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Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wev1Z-00000002BSi-3oQn; Wed, 01 Jul 2026 13:30:45 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wev1W-00000002BST-3ar1 for linux-arm-kernel@lists.infradead.org; Wed, 01 Jul 2026 13:30:42 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 5001340272; Wed, 1 Jul 2026 13:30:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 128DC1F000E9; Wed, 1 Jul 2026 13:30:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782912642; bh=A5ZmUhI4lGBrijj+WNtqGtqeoK5QeoNNW0ruug9fc60=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=je9UZWT+wuT+sTNUvVgqw3NOS4v+DMNpfirm04gvG57bmytGksEKU3th/tPZwfU94 6Cj4IRuaEYe1HzeSNtxJ6cPuTO/D5I8T0aitOjZN6XsbcfCVdJqfcG5ZMvVpC2QfE+ OWDRge7BWt4ZC09PudmO9upREu3p9rg14O0qt7BWszynUI6OqMlmNdESlTifxjMSxo NUsolddCbDzqQmgLE2lU3sh8bvBsLFClwAmrBGshjKRdDgxE+MUFxh6ra6XF6lyhC9 NYdY4tZS4CLRSbV30BimOIwMtKBrC92NBTuoPsJE5QfuODxCBVaFVA3OmNEZtTYWIA gsNPreUi4hjFA== Message-ID: <0f05e07a-57ab-4ae6-8274-c9c496ca60c2@kernel.org> Date: Wed, 1 Jul 2026 15:30:31 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 1/5] dt-bindings: arm: coresight-tnoc: Add standalone qcom,coresight-agtnoc compatible To: Konrad Dybcio , 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 , 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: <20260701-fix-tracenoc-probe-issue-v4-0-aefab449a470@oss.qualcomm.com> <20260701-fix-tracenoc-probe-issue-v4-1-aefab449a470@oss.qualcomm.com> <20260701-stirring-piculet-of-vastness-a361e5@quoll> <4117c406-0d75-4eb1-842e-1d346b7fbf99@oss.qualcomm.com> <9aa63427-ba41-436d-ab19-a533082d336a@kernel.org> <62ac6887-1551-490b-b42b-2661d7152734@oss.qualcomm.com> <7838f7c3-0f38-4e93-a9c1-88f387e78ca9@oss.qualcomm.com> <12709ff6-bb42-4d3b-9f9d-e327cd8d89cb@oss.qualcomm.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 01/07/2026 15:09, Konrad Dybcio wrote: > On 7/1/26 2:54 PM, Jie Gan wrote: >> >> >> On 7/1/2026 7:02 PM, Konrad Dybcio wrote: >>> On 7/1/26 9:31 AM, Jie Gan wrote: >>>> >>>> >>>> On 7/1/2026 3:26 PM, Krzysztof Kozlowski wrote: >>>>> On 01/07/2026 09:16, Jie Gan wrote: >>>>>> >>>>>> >>>>>> On 7/1/2026 2:57 PM, Krzysztof Kozlowski wrote: >>>>>>> On Wed, Jul 01, 2026 at 09:53:41AM +0800, Jie Gan wrote: >>>>>>>> The TNOC compatible previously only allowed the two-string AMBA form >>>>>>>> "qcom,coresight-tnoc", "arm,primecell", which forces the device onto the >>>>>>>> AMBA bus. >>>>>>>> >>>>>>>> Convert the compatible to a oneOf and add a standalone >>>>>>>> "qcom,coresight-agtnoc" compatible alongside the existing AMBA form. The >>>>>>>> standalone string carries no "arm,primecell" entry, so the device is >>>>>>>> created on the platform bus instead of the AMBA bus. >>> >>> [...] >>> >>>>>> AMBA primecell identification. The purpose of the new compatible is to >>>>>> clearly distinguish this platform-specific case from the standard >>>>>> AMBA-based implementation. Or shall I re-use the existing compatible >>>>>> "qcom,coresight-tnoc" as platform standalone compatible? >>>>>> >>>>>> We already have a similar pattern for the interconnect TraceNoC device, >>>>>> which uses the platform-specific compatible string qcom,coresight-itnoc. >>>>> I do not see there a fake, duplicated compatible for the same device. >>>>> Can you elaborate how is that relevant? >>>> >>>> Will fix it by removing AMBA related description. >>>> >>>> Shall I update the clock name from apb_pclk to apb as a platform device? >>> >>> Why? >> >> For the previous platform devices, we got comments to add the clock-name with "apb" instead of "apb_pclk". >> >> Please check the qcom,coresight-ctcu.yaml and qcom,coresight-itnoc.yaml > > Well, if you need to break the bindings already, might as well on > the grounds of choosing a saner ("clock names shouldn't include _clk") > name.. Not sure if Krzysztof will like it I miss the rationale for doing the change, why exactly this binding should have clocks corrected. Best regards, Krzysztof