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 A85793BFAC8; Fri, 10 Jul 2026 07:03:41 +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=1783667024; cv=none; b=nVHOtD+5R0Efvr6hDDWAYLhQUPvcFmtPW9BEbWsmxvBbXboYRqcXuwIQTxWjP/RUzh2qzjD71IbM/r4kqVl/5edSR177x2S4zGG+duz6Drpa1u0KxqNiXm7xQ2Nng1VZgDIwFJE4+nz8o598CRV7tzefD5/mMHEhoOBqjZUnymU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783667024; c=relaxed/simple; bh=4jvl6rk4X89gpWX4mrKH9TCVaTeZSfapdIhYU3YONMc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=eIxSs7vRmH7wZ7K4POAXjjP58CCC6D91FMWy8ZHj9FUrZqRjENkn/31ppaZJnBScmORM7nMn/wqf2IldP6gEIaqwywyNbstMoE4B7bfZRc1RcjQnCjOyNOBqSEY4q+GTsIPeWRPDnhJ2aF3oPmWBibtB3mTDcO6Pzy1aAnrUDO0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HkJ1qk3p; 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="HkJ1qk3p" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7E0A71F00A3A; Fri, 10 Jul 2026 07:03:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783667020; bh=ffR7ZryagVGOEuQIJ783LXqlEOLErcxNTF8ceIZ6QJs=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=HkJ1qk3pVg1gNUsVBpd65sgOKOB4CRDg/CH/bZFHYVMz/b02CI7Oy/8lJBqD895Rr QXi94LZLSIuiKmbwV/bp2HgA4hCZc0zi9eXKzfGK4jg6Fhd61aGKCf+iDRTLKG0u6A XEBPoLrh9WKkmLWh7Ul+zBA2dptxL4+SO1xt0CgPFL4BB2pFsF3VwVWLsfpO4XrljB Y1CZowWo+d9HUZqvgFlTI1yAqNiRQXybjjz6C7AdTv/f7hkP6PIoG8R2z/DcV/ilOe NnB1d3bAIhKBtmwcACu/6Bu2gVCYva8FXuqks/N3SZBF6baXrVD9k+ND374UA6s+0j 2JVL1iulOtwZQ== Date: Fri, 10 Jul 2026 09:03:36 +0200 From: Krzysztof Kozlowski 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 Subject: Re: [PATCH v6 1/5] dt-bindings: arm: coresight-tnoc: Bind on platform bus instead of AMBA Message-ID: <20260710-sweet-loutish-lynx-8698f2@quoll> References: <20260710-fix-tracenoc-probe-issue-v6-0-41eb36fef8d9@oss.qualcomm.com> <20260710-fix-tracenoc-probe-issue-v6-1-41eb36fef8d9@oss.qualcomm.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20260710-fix-tracenoc-probe-issue-v6-1-41eb36fef8d9@oss.qualcomm.com> On Fri, Jul 10, 2026 at 10:39:00AM +0800, Jie Gan wrote: > The Aggregator TraceNoC hardware exposes CID registers, but the Component > ID value returned by the hardware is 0x00000000 instead of a valid AMBA > Component ID. As a result, the device cannot be identified on the AMBA > bus. > > Describe the Aggregator TraceNoC with a dedicated single > "qcom,coresight-tnoc" compatible instead of the two-string AMBA form > "qcom,coresight-tnoc", "arm,primecell". This creates the device on the > platform bus so it is bound by the platform driver through its compatible > string rather than as an AMBA device. > > Signed-off-by: Jie Gan > --- > .../devicetree/bindings/arm/qcom,coresight-tnoc.yaml | 16 ++-------------- > 1 file changed, 2 insertions(+), 14 deletions(-) Reviewed-by: Krzysztof Kozlowski Best regards, Krzysztof