From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 C2AAC3B27FA; Mon, 8 Jun 2026 08:56:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780908990; cv=none; b=k3u21qY5s7yesoP1EsJLVpTYpEEEhhqUHv5h+92QboG0301q8XmKHASuqT5yMQX0TJoF9CO6TjYhlQWGD1qua73D16yaa7mhw3Iyt+Ql4zOFUkYq+InzpqntVJ1MgAP4F5szosZf3NSS8bFA+26iCBWy30zZuVa+d1SoTHI1YQs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780908990; c=relaxed/simple; bh=uE3q7lOQhX6TD1NljIu5EQpKW9yfTOM+EJ637Tuqsek=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=bVY3AZLMcnv6w1xF1VQ5krP5IhJSKDXl1J12mVoff8iYi0AQSBHqtJASyNTtL+V4wPx47R95x8fDkohBXrY+iq9RhmRcAdtxrbkT8r+9HBSM92Rc5N4Vg4/htYM+VXF1cFBJVsxmA2JpOUJmoBeH3gDtyyfHZSZ/mvF5Ou+vUR4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=K51igrXX; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="K51igrXX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2BF5D1F00893; Mon, 8 Jun 2026 08:56:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780908989; bh=7TaSkqVM8tNNbUj9Lkas7kKacOO87VVrmRgpxX7eEsE=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=K51igrXXDrmyfIC9RopwvgKi/HRJ2pT7LIslbueCwWdyWgMnE698304ErVsCul9BX QUrIwAXbCEK7qcGOUu+b5FeLObu7ltjgktgcK20MaRywoTQxGHtsZclIVDGK37xDwI YTchxvoj7tae5wZ7sRMpBfNJ58cETHQJzSjvrYEOQu5R0qg8KQ+8efN9CBPvOew6X6 zQUB8HScAi9UX66Cg/XvcuFqj+/ZDKxZAYpabCskiXpnqbcsYfCW/3T9lZJMu3fNfL P9gDOoQKRIxO8wdEhR0xTAvZnadZ7qF8nR7zBCRZQBCoR+CUl7J7Dy2uHk6/vkAO1S Y/z1vOAuAm6dg== Message-ID: <1715df23-044a-4ebe-bf24-e0299b32e4ae@kernel.org> Date: Mon, 8 Jun 2026 09:56:24 +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 v7 0/8] media: camss: Add support for C-PHY configuration on Qualcomm platforms To: david@ixit.cz, Robert Foss , Todor Tomov , Bryan O'Donoghue , Vladimir Zapolskiy , Mauro Carvalho Chehab , Luca Weiss , Petr Hodina , "Dr. Git" , Cory Keitz , Loic Poulain Cc: Frank Li , Konrad Dybcio , Kieran Bingham , Sakari Ailus , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org References: <20260605-qcom-cphy-v7-0-426c37e9008f@ixit.cz> From: Bryan O'Donoghue Content-Language: en-US Autocrypt: addr=bod@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 05/06/2026 14:14, David Heidelberg via B4 Relay wrote: > Note: WIP tag added, as not everything from the previous review round has > been addressed. > > # Short summary > > This patch series extends the Qualcomm CAMSS (Camera Subsystem), > including CSID and CSIPHY components, to support C-PHY mode configuration. > > # Background and motivation > > Modern smartphone cameras increasingly rely on MIPI C-PHY rather than > D-PHY, thanks to its higher data throughput and signal efficiency. > As a result, many OEMs adopt C-PHY interfaces for main (rear) cameras on > Qualcomm-based devices. > > Until now, mainline Linux lacked C-PHY configuration support for Qualcomm > chipsets, preventing bring-up of primary camera sensors on several > Snapdragon platforms. This series closes that gap. > > - Introduces C-PHY configuration support for the CAMSS driver stack, > covering both CSID and CSIPHY blocks. > - Successfully enables C-PHY operation on the Snapdragon 845 platform. > - Tested on OnePlus 6 and 6T phones running mainline Linux, > using the Sony IMX519 main camera sensor. > - The new configuration allows other chipsets versionsto enable C-PHY by > simply adding corresponding sensor driver support and csiphy > initialization data, following the example set for sdm845. > > With this patch series, mainline Linux gains working C-PHY support for > Snapdragon 845, paving the way for improved main camera functionality > across many Qualcomm-based devices. The groundwork also simplifies > future enablement efforts for additional SoCs and sensors. > > Until merged, the series will be also available at: > https://codeberg.org/sdm845/linux/commits/branch/b4/qcom-cphy > > Signed-off-by: David Heidelberg > --- > Changes in v7: > - Move logic out of switch. (Frank) > - Change csid cphy knob to phy_sel using enum. (Bryan, Frank) > - Link to v6: https://lore.kernel.org/r/20260603-qcom-cphy-v6-0-e50de0b557a8@ixit.cz So I was asking you previously about a dts to support this in some way in effect to prove it works. I had a meeting with some qcom guys on Friday and the informed me they have based work on top of yours, which is inference enough that it works. Some Tested-by: from others interested in this work, would be greatly appreciated at this stage. --- bod