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 976903D987; Thu, 9 Oct 2025 01:04:36 +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=1759971876; cv=none; b=Liqh7PzqUdXj+TajA0lEXlLkRULPHoywX4f4Xhwr3jhWwG3LLxAzQTwu+qpm589loAfEd1gpZMwBFOQyig+Z5W7jQ+uNVRKATQe2gzWHYOxh+OL1b6eRIKfxiEJw0XkC9k0A9wXOfmolKAg0PG+/+x6hwKztZTqHCvl31gJ2QDE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759971876; c=relaxed/simple; bh=vmKpklX7s829t63sBLzCDRLIqN2vG9RpogG762iSHcg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ojwq4xuD8TEmCaexidhRoHC4b5P9uqPsHQHZOPVSN3vG3DOCHdO9QTxQIfaqi6RTSj5jMYpHC+4CILkW+QwG/y3huioPb/mEXuYOcRZRPl7ISNOqyeHmFscNlk69+wltWECbi0V8yzVi7OFECx5f4GzIyspurPdqAcnWib0hZ98= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KgEld5bz; 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="KgEld5bz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 97443C4CEE7; Thu, 9 Oct 2025 01:04:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1759971876; bh=vmKpklX7s829t63sBLzCDRLIqN2vG9RpogG762iSHcg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=KgEld5bzkK5+gYk5w8JSRxNWT/2MRAK5juC/0uJ9vzeMfpxtcoFUko1FUyB241gVY dFTIFmCkdlA1V0DlnDFTUF/E6GA41cnJ5/rsotLyOB1MExy/6TLt09G5MwV5ZlhX// ZtujYyOYDpxDA45Yq3xB/tzUToXmkK8AANIy807W/KtWp8bnrD6+D3pjZbVEqWnG8v 5TWce1neSHoEJ+74eC1vvsfwOAI7IooWUYFyYDM6ps9tlcXaQrn2Xq5VlPyeb00zAC QgxCNCMFwF9G1Rdr7ghvGKGFMKWStE/OPx3v2XjjS9x3nxGHDVFwHaYpS77eTcyNcw KAzl/59uFbpGw== Message-ID: <5085c857-f6e8-4faf-b61a-a9ee562ccf06@kernel.org> Date: Thu, 9 Oct 2025 10:04:24 +0900 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 v3 0/5] Introduce "non-pixel" sub node within iris video node To: Bryan O'Donoghue , Bryan O'Donoghue , Charan Teja Kalla , Bryan O'Donoghue , Dmitry Baryshkov Cc: Konrad Dybcio , Vikash Garodia , Dikshita Agarwal , Abhinav Kumar , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <7b6db4fa-2f73-376d-4eb3-64c1c7e6cda3@quicinc.com> <4a32bbec-2baf-4210-a7c1-1ddcd45d30c8@oss.qualcomm.com> <4d87d1ca-55b2-426e-aa73-e3fd8c6fe7bd@kernel.org> <10a8ccda-4e27-4b06-9a0e-608d6ade5354@nxsw.ie> <4cb4a92d-2f20-47c7-881e-aadcc6f83aa0@kernel.org> <1516f21e-aee3-42cf-b75e-61142dc9578d@oss.qualcomm.com> <9bae595a-597e-46e6-8eb2-44424fe21db6@linaro.org> <98e6acf8-80d7-4894-b4ce-ce74660722ef@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 09/10/2025 09:55, Bryan O'Donoghue wrote: > On 09/10/2025 01:47, Krzysztof Kozlowski wrote: >>> Maybe it would be possible to also use an inferred FUNCTION_ID somehow >>> though TBH I think that's a work-around. >> Three months ago I gave you the answer for that - it is inferred by >> index on the list. > > But at least as I understand it, you can have multiple SID entries that > need to map to a FUNCTION_ID which means you need to encode that > inferred indexing in your driver. Yes. > > So you can't have the iommu code just know what to do.. it has to be > driver specific. Yes. > > The iommu description for this platform basically lacks the data that > _should_ be there -> FUNCTION_ID. No. The index tells that already. > > The rule is that the DT should really describe the hardware right ? It already does. Same as I wrote on IRC, DT already has all the information. Entry 0 has function ID-foo. Entry 1 has function ID-bar. Entry 2 has function ID-bar or whatever. Best regards, Krzysztof