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 5BD3917BA2; Wed, 22 Apr 2026 06:27:36 +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=1776839256; cv=none; b=e1OmW3anVzkgRy6+NQxumwZnmLhc84aQ2dH+R3LyAY060yGIeof8+gXijnhaYGSovKI1ZlnQ0Ftt0K/P2i7Nzsf5ixK1l0y16jxB6dxQfe8x9IU5ah1bjWnUaT43N0NzkiKNkZ01yaP0BavGY86SafdEO2g6AIdC8d4MNomaXUA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776839256; c=relaxed/simple; bh=+SIqJ8k3Ofu+hDR+0W066dLrUyDNulLp2dsa8s7SKmU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=LW6/DAL2kXnCxL7SEdtlq6VtdvP+S81GPIDbOtu4SCOYVXuhvOgDgCUfBhMz8hrFJS3/GBC6XTCh5c2MnrlbpgO81hvSNiCox3poORDzR/6/JTPbnxX92jZU9byjlPXIjysdL/wwXnKeEz6eYVdStNjyClFofqL9WXRnbeXpj3Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pmOmhxlg; 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="pmOmhxlg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5543BC19425; Wed, 22 Apr 2026 06:27:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776839256; bh=+SIqJ8k3Ofu+hDR+0W066dLrUyDNulLp2dsa8s7SKmU=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=pmOmhxlg7Zkis6wJ5Gx11GlCbY48THRYq/sequKTFcEgJUdOYSPZJD2XbTXPc0kAX 9pUB7VPsfHAtc8/tTmI0lJmf6daJZmrZooZk1xFRTeVn5FFjwEZbR5iTCOI8NphLVT qF72kUEU9TnyaUG//REF6zfn8JUwVfpsF4fbQYSvPT8tnkU6S7ULKdiZVBRt/IK6N2 p1gWH2T+tP2PaSOtNumlj7ZD2CMQCfQnfsdLGDiKn4IknL3XYOSDv6F6GLflw6NdCp pmVDu9ynrv7gtS69+uFKbVoSEzvhpJWxxUfhSxz/zbrr6uYMi2tmtl0YSjNMYUSoK/ mmGPJMUmPcNHQ== Message-ID: <3b21c15e-942a-4a01-a083-8fbe33197690@kernel.org> Date: Wed, 22 Apr 2026 08:27:31 +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 v3 1/5] dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Add support for glymur Gen5 x8 bifurcation mode To: Qiang Yu Cc: Vinod Koul , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Bjorn Andersson , Konrad Dybcio , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260412-glymur_gen5x8_phy_0413-v3-0-affcebc16b8b@oss.qualcomm.com> <20260412-glymur_gen5x8_phy_0413-v3-1-affcebc16b8b@oss.qualcomm.com> <20260415-wooden-prawn-of-lightning-dc1ddc@quoll> <20260417-awesome-tacky-coot-e59a30@quoll> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 20/04/2026 09:23, Qiang Yu wrote: >>> It is not the same as the 5x4 PHY. In DT, we model three PHY nodes: >>> phy_3a (1x4), phy_3b (1x4), and a separate phy_1x8 node for x8 mode. >> >> OK, that's what I wanted to hear. And that's what should not be done, >> >> You should not have a separate node for the same hardware. First, DTC >> will give you a W=1 warning, although warning itself should be moved to >> W=2. >> >> Second, the warning tells important story - same hardware is described >> twice. >> >> You only need phy_3a and phy_3b, so only two in total. > > We can keep only phy_3a and phy_3b, but still add new compatible > qcom,glymur-qmp-gen5x8-pcie-phy in binding, right? No, you cannot. You cannot create fake device nodes. Best regards, Krzysztof