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 D551A1339A4; Sat, 20 Dec 2025 05:53:09 +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=1766209990; cv=none; b=CR7DFp+NRwLbzc1LaUHMASYyxoeZrS7x5lzqBMxIf4blX5e5SPjlSSy72JzEcckobk9BeisQT1bbUHMKh1SqO4TTNLHZ0qUhrqHKV8n6TbfTX7iysbolvgWpUfdAgYJnopSwT5b1c/IvdqbBMquG1k3ey5hwmJ5tmVgyp5TZ9do= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766209990; c=relaxed/simple; bh=yzcnx8V5iL0PoVqDyA0xiWyoLqVGZT95qqXiDASFiCY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=UMOvh3QDYhynaB6Y3Og3rAgU9unds/AlMhjV3BiUUSqG3ra/mXTjvqXRQNCBIq2xT5pGn1k8d1r4WcqEhSk1F4QHxy8YTksbH7rcai50qFortfnAF+hIl5/bkBAjHib1FP4zSy21+jy/of6I9FfPN/o8ZD+dUeWZ4sZ1XpsjItI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=i/ZOCOoy; 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="i/ZOCOoy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB0D9C4CEF5; Sat, 20 Dec 2025 05:53:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766209989; bh=yzcnx8V5iL0PoVqDyA0xiWyoLqVGZT95qqXiDASFiCY=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=i/ZOCOoyQR7Wq6Tft4CKtU2ceU2InluE0kD6Xefj/hzDNJedwSgWfBVnt+nY2Kbdv d3Hflg4atRLo3a5M6Ddmv+7tk6cutpBLQYlIUQp1GQW9EmqwQePOdPWyGMItqQtQfx iCa45bG3kRNjTSngXrdAHR9XM9v1M0GE66c1HeLXxca28woybj5iPhMrjCvB0RwsQp pEqQJZh0nnUDZFz2FPDIw+lX7IMJ+269+snkjzl5kjDHvPsF1jbwjSLg3zg6CIvwTi ZdbqguiQggoBxhSukX7XnVENyarFzoEC6tOwGEH3NITi0RDvqtL2G1DLk46SLfGWZY Zkd8mEwQdPv7A== Message-ID: <0337e0dd-d25c-4f22-968b-f1a3c364d025@kernel.org> Date: Sat, 20 Dec 2025 05:53:03 +0000 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/3] dt-bindings: media: camss: Add qcom,sm6350-camss To: Vladimir Zapolskiy , Bryan O'Donoghue , Luca Weiss , Robert Foss , Todor Tomov , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio Cc: ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20251114-sm6350-camss-v2-0-d1ff67da33b6@fairphone.com> <20251114-sm6350-camss-v2-1-d1ff67da33b6@fairphone.com> <272d039c-25a0-4db5-96a3-c28907882cd2@linaro.org> <2ae1a0a3-b105-4c0d-abbc-4b9d708b0272@linaro.org> From: Bryan O'Donoghue Content-Language: en-US In-Reply-To: <2ae1a0a3-b105-4c0d-abbc-4b9d708b0272@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 19/12/2025 16:18, Vladimir Zapolskiy wrote: > FreeBSD or CamX are software, and they shall be excluded from consideration. > > There shall be no guesses about software usage, the only concern is if > the hardware desription in the shape of device tree nodes is proper or not. > > Partial verifiable description is a proper description, and adding unknowns > of "future goodness" does not serve any reasonable technical purpose, it > adds an illusion of a proper description only, and it was proven that this > illision shatters even for CAMSS, see CAMSS CSIPHY case, when a wrong DT > choice can not be undone anymore for legacy platforms. It is good to acquire > an ability to learn from the past. > > Everything can be added ad-hoc while keeping the hardware description in > a proper and correct state. Are all of the VFE Lite's verified ? Even some of them ? I think not. We are seeing in multiple places how failure to properly articulate SIDs results in mess. So full description of the hardware > partial. BTW your statement about not being able to change DT bindings is wrong. You just need a good argument and to make that case successfully upstream. --- bod