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 31F39126F0A; Wed, 22 Oct 2025 08:31:16 +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=1761121877; cv=none; b=sX0Z1h6KGNbo0pG9/Bj5wYQvruvryLqS9rm3zK8lZqeWfZR7zHKEb6kqvJky87dvV/N/RFMUMMJDWABFWBBYfpu3INFj3k80zyhQiVAGWk9i49hCi1AyO3mpbQBZLHlLGrqvSziDAklLFDG+yflsRRynPwFtkuCl4V7w6VJEIBs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761121877; c=relaxed/simple; bh=3+/HLrw1SCNs4U9DqgD5kDSKST1TFoMmIW77ansJP68=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Zwk3qnZQIqEOQ6VNZczaDJfYOElqNJ0Z922gdLACg2ZIYgzhceXHUzZ8HTa9fXManQM3J7j0mTQXKxUkYTrqBUx4q0yPeX6C5zUn0hCe1+Ydvkmao0y0NZZBDFmcLBUai1/04AxDOJ5BD2Lz59KZZVJY9nbQQXTWB+ixPhc6OQA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dUN0WsRX; 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="dUN0WsRX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2B3A1C4CEE7; Wed, 22 Oct 2025 08:31:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761121876; bh=3+/HLrw1SCNs4U9DqgD5kDSKST1TFoMmIW77ansJP68=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=dUN0WsRXikX9eLLYBlVZZ8BqxmRSlDoK6FwoVETQq/zyqsq2PTWiDPKpDjLFOJRgv WfF8V/0VOK51JiC0VNtKYqubMnTA3kEEln6qZZkxLX3dal2p/PJoKQmUDmZ+4Y6Wpc 1L+wwjXXRSVChTe8KqfAGLhpWE2Od2fZix4IW/fHAyD9WnloFMF6Ba0edIuOMbyLtc 3O9izHLg1in4qmkm1CUKCTKnkT0sc/GlUIR0aFpJmJHITQOX7mXMGhRBRqDlxLADRE qgOqvOJS7sY9keSk7/uZCKR6p1h7u2sVkKjAxqcDYVwRdcWM6Q0PSUl5ZrybIfZGdO VirjRMdMqu+Cw== Message-ID: <8b420cd2-9549-4033-b82f-a2bc145b7280@kernel.org> Date: Wed, 22 Oct 2025 10:31:11 +0200 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 v4 2/9] dt-bindings: media: nxp: Add Wave6 video codec device To: Nas Chung , mchehab@kernel.org, hverkuil@xs4all.nl, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, jackson.lee@chipsnmedia.com, lafley.kim@chipsnmedia.com, marek.vasut@mailbox.org References: <20251022074710.575-1-nas.chung@chipsnmedia.com> <20251022074710.575-3-nas.chung@chipsnmedia.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 22/10/2025 09:47, Nas Chung wrote: > Add documentation for the Chips&Media Wave6 video codec on > NXP i.MX SoCs. > > The Wave6 video codec functionality is split between a VPU > control region and VPU core regions. > The VPU control region is represented as the parent node and > manages shared resources such as firmware memory. Each VPU > core region is represented as a child node and provides the > actual encoding and decoding capabilities. > > Both the control and core regions may be assigned IOMMU > stream IDs for DMA isolation. Please wrap commit message according to Linux coding style / submission process (neither too early nor over the limit): https://elixir.bootlin.com/linux/v6.4-rc1/source/Documentation/process/submitting-patches.rst#L597 > > + > + ranges: true > + > +patternProperties: > + "^video-core@[0-9a-f]+$": > + type: object > + description: > + A VPU core region within the Chips&Media Wave6 codec IP. > + Each core provides encoding and decoding capabilities and operates > + under the control of the VPU control region. You explained more in previous email than in this description. Are these independent? Can they be independently used? But you also said there is one processing engine, so I do not understand why these are separate. If you have one engine, there is no such thing as separate cores. Best regards, Krzysztof