From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lj1-f173.google.com (mail-lj1-f173.google.com [209.85.208.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DF32C386C05 for ; Mon, 16 Mar 2026 09:28:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773653319; cv=none; b=n4YvXxqxBWcXclhgHLtyd1tc/DcSruZi1dk0wRxnORI/jTAbQ5jXYbGdjEn5eMn1u0eYkSOs4rc5jemRbsEeh0Xc75aIrfoneZ6PXfpMxve1E/Hgh6uTr1XWoticeH6l7Q5UdxP3rIZVGRwzD1yItKTFF/3dPHiDfHx/KXxilIo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773653319; c=relaxed/simple; bh=9c+Cpxp1ZGW3zXQamjYhD0iRzxH3nZLhn74BuWgaiP0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=sWKQgUA8U0BiTVzlkOqVQWfioA7SzSfRs1wI0TlhZeJlYWFBFSp2pyFN5WSTrNOtCFH5Jn27JM0H7Hmy7c7+GD+ij9ljxN3CR3ER1nVmXEAGeQWtA0QE4iAdLATKHtOiDwYtAk7QLIm4vF+P0gcn3F3el7ViO23cVUzMy+oMx54= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=OoJFiU2y; arc=none smtp.client-ip=209.85.208.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="OoJFiU2y" Received: by mail-lj1-f173.google.com with SMTP id 38308e7fff4ca-386c441ba1dso2061711fa.2 for ; Mon, 16 Mar 2026 02:28:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1773653316; x=1774258116; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:references:cc:to:subject :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=q75aoBy7Ji4mItPLv1quA/8WA+tC3Zlx81nywgbhn7w=; b=OoJFiU2ysS8xfggD0fZWt27gi04RkJ65YpHk68DkMbrZaoY/Qe4d0sYSjP1MhnuhDq ZMUs/kE+WHqd6M2JJ60C/zsLWKM8Kq7Fu+WIDYUCLZe4wBeptbu5+QqC5TIWUCmRyyqb ZUw8CCgqvsCv+NMeR2jC+o2TTkE4m1e68b0tDeDSFotv46XgJvYW1QMKjCjgt+IdA6IY zjeEtoO/bqdL+t2CIFlO8WadyBAW5p6UjE1VgMtyz42nzI3eVo5+IU7jXXXgC2neEaKY 7BzufaZ1Nxuc8gJ2NpwtpsDB0KlmqOWuutKvXMH7kAsr5iSGrW/Eonl/p5DNDtQwytnR 05Vw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773653316; x=1774258116; h=content-transfer-encoding:in-reply-to:from:references:cc:to:subject :user-agent:mime-version:date:message-id:x-gm-gg:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=q75aoBy7Ji4mItPLv1quA/8WA+tC3Zlx81nywgbhn7w=; b=WrSA3Y8VQHUatrAm0VT4KUJrES/phXuzbJhxzWqM8lcMhTT07HD+mueYDgKw4g+hnb RyXAusMWQtAkpOwV121f9kleQr6WNKHQ5UD9Bbl5IPPpF74PGkUxLPuwERHAvd/HViGU zoZYwzWg/KhRoIUfatLV4BFo/2fMfJKn1GXnkmZLMG0m2yDF7mdedZFlf0F4rrL5V907 KxOINhRx7rGY67DCm7ptZoM4STcShNREjv+cFVooXH9oGHsxF0ShWB5yOpNtiBVz4PN5 belnAibFtpAcIVTA0mDLF5LvI8NKh4yOJmldSL3gjoA79zrnbvqFztwetvmHmFO0bTyf beMQ== X-Forwarded-Encrypted: i=1; AJvYcCVkbOQeLa54EOo/JftT5xJQkvU6eerOvlDA+Mwp7xY90MJ2b1pZoyLsKmGW/niJgccVFWqtyuwHof5NQxE=@vger.kernel.org X-Gm-Message-State: AOJu0YxW9uiPgy43KCYOEjhqD2S86HBQucE7SpJOU4M03d8J8Dtli9li pfyVyUivy/J1KsX9bzIKI5ORCtBx1PnxlR4dnhE3d24JdjU0SjySuRuxlnQesd6SGRM= X-Gm-Gg: ATEYQzyQgx/fB2sosgyqqXTuF0jU4vHIqDVVipu/t4vIlmHluwX8bJ0d0HsT4nCvQLj 550RvoBhGB8pMHz7+jyVLQLdPNm+QGhtvtQnHGMu3VPN5UHvP3e9wI6b0Lgwl6TceUEY/s7g8Ag qtROyhUBt13EHYpPXudILXK+qijoGdUnp/LvhtFh51I3yRKEuV7xgIvvOnhiVzYvNZPac2ZJFvB IzN5alEZwkN25HyF1RKm09JdsujjRsgS8c6n+jwNJcbzPyZi4Oyc0NkwHIcwTJ71ocBYql2PxkD 9+dhVHP1cQVTQLj2mhYtEWyeH7b49vqxx1AOMQiCsRwlAqwVWeNaQ1jVdQuHrLRD9d0pTMgj0Uw yDkdvgcHnUEx+Tj0G6P/vE67wYMxAW4VgRh/Cu1NeoTaBAKrGKF50UsXv9WOgQEZsBCbhNH+Q1O OHs9pWYtD1QofRM78wMeBBOKwvAAylOEqwl8V/UTC80fID4O81TXoIfqjfDFbSskqFiVslY43Gt i31nA== X-Received: by 2002:a05:651c:211a:b0:384:9158:6bcd with SMTP id 38308e7fff4ca-38a896a443dmr21270251fa.2.1773653316000; Mon, 16 Mar 2026 02:28:36 -0700 (PDT) Received: from [192.168.1.100] (91-159-24-186.elisa-laajakaista.fi. [91.159.24.186]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-38a67d617e1sm31237711fa.9.2026.03.16.02.28.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Mar 2026 02:28:35 -0700 (PDT) Message-ID: <30f3ec22-c86d-4f05-b519-641fc2632c50@linaro.org> Date: Mon, 16 Mar 2026 11:28:34 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v10 1/7] dt-bindings: media: qcom,x1e80100-camss: Add simple-mfd compatible To: Dmitry Baryshkov Cc: Bryan O'Donoghue , Bjorn Andersson , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Robert Foss , Todor Tomov , Mauro Carvalho Chehab , Konrad Dybcio , Bryan O'Donoghue , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Krzysztof Kozlowski References: <20260316-b4-linux-next-25-03-13-dtsi-x1e80100-camss-v10-0-fdfe984fe941@linaro.org> <20260316-b4-linux-next-25-03-13-dtsi-x1e80100-camss-v10-1-fdfe984fe941@linaro.org> From: Vladimir Zapolskiy In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 3/16/26 04:39, Dmitry Baryshkov wrote: > On Mon, Mar 16, 2026 at 04:12:35AM +0200, Vladimir Zapolskiy wrote: >> On 3/16/26 03:02, Bryan O'Donoghue wrote: >>> Add "simple-mfd" as a second compatible string to allow child nodes >>> within the CAMSS block to probe as individual platform devices. >> >> Why are there any child nodes representing platform devices? >> >> There is no necessity of it, please use a layout similar to CAMSS CCI >> modelling. >> > > I'd say it differently. I think, putting CCI device outside of the CAMSS > node is a mistake. In the hardware all those devices are a part of the > separate block, they share the same NoC fabric, etc. > A simple-mfd model could be considered and pretty often it's usage makes great sense, but likely it's not the case here, when phys are childen of a factual CSI decoder. So far an umbrella/container device has not been considered to the best of my knowledge. OTOH I see no issue in placing phandles to the same exploited resources under multiple device tree nodes, the ultimate goal is to provide a proper hardware description. >>> >>> Signed-off-by: Bryan O'Donoghue >>> --- >>> Documentation/devicetree/bindings/media/qcom,x1e80100-camss.yaml | 8 ++++++-- >>> 1 file changed, 6 insertions(+), 2 deletions(-) >>> -- Best wishes, Vladimir