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Heiko Stuebner , Kever Yang , Nicolas Dufresne , Sebastian Reichel , Collabora Kernel Team , Paul Kocialkowski , Alexander Shiyan , Val Packett , Rob Herring , Philipp Zabel , Sakari Ailus Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, Mehdi Djait , Krzysztof Kozlowski References: <20240220-rk3568-vicap-v11-0-af0eada54e5d@collabora.com> <88b1dcda-be2d-4c57-b042-c1809ef1dc97@kernel.org> From: Gerald Loacker Organization: WolfVision GmbH In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-ClientProxiedBy: VI1PR09CA0151.eurprd09.prod.outlook.com (2603:10a6:803:12c::35) To AS4PR08MB7735.eurprd08.prod.outlook.com (2603:10a6:20b:512::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS4PR08MB7735:EE_|DB4PR08MB8149:EE_ X-MS-Office365-Filtering-Correlation-Id: 6c1a6835-47dd-4d1a-aff5-08de0a2644a4 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linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Michael, Bryan, Am 10.10.2025 um 15:46 schrieb Michael Riesch: > Hi Bryan, > > On 10/10/25 14:15, Bryan O'Donoghue wrote: >> On 17/09/2025 16:38, Michael Riesch via B4 Relay wrote: >>> Habidere, >>> >>> This series introduces support for the Rockchip Camera Interface (CIF), >>> which is featured in many Rockchip SoCs in different variations. >>> For example, the PX30 Video Input Processor (VIP) is able to receive >>> video data via the Digital Video Port (DVP, a parallel data interface) >>> and transfer it into system memory using a double-buffering mechanism >>> called ping-pong mode. >>> The RK3568 Video Capture (VICAP) unit, on the other hand, features a >>> DVP and a MIPI CSI-2 receiver that can receive video data independently >>> (both using the ping-pong scheme). >>> The different variants may have additional features, such as scaling >>> and/or cropping. >>> Finally, the RK3588 VICAP unit constitutes an essential piece of the >>> camera interface with one DVP, six MIPI CSI-2 receivers, scale/crop >>> units, and a data path multiplexer (to scaler units, to ISP, ...). >>> >>> The v11 of the series adds a media controller centric V4L2 device driver >>> for the Rockchip CIF with >>>   - support for the PX30 VIP (not tested, though, due to the lack of HW) >>>   - support for the RK3568 VICAP, including >>>      - capturing frames from the DVP >>>      - capturing frames from the MIPI CSI-2 receiver >>>   - abstraction for the ping-pong scheme to allow for future extensions >>>   - abstraction for the INTERFACE and CROP parts to allow for future >>>     extensions >>>   - initial support for different virtual channels (not tested, though, >>>     due to the lack of HW) >>> and a V4L2 subdevice driver for the Rockchip MIPI CSI-2 Receiver. >>> >>> The driver can be readily extended to provide support for the RK3588 >>> VICAP variant. In order to keep things simple, however, this extension >>> shall be submitted separately. >>> >>> Looking forward to your comments! >>> >>> To: Mehdi Djait >>> To: Maxime Chevallier >>> To: Théo Lebrun >>> To: Thomas Petazzoni >>> To: Gerald Loacker >>> To: Bryan O'Donoghue >>> To: Markus Elfring >>> To: Sakari Ailus >>> To: Laurent Pinchart >>> To: Mauro Carvalho Chehab >>> To: Rob Herring >>> To: Krzysztof Kozlowski >>> To: Conor Dooley >>> To: Heiko Stuebner >>> To: Kever Yang >>> To: Nicolas Dufresne >>> To: Sebastian Reichel >>> To: Collabora Kernel Team >>> To: Paul Kocialkowski >>> To: Alexander Shiyan >>> To: Val Packett >>> To: Rob Herring >>> To: Philipp Zabel >>> Cc:linux-media@vger.kernel.org >>> Cc:devicetree@vger.kernel.org >>> Cc:linux-kernel@vger.kernel.org >>> Cc:linux-arm-kernel@lists.infradead.org >>> Cc:linux-rockchip@lists.infradead.org >>> Signed-off-by: Michael Riesch >>> Signed-off-by: Michael Riesch >>> >>> Changes in v11: >>> - rkcif: split large driver patch (6/13 of v10) into smaller >>>    patches (6-11/17 of v11) (Bryan) >>> - rkcsi: replaced devm_reset_control_array_get_exclusive with >>>    devm_reset_control_get_exclusive (Philipp) >>> - Link to v10:https://lore.kernel.org/r/20240220-rk3568-vicap- >>> v10-0-62d8a7b209b4@collabora.com >> >> I believe it is the case and please feel free to correct me if I'm wrong >> that you've dropped a long list of sob/co-develop-by, I think we >> discussed that too, because of the level of change, it seems reasonable >> too. > > Correct. The tag list used to be quite complicated [0] due to the > complicated history of this driver. Maxime worked on the driver up to > v5, Mehdi up to v14, I added RK3568 support on top of Mehdi's v14 (with > some valuable contributions from Gerald) and submitted that as v1. v2 of > my work incorporated Mehdi's v14, and here we are, after several rounds > of feedback, at soon-to-be v12 (or, in fact, v25). > >> On question on that, are these people aware of the change and cc'd on >> the list of recipients/contactable/agreeable to the change ? > > I announced this plan as a response to your comment to v10 [1] with > Maxime, Mehdi and Gerald on Cc: and did not hear any objections. > > Hope that this is still OK for everybody! > I agree with that! Regards, Gerald > Best regards, > Michael > > [0] > https://lore.kernel.org/linux-media/20240220-rk3568-vicap-v10-6-62d8a7b209b4@collabora.com/ > [1] > https://lore.kernel.org/linux-media/23ccc744-745d-4a31-a79c-2d64bf1ed43d@collabora.com/ >