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 2FE0015C158; Mon, 25 Aug 2025 12:25:32 +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=1756124733; cv=none; b=TKfKgU3Ht2Ex5iXWZLJiRaaf9brOegvMNrL4zo8PFt713YSkr/WEnutl3lDPGH1cRmjxvqDHPMibnlk99YSGlqF8y422Nht/CAqvaxsmq6xifdcNnnodjKba2hWBZoG/Awj+ABa0Bl5v0VgTWyyMgtLWBaj02zKIWjMzXuFs4nE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756124733; c=relaxed/simple; bh=W6KAjfj0R9bEnh4eOzH132K/jM70TLLRtAAfEhO3BxE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Jmi+1Xccl6L/92eITKqKIDSFshT3YXG4Tv6Bt9UqYc7QlgqKXUXBSHJ/rKFUtGmd6B3YXBokiy1Srr73plDOyT2eBkQg7lcYtBMqZf/uTXAjf7sbHKJQNu8voKzI0EttTmAtl2d/5eXtkbhXnUNDG3vthlFnteDJN9AKrii/fkc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Asfoj6rb; 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="Asfoj6rb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 75274C4CEED; Mon, 25 Aug 2025 12:25:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756124732; bh=W6KAjfj0R9bEnh4eOzH132K/jM70TLLRtAAfEhO3BxE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Asfoj6rbaAAOTguC5bHlA9ugMlnQPu7UAGYwBGi8mE6DcqSGpyNQIF76dRrhA7ySM 9dGam5c4pdpfz1LqFYXqq2wwbJRs7bwjAfgH5FWktF/TG9ZLq88YGLv3XOPrtBVO0v TzGnQexh2EfFAXDJKKyTb6n8aT5DfToK3HPWzuVy9PjZPbvm11hMoipclBitDNJ8zZ C8GBljqGS2ekeZFwPcpS2ls9DNxkzkv8zBSdWOpOArakFXuVY2zo0QAcrTnV0p0BWa Op2fwmJ5K3U+To9QCKE83xrNp41ATik+k0bnt6v14BQuYji5LW8b/ZzpSnDnTGCMIp LpZRv0yKs7b/Q== Message-ID: <66799067-faac-4fe7-9114-4797b93d03c7@kernel.org> Date: Mon, 25 Aug 2025 14:25:24 +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 v2 10/12] dt-bindings: media: fsd: Document CSIS DMA controller To: Inbaraj E , mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, s.nawrocki@samsung.com, s.hauer@pengutronix.de, shawnguo@kernel.org, cw00.choi@samsung.com, rmfrfs@gmail.com, laurent.pinchart@ideasonboard.com, martink@posteo.de, mchehab@kernel.org, linux-fsd@tesla.com, will@kernel.org, catalin.marinas@arm.com, pankaj.dubey@samsung.com, shradha.t@samsung.com, ravi.patel@samsung.com Cc: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, alim.akhtar@samsung.com, linux-samsung-soc@vger.kernel.org, kernel@puri.sm, kernel@pengutronix.de, festevam@gmail.com, linux-media@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org References: <20250814140943.22531-1-inbaraj.e@samsung.com> <20250814140943.22531-11-inbaraj.e@samsung.com> <00e201dc13d7$17d2a750$4777f5f0$@samsung.com> <2eaa1303-79e6-431e-9902-356862357c9f@kernel.org> <015a01dc15b8$1095f0e0$31c1d2a0$@samsung.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 25/08/2025 14:01, Inbaraj E wrote: > Hi Krzysztof, > >>> According to the HW design of FSD SoC, the control to manage CSIS >>> power is given to a separate CPU where custom firmware runs. >>> Therefore. The Linux side does not control the CSIS power supplies directly >> and are hence not included in the device tree. >> >> Usually this still means you vote for enabling these resources, at least for >> other vendors it is like that. Unless you want to say these are essentially >> always on and CANNOT be disabled ever. > > Yes, we want IP to remain enabled permanently, So we are not adding power supply > control in linux. Please describe it in the description: part of the binding. Best regards, Krzysztof