From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E827810D14A2 for ; Mon, 30 Mar 2026 11:41:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0OPWtHMkBQAokQDYsfPoAxk5ErMPFEGv+sj69aitlQg=; b=BrwE6MjVONBuLz x4x5t6CaELBeP5HQ5Jq2s6wgxb9td/aoCIkN7sEsUrtEzINVlosNuedXve59/GnYhwz8BoQP/azWS qBa5LVw5o75BndS1XRDyDK1uCJdF15ok0r/nRbyMp/2N5hGidXI8Tbmc37c1M+LtXzYoK0fLGxYEw 4+1AmI8Hw5yBS4ZwYMJ4t5Cyb2qR3QWKz8Ra3GbCy6LwJYrRlUHdIFsvxvjZgLjxALUyZGM9FM45X lXAYOtlUgWL7kIEVxbjutA3LZcFE6qvTcOoOJcDvRBB5V92DTc4PVZwyapHTxzL39H2XLvPQcBiDS yyvlsS0UxNU38TROT6mQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w7B0H-0000000BBBt-2Efd; Mon, 30 Mar 2026 11:41:57 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w7B0G-0000000BBBm-3mE5 for linux-phy@lists.infradead.org; Mon, 30 Mar 2026 11:41:56 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 5727D6012A; Mon, 30 Mar 2026 11:41:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 22243C2BCB2; Mon, 30 Mar 2026 11:41:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774870916; bh=EOIraZfT3LaP1D8hYweBX5dLmcXzYF30cAdNPSQCC2Q=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=tUtyGXBos9E2kXQ+5HdLG8McmasamfKnl9dYARbBogmVfzz9GcyRGRe8LVdCFbKme NaoNWbLPPBMtsuWj92M/JxDDEbSiazsngt39lGpjtTyvzTZjmJoPRdvtM9mk9Aei1L WulxCoFXEuvssF7/TelFfzD9O+KfZdigxxItoygaXWAALCCoSvuSqj7APNKc4aUIhK BI5cUMYiGqFBW8rhOquKY1LR/Dfo9f3SMu+pFPlF0Rd+NW8YG6q4XSCscR/AJeRM8s 7T8mORrYyLxr9Rl0scKJ5rI7GnftQX1/wZdUjtarBud/MEy/QqQp6eaBHvYzHQKq4/ 0KRhEtzxPay0Q== Message-ID: <6ea214cf-e68e-44c6-ba0c-38aa0a644ae9@kernel.org> Date: Mon, 30 Mar 2026 12:41:51 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 1/2] dt-bindings: phy: qcom: Add CSI2 C-PHY/DPHY schema To: Konrad Dybcio , Neil Armstrong , Bryan O'Donoghue , Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Vladimir Zapolskiy , 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: <20260326-x1e-csi2-phy-v5-0-0c0fc7f5c01b@linaro.org> <20260326-x1e-csi2-phy-v5-1-0c0fc7f5c01b@linaro.org> <7712fbdd-a225-49f0-aeb9-ebcbb9d5abac@oss.qualcomm.com> <1f38187a-9464-4aa9-b70a-03b767349d56@linaro.org> <016c03b8-27c3-41dc-a630-8e7095db1f88@linaro.org> <456ded59-d13e-4b61-975b-97ca48b5e771@linaro.org> <76ea03d0-d41b-4880-a48c-06570eb089ed@linaro.org> <0101d8bc-1ae8-475e-bb9e-cc1e16db87ec@kernel.org> <6d5ebab6-3c4e-4a1c-9578-6e926cbd96de@oss.qualcomm.com> From: Bryan O'Donoghue Content-Language: en-US In-Reply-To: <6d5ebab6-3c4e-4a1c-9578-6e926cbd96de@oss.qualcomm.com> X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On 30/03/2026 12:34, Konrad Dybcio wrote: > Let's take a step back - since any CSIPHY can feed into any CSID (at runtime), > the resulting nodes would either look like: > > // hardcoded, m may != n > csid_n: csid@1000000 { > phys = <&csiphy_m>; > }; > Well that would be wrong they can connect to any CSID. We'd be churning the user-space ABI and imposing an artificial constraint on what the hw can do. > > // determined at runtime > csid_n: csid@1000000 { > phys = <&csiphy_0>, > [...] > <&csiphy_n-1>; > }; This I think works well and actually maps to what the hardware can do. This would be where to talk more about Neil's mux. > > or we could store them once, centrally, in the "CAMSS_TOP" node and > pass handles around as necessary: > > // camss "catalog/manager" driver/library provides CSIDn with PHYm > camss: camss@10000000 { > phys = <&csiphy_0>, > [...] > <&csiphy_n-1>; > > csid_n: csid@1000 { > // no PHY references > }; > }; That could work too. Either way I think this is to be hashed out when doing CSID. --- bod -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy