From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.mleia.com (mleia.com [178.79.152.223]) (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 84311259CA0; Mon, 14 Jul 2025 15:08:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.79.152.223 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752505702; cv=none; b=RcUqXfyuO3UIpYSflj14xkixPkRzVcSdOtY8HOSXeVUZGwdT0GqJK9ywUh/8ucZGN1tKuntv+4YTOTEgAGm4xTyCQkwG1pWiMSMVFfTBNH8eBIze6zCZ0KXlUxStSRfyLwGOd6uGOuEImoPtfwxqDjQAvdtFhA13aYZr0YsWdTE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752505702; c=relaxed/simple; bh=pm1kFbFPyW13GRr3apbRou0GauefSTkU75vCZ5hpLZY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=nl+77kKShCA8xkEZvEHCHkaMCxEyBzHyORZIYMbllvJ0I1irUH0CmT2/oC99th/o7rUymeMd3URI8k220jtxdfLhiQijrorb5gJgrX2ldz7JfMHdSP3Yg9XF912ojvzkQMZcecHtJ0iZmL6/aHRDexMJK+ld0WWR+43WuoxoKcM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mleia.com; spf=none smtp.mailfrom=mleia.com; dkim=pass (2048-bit key) header.d=mleia.com header.i=@mleia.com header.b=bspY621b; dkim=pass (2048-bit key) header.d=mleia.com header.i=@mleia.com header.b=bspY621b; arc=none smtp.client-ip=178.79.152.223 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mleia.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=mleia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mleia.com header.i=@mleia.com header.b="bspY621b"; dkim=pass (2048-bit key) header.d=mleia.com header.i=@mleia.com header.b="bspY621b" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mleia.com; s=mail; t=1752505139; bh=pm1kFbFPyW13GRr3apbRou0GauefSTkU75vCZ5hpLZY=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=bspY621batrJ0gWabtq4zBNa3xRXyHyzG6r6K/OXMQs8yYuOC2vRlBgcUOy9sM8Jb E0uMow+5XJlRUFF2mJr9FMaNrBEq6c3jU0gq2ml2jUxgSkjbNTa/EvfAs7dRb9IhIg uE33OqWst1GKKzCnbKnDNC9T71Q36A+wKq8tQLnPoX1n01E3OQcxue8ntDQU3EOS9o rgCDTbTpioeIcwW1th7xfnFzRBWtf3zNW8lYNw2qZC3FlXM10GksX23hQt4rlyzSkb TYuQjVR/eNPSFchLYJxmzVId2/CbWOrDWL1B+8suZEG8IRmdhPVfr/9kUObfFrT93S W+DjEU5I+NV+Q== Received: from mail.mleia.com (localhost [127.0.0.1]) by mail.mleia.com (Postfix) with ESMTP id 1F5523C8846; Mon, 14 Jul 2025 14:58:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mleia.com; s=mail; t=1752505139; bh=pm1kFbFPyW13GRr3apbRou0GauefSTkU75vCZ5hpLZY=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=bspY621batrJ0gWabtq4zBNa3xRXyHyzG6r6K/OXMQs8yYuOC2vRlBgcUOy9sM8Jb E0uMow+5XJlRUFF2mJr9FMaNrBEq6c3jU0gq2ml2jUxgSkjbNTa/EvfAs7dRb9IhIg uE33OqWst1GKKzCnbKnDNC9T71Q36A+wKq8tQLnPoX1n01E3OQcxue8ntDQU3EOS9o rgCDTbTpioeIcwW1th7xfnFzRBWtf3zNW8lYNw2qZC3FlXM10GksX23hQt4rlyzSkb TYuQjVR/eNPSFchLYJxmzVId2/CbWOrDWL1B+8suZEG8IRmdhPVfr/9kUObfFrT93S W+DjEU5I+NV+Q== Message-ID: Date: Mon, 14 Jul 2025 17:58:57 +0300 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 2/2] phy: qcom-mipi-csi2: Add a CSI2 MIPI D-PHY driver To: Bryan O'Donoghue , Vladimir Zapolskiy , Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Bryan O'Donoghue , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250710-x1e-csi2-phy-v1-0-74acbb5b162b@linaro.org> <20250710-x1e-csi2-phy-v1-2-74acbb5b162b@linaro.org> <11b573d5-ce4d-476c-b94c-216d427cd838@linaro.org> <08261aa4-689b-4d6b-bfd2-221c1976d254@linaro.org> From: Vladimir Zapolskiy In-Reply-To: <08261aa4-689b-4d6b-bfd2-221c1976d254@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-49551924 X-CRM114-CacheID: sfid-20250714_145859_151169_935C6CCA X-CRM114-Status: UNSURE ( 9.41 ) X-CRM114-Notice: Please train this message. On 7/14/25 17:43, Bryan O'Donoghue wrote: > On 14/07/2025 15:16, Vladimir Zapolskiy wrote: >>> +#define DEBUG >> >> Still under debugging?.. > > oops thanks. > >> Well, the phy should be a multimedia device, and this driver is not >> the one, thus you can not use it to connect sensors and put the IP >> into a media pipeline. > Ah no, I don't agree. > Please see my previous email. > I believe there is very little room to disagree... This proposed device node scheme does not solve the known and already discussed technical issue expectedly, namely there is no given way to describe a combo mode hardware configuration, when two independant sensors are wired to the same CSIPHY. This is an unsolvable problem with this design. Sensors are conneced to CSIPHY IP blocks, CSIPHY is connected to CSID. -- Best wishes, Vladimir