From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 498252E36F8; Wed, 23 Jul 2025 06:22:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753251732; cv=none; b=Dj2WHi/iVrvNJ5XdUiNGPdonsvX6Z7XWjb06ixs0YJ0p7I7zt9U5ba/nD79+uTm9GZmYhpIiVLc4/94YlXHW56qTCmvIfRESCiaXwktv9uuRKKPYGvVu0FaFdXVS+NxiaQMEUZVVFsgpn7CQkn10ULaAo9LWRFC2HWxzN0G18SI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753251732; c=relaxed/simple; bh=tC8t7P9ZlvilCDjK7g37E/tE/OkcI3nesYZLYkuvIH4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=GqW+yAK/Fov/iHWXJTBs0diaCMLiuGzZwlqSl17ZwjcFS7uJj0IRRYtcRROY+PyeUkOmI/HDEc2EcIdaC5HD42UkVGWJ9qvBZY7nCiy1AMBOZqweYlbUbwA0MBUTSJn05TUC1ja1OIInkQvFUdzfF5fQF7A2VsJ8jSYbkfvFEhE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=itr274h6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="itr274h6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 12959C4CEE7; Wed, 23 Jul 2025 06:22:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753251731; bh=tC8t7P9ZlvilCDjK7g37E/tE/OkcI3nesYZLYkuvIH4=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=itr274h6X8bS3b1L2hF37DF+oNT/1t+IZBLXJ11FZRQIXjtAOo6VqDarmEjYp2fE/ ng368IzkrySjNAKaPS+FRZ1ngF1bzHPzp8tXlGn9zeKd1UFgFVAOi0/GxNCC5CD+ke MvJdGT0vtxLhskt9bZ2XuECEKaqDeA/3FW7g3rkmlJhALSLC6yfRiuMHofWNPtWZaO byhjhcZhNcFdaZNACLuPOoDhQfseCbUs6LWm29gY/eItJKmdMU80c9cu+9G8Pbp9Dq 5o7S4ZW3599BVzH2x9P5mCRdRNdOKRWBT1BSkeZsFcKHfRem89Jbz90gEihBJApR3a HAGjarSgI6/Xg== Message-ID: <3515f1dd-bed2-4f54-97fb-194850440e14@kernel.org> Date: Wed, 23 Jul 2025 08:22:07 +0200 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/3] dt-bindings: i2c: realtek,rtl9301-i2c: extend for RTL9310 support To: Jonas Jelonek Cc: linux-i2c@vger.kernel.org, Chris Packham , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Markus Stockhausen References: <20250712194255.7022-1-jelonek.jonas@gmail.com> <20250712194255.7022-3-jelonek.jonas@gmail.com> <20250714-magnificent-powerful-nuthatch-afcc01@krzk-bin> <0a2a0fa6-ee82-40be-b62d-847a4ef04626@gmail.com> <7b0c1f38-51f9-46a7-8e38-1fbeb189133c@gmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 22/07/2025 20:25, Jonas Jelonek wrote: >>> Since you have a lot of expertise on that and I obviously fail to find >>> documentation that helps me to do that properly, could you give me some hints >>> on how that has to look? I'd really appreciate this. >> >> So in your if:then: block where you narrow mst-id, you add on same level >> as properties: >> >> patternProperties: >> YOUR_REGEX: false > > How I thought of narrowing that in the first place was to make mst-id required > for RTL9310 but optional for RTL9300. In terms of describing the hardware, this > is valid for RTL9300 too (but there's no need for the driver or anything else to > know that). > > But I don't mind if you'd rather have it only defined in the 'then' block, or > just disallowed for RTL9300, effectively forbidding the usage for RTL9300. > > Either way, it seems I'm still doing it wrong with the regex. Adding as you > suggested: > > if: >     properties: >         compatible: >             contains: >                 const: realtek,rtl9301-i2c > then: >     patternProperties: >         '^i2c@([0-9]|1[0-1])$': false > > breaks validation of the RTL9300 example. Probably I don't see how this > is expected to look like in a working state. RTL9300 has 8 controllers, so why are you disallowing them? We talk here only about new stuff. Why would you change EXISTING behavior when adding something new? You need pattern matching redundant children for existing device. Best regards, Krzysztof