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 89632281510; Tue, 24 Jun 2025 12:52:23 +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=1750769543; cv=none; b=opwIyLheKv8N6PQFOtDjlC9tpKZyw2XvCJRkUnA/L0t8APAr90oDTxW8+D+Kp/hqhRyvX1g/5o2G/nIf86FzWwvbe+B32IiMvuiYCXDer7U+SkQtZFN5RfPG5qCYwqLhiqGB6YFjc6eQjffcWcuofvXoCCpI7HR53J7XKrwdbsI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750769543; c=relaxed/simple; bh=vC1tckTgRedvyr0rPpm+r7oBgh21zwhGiKUVHt+D02k=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=er8DKEWxEEJK/JTac0oZ4cV0BWJY00pNS2zK1uGen2ZXpcgSFtHk9VHPi42nRxS5PiEtQt9xsiUqXEK3BGW45fL8AiKb+vo7FKL85WE59YXCvsLTbL3PSziunPd+uDbd8hgbnF3AOJc08Z841XBNA3BtwJZHkXCBBpiZ8PVE+v8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GZkfhBzq; 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="GZkfhBzq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3463CC4CEEE; Tue, 24 Jun 2025 12:52:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750769543; bh=vC1tckTgRedvyr0rPpm+r7oBgh21zwhGiKUVHt+D02k=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=GZkfhBzqWveKHHpzUUrcpuFc9Q/OXCqSpTO+F4fz6E/0A77Mhndx5sH4V4yKsDLI1 VY9LNPK/x85Bjky3MmHfhZjU4/5IkVtTukDS0Ivs0JC2cG0E2ThHYf45CDUsGFbPgS IRFtdPiGxwpmdoi1u6NzRQnnTja4VQkGl5ifiuM4zXrxQGgLNZvrXf1o6DjSme0SOt laUDX5c9F+yh3FO5396GhpBx2z6HfLj/tciGqX1Z9pPFKstO05P7DCS5/FwQljdUL9 X/UvAU8UV8+YObwgUYjZ3oiinKLeTN4cMR6DYIHbbP/zKIq1V62rcsXte8G3bOLLFN cSE6bkvL24qTg== Message-ID: <145fbca0-bb55-4809-9c13-cbfa50e5b1ec@kernel.org> Date: Tue, 24 Jun 2025 14:52:18 +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 v2 0/3] Add Input Video Control Block driver for RZ/V2H To: Daniel Scally , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Magnus Damm , Philipp Zabel , jacopo.mondi@ideasonboard.com, biju.das.jz@bp.renesas.com References: <20250624-ivc-v2-0-e4ecdddb0a96@ideasonboard.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 24/06/2025 14:35, Daniel Scally wrote: > Hello all > > This series adds a driver for the Input Video Control Block in the > RZ/V2H SoC. The IVC block transmits input image data from memory to > the ISP core (on this SoC, a Mali-C55 ISP). The driver registers an > output video device for userspace to queue image buffers to. One > noteworthy feature is that - because it is not a part of the main ISP > drive - the IVC driver also registers a subdevice, which connects to > the media device created by the ISP driver through the usual v4l2 > async framework. This requires delaying the registration of the video > device until the .registered() callback of the subdevice, so that the > struct v4l2_dev pointer the subdevice connected to can be set to the > video device. > > To facilitate communication between the ISP driver and the IVC driver > we use the new media jobs framework that was posted recently [1]. The > series is also based on top of the latest version of the Mali-C55 > driver [2] and some updates to rzg2l-cru [3]. > > Note that this is not quite ready to merge, as there's an outstanding > bug that sometimes causes the driver to hang. The device should fire > two interrupts per frame; once on completion of data transmission and > once on expiration of the blanking period. The second interrupt seems > sometimes not to arrive, and at the moment the problem is worked > around with a timeout in rzv2h_ivc_send_next_buffer(). We're working > on that issue, but because the driver lends helpful context to the > media jobs and mali-c55 series (and is probably otherwise ready for > comment too) I wanted to post it. > > Thanks > Dan > > [1] https://lore.kernel.org/linux-media/20250624-media-jobs-v2-0-8e649b069a96@ideasonboard.com/T/#t > [2] https://lore.kernel.org/linux-media/20250624-c55-v10-0-54f3d4196990@ideasonboard.com/T/#t > [3] https://lore.kernel.org/linux-media/20250623-rzg2l-cru-v5-0-1663a8c6719a@ideasonboard.com/T/#t > > --- > Daniel Scally (3): > dt-bindings: media: Add bindings for the RZ/V2H IVC block > media: platform: Add Renesas Input Video Control block driver > MAINTAINERS: Add entry for rzv2h-ivc driver > > .../bindings/media/renesas,rzv2h-ivc.yaml | 103 ++++ > MAINTAINERS | 7 + > drivers/media/platform/renesas/Kconfig | 2 + > drivers/media/platform/renesas/Makefile | 1 + > drivers/media/platform/renesas/rzv2h-ivc/Kconfig | 15 + > drivers/media/platform/renesas/rzv2h-ivc/Makefile | 5 + > .../platform/renesas/rzv2h-ivc/rzv2h-ivc-dev.c | 237 +++++++ > .../platform/renesas/rzv2h-ivc/rzv2h-ivc-subdev.c | 379 ++++++++++++ > .../platform/renesas/rzv2h-ivc/rzv2h-ivc-video.c | 678 +++++++++++++++++++++ > .../media/platform/renesas/rzv2h-ivc/rzv2h-ivc.h | 133 ++++ > 10 files changed, 1560 insertions(+) > --- > base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 > change-id: 20250624-ivc-833d24376167 That's b4, right? So where is the changelog with lore link to previous version? Best regards, Krzysztof