From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (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 82A11336ECC; Fri, 7 Nov 2025 18:42:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762540931; cv=none; b=bRyJzNFDt1lGhPamxGQa/VMAhTda64BW3gjoB7ruuAUKSWW/TDpFJru3rps3JGSXl3WnL73DT1+TYVp70sVYXzRofloqC5dseKvHikxcDmmy7VN53V7hMmTkTsX3rJbP/pehoXWZrwewU0ZpA0ov3IU/9yKEUZyDUqRSUiMj/Dg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762540931; c=relaxed/simple; bh=QurK2/aeYYaTshySUtEliqovujqE6ttMkDCo9FMWluk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=lSTQ8zoGXed8LIoepM6hW+nZWJo2p8fUrUh6NLi5jLjd9Hqjayo3zJ3dgXLBhzPgS8T30xBM9iMyon6IoPrfUMPYDsy5pnAS68mSYjaCETKqqPOkZkpIPmz31msxpp84i96+3Q40kz2y0Yb4AfrA3Y7o9lIIW6DDrPmfYHGhA4U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=eJxS1HR/; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="eJxS1HR/" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1762540921; bh=QurK2/aeYYaTshySUtEliqovujqE6ttMkDCo9FMWluk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=eJxS1HR/gSikwNVeEpl1avVNjIn7ZGA5CTTYUp2tru/xqQnyTn0H3l11WaYOyugVm +RbdSUs6PSlOPKSYLA0/iLT+ftjhNzx0D4/qIkVqCykXfPtjI7NdPlL0ekn1tF4Rhw OMp49kkjL8hTafEWwJnuSBP+fWL2jyYRY6HnXojFl466kwGFzqmeWCGK8Ado7+SMss 642WgG6YFCbEEZDrMOHAIFkMQSBTqkV3dmpEwXCG1RQOGhlcUTVksZiyU4iGqQWD3c tcZ5lzNIroWcWn84WINhOEpiSRiSISmIZ8Jhs0wd3iv9v1LTZdtLVMSZwAWEmOO9pb bDpj0p60CljWw== Received: from [10.40.0.100] (185-67-175-126.lampert.tv [185.67.175.126]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: mriesch) by bali.collaboradmins.com (Postfix) with ESMTPSA id 4814D17E108B; Fri, 7 Nov 2025 19:42:00 +0100 (CET) Message-ID: <074cd08e-0412-49f9-8dd9-b1f96eb11717@collabora.com> Date: Fri, 7 Nov 2025 19:41:59 +0100 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 v14 00/18] media: rockchip: add a driver for the rockchip camera interface To: Sakari Ailus Cc: Mehdi Djait , Maxime Chevallier , =?UTF-8?Q?Th=C3=A9o_Lebrun?= , Thomas Petazzoni , Gerald Loacker , Bryan O'Donoghue , Markus Elfring , Laurent Pinchart , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Kever Yang , Nicolas Dufresne , Sebastian Reichel , Collabora Kernel Team , Paul Kocialkowski , Alexander Shiyan , Val Packett , Rob Herring , Philipp Zabel , 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 , Bryan O'Donoghue , Chen-Yu Tsai References: <20240220-rk3568-vicap-v14-0-b38b6da0fc80@collabora.com> Content-Language: en-US From: Michael Riesch In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Sakari, On 11/7/25 18:32, Sakari Ailus wrote: > 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? > Short answer: Yes and yes. Long answer: The patch series at hand adds support for the PX30 VIP and the RK3568 VICAP. I cannot really say something about the PX30, but on the RK3568 VICAP and ISP are orthogonal (the ISP features its own MIPI CSI-2 receiver, different from that introduced in this series). Thus, ISP support can be introduced anytime (whenever someone is motivated ;-)). Once this patch series is merged, I'll push out changes that introduce support for the RK3588 VICAP. We can discuss the integration of any RK3588 ISP in this scope then -- and there may be some things to discuss as there the VICAP and the ISP(s) are directly connected by means of a MUX unit in the VICAP. Alright? Best regards, Michael