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 6969CC43458 for ; Fri, 10 Jul 2026 07:03:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ffR7ZryagVGOEuQIJ783LXqlEOLErcxNTF8ceIZ6QJs=; b=1qqplvx4dhvwgxEWVvXnyRMjJ6 3wTTl5qBpUDHOtKJ8dmaRoBCKozuBJilwxHDUvCIj1RhMxQ90U2vZ21B2UDWC1edVC4RIDk6ek1KK lwLUA7D+ZOsBjyJ7UPMU4x81bmtkoWMettzqtnte4CF7uqCHfJIPzBg6BJbaAo4Kc6xtxM/oH76in JloMr8dADD8wGHAI8A9iggwHuWojNsUaUBKKgL7MLhM5swedhN7oh19/Qqw88rQ14S+dRhujN82X6 Nav1ZozlTRH8/VTzxPfg8jM3cFCHiQcE6W/FkL6f2yWqSkImWv2TehnzBg+T1isPUGleY5Jvkvmji 17FnCCog==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wi5Gw-00000004Jia-0emC; Fri, 10 Jul 2026 07:03:42 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wi5Gv-00000004Ji5-0A72 for linux-arm-kernel@lists.infradead.org; Fri, 10 Jul 2026 07:03:41 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 818334388C; Fri, 10 Jul 2026 07:03:40 +0000 (UTC) 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> 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> 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 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