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 2D86B3EBF07; Thu, 9 Jul 2026 08:46:50 +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=1783586812; cv=none; b=ZAaGqJdy8+KlCOmYg3A4mKCPAjGPMRsRlnkbvwIVI2TpDUgCKaC6b2I5JYCGV28Aorc7AqwocFNbTtzsOKjl9FlgBHNkXVbjfcYlO98toQzlEKyd0Xb9ElBVZxMxRMmNkl3SGvSQnF2b+C1IgYEpsYuQLK+eB8a6m9FUxRjByQk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783586812; c=relaxed/simple; bh=oaokfdcuMYF+SBFvJOCWS5TrDamr/cqfrEMAHQqiScg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=uVwoJ8wb8ukhZDtdhYETl0wpWtNUFs2V+ArjtKMZ4EYyyVqKtMeLen7J/Nld6Fe9HwS/a7W0j6UlsBAnqwzl+Jndge3K4MDf82MZw2lGr1vg9SuDL9zsuPv8C8IVXJGrKsIFxcl/LBrddScU31cmKNcxxW2r8BrWi7b1yhR2V7I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=G4WMipwo; 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="G4WMipwo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D96B81F000E9; Thu, 9 Jul 2026 08:46:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783586810; bh=IHQJsV8E07+RUjPxkTHWjIGqSk2RzvsByCrBzmrJwh4=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=G4WMipwo6eRMq/hlnTebvOx53KZRTAJtF1RXSC74Ah0K8bVFiJF3mMHsLhIPi9mOH uyX3/0ixjcGw7d+uHWj3SeJWSxiylw/ykmz3BZ0Xcaa55nfvYjhbCqXffRfhHxRPkw 6wqzoecwSL7Vpgl7Izm94BDcjeKR8t708UJX57+IsJzdu9pxPaedaafLIYPH/yhV9m Nr96bsibJqpVDElifbl85D9O7Mk6dkp5ceHiHPK9+dwAuJIA13kn8QRyEG4rXc1rM/ 9sMY6QqxK5Kw9xWRJLhn9t9zBH+YKeMt7pgapYvsgg3jAnVAQEyNPe++Tnp+Y5A98D +bVR26kgMBSVQ== Message-ID: <02baada9-3f87-4e60-a469-44af5ebe1afe@kernel.org> Date: Thu, 9 Jul 2026 10:46:40 +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 v5 1/5] dt-bindings: arm: coresight-tnoc: Drop arm,primecell to bind on platform bus To: Jie Gan Cc: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tingwei Zhang , Jingyi Wang , Abel Vesa , Suzuki K Poulose , Mike Leach , James Clark , Leo Yan , Yuanfang Zhang , Abel Vesa , Alexander Shishkin , Konrad Dybcio , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org References: <20260707-fix-tracenoc-probe-issue-v5-0-bf733ed9ebd0@oss.qualcomm.com> <20260707-fix-tracenoc-probe-issue-v5-1-bf733ed9ebd0@oss.qualcomm.com> <20260709-versed-marvellous-pigeon-22e2ba@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 09/07/2026 10:34, Jie Gan wrote: > > > On 7/9/2026 3:59 PM, Krzysztof Kozlowski wrote: >> On Tue, Jul 07, 2026 at 05:08:49PM +0800, Jie Gan wrote: >>> The TNOC compatible previously required the two-string AMBA form >>> "qcom,coresight-tnoc", "arm,primecell", which forces the device onto the >>> AMBA bus. >>> >>> Change the compatible to a single "qcom,coresight-tnoc" string with no >>> "arm,primecell" entry, so the device is created on the platform bus and >>> bound by the platform driver through its compatible string. >> >> I asked already: this is not a valid reason. References to Linux >> structures are not correct here. If this is your reason, then answer is: >> fix drivers, by renaming or doing whatever is necessary to platform bus >> to behave like amba bus. > > The issue is that we are not allowed to introduce a DT property to > bypass the AMBA bus validation, which reads the Component ID (CID) It is the first time "bypass the AMBU bus validation" appears in this patch. You do not see that as a problem? Again, third time and the last: describe the actual hardware and the actual problem coming from the hardware. Best regards, Krzysztof