger.kernel.org References: <20260525140018.19598-1-jszhang@kernel.org> <20260525140018.19598-3-jszhang@kernel.org> <4a8539d3-704b-4433-b4d6-e5acfe22d512@kernel.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 30/05/2026 14:58, Jisheng Zhang wrote: > On Wed, May 27, 2026 at 09:53:16AM +0200, Krzysztof Kozlowski wrote: >> On 27/05/2026 06:18, Jisheng Zhang wrote: >>> On Mon, May 25, 2026 at 05:25:45PM +0200, Krzysztof Kozlowski wrote: >>>> On 25/05/2026 16:00, Jisheng Zhang wrote: >>>>> Add dt-binding for support of apb reset which is to reset the APB >>>>> interface. >>>> >>>> And this is ABI break, so you must explain WHY breaking ABI is worth >>> >>> This just adds an optional apb reset, it doesn't break any exisiting >>> ABI. Kindly let me know whether adding new optional binding is also >>> an ABI break. >> >> It does. One reset was before. Now all devices must have two resets. >> Clear ABI impact. > > I checked the dts with only one reset by manual dt_binding_check > and dtbs_check, it still work, so I'm not sure why those dts "must have > two resets". Kindly let me know what's wrong. > >> >>> >>>> doing that or what is the impact. Additionally you should explain which >>>> devices have it. Does Altera have it? You really lack explanation WHY >>>> you are doing it and which hardware you exactly describe. >>> >>> I'm preparing one of synaptics SoCs support to uptream, it needs this >>> apb reset signal for i3c. So you mean I delay this series until the SoC >>> upstream series come, right? >> >> No. You just sent patch which basically says that Altera has two resets, >> without any explanation of that. > > I guess you mixed other series/patches with mine here, no? I didn't > mention Altera at all ;) What my series mentioned is adding apb reset > which is to reset the APB interface. > Read the binding. Altera is already there. I do not talk about other patches. Your are changing an already accepted binding. Best regards, Krzysztof