linux-kernel - Re: [PATCH v14 00/18] media: rockchip: add a driver for the rockchip camera interface

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Message-ID: <aQ4tJg8r_j4NyKhv@kekkonen.localdomain>
Date: Fri, 7 Nov 2025 19:32:22 +0200
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: michael.riesch@...labora.com
Cc: Mehdi Djait <mehdi.djait@...ux.intel.com>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>,
	Théo Lebrun <theo.lebrun@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Gerald Loacker <gerald.loacker@...fvision.net>,
	Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
	Markus Elfring <Markus.Elfring@....de>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Kever Yang <kever.yang@...k-chips.com>,
	Nicolas Dufresne <nicolas.dufresne@...labora.com>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	Collabora Kernel Team <kernel@...labora.com>,
	Paul Kocialkowski <paulk@...-base.io>,
	Alexander Shiyan <eagle.alexander923@...il.com>,
	Val Packett <val@...kett.cool>, Rob Herring <robh@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>, linux-media@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	Mehdi Djait <mehdi.djait@...tlin.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Bryan O'Donoghue <bod@...nel.org>, Chen-Yu Tsai <wens@...e.org>
Subject: Re: [PATCH v14 00/18] media: rockchip: add a driver for the rockchip
 camera interface

Hi Michael,

On Fri, Oct 24, 2025 at 02:51:29PM +0200, 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, ...).

I understand both RK3568 and RK3588 include an ISP. Do you have insight on
how would this work, should the support for the ISP be added later on?

-- 
Kind regards,

Sakari Ailus