From: Jie Gan <jie.gan@oss.qualcomm.com>
To: Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Tingwei Zhang <tingwei.zhang@oss.qualcomm.com>,
Jingyi Wang <jingyi.wang@oss.qualcomm.com>,
Jie Gan <jie.gan@oss.qualcomm.com>,
Abel Vesa <abel.vesa@oss.qualcomm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Mike Leach <mike.leach@arm.com>,
James Clark <james.clark@linaro.org>, Leo Yan <leo.yan@arm.com>,
Yuanfang Zhang <yuanfang.zhang@oss.qualcomm.com>,
Abel Vesa <abelvesa@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
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: [PATCH v6 5/5] arm64: dts: qcom: glymur: use Aggregator TNOC compatible
Date: Fri, 10 Jul 2026 10:39:04 +0800 [thread overview]
Message-ID: <20260710-fix-tracenoc-probe-issue-v6-5-41eb36fef8d9@oss.qualcomm.com> (raw)
In-Reply-To: <20260710-fix-tracenoc-probe-issue-v6-0-41eb36fef8d9@oss.qualcomm.com>
The traceNoC node is the system-level Aggregator TNOC, so it must own a
valid ATID that tags the whole aggregation path. It was marked compatible
with "qcom,coresight-itnoc", an Interconnect TNOC, which is never assigned
an ATID. As a result the aggregator had no trace ID and could not tag the
merged trace.
An Interconnect TNOC is a subsystem-level aggregator: it merges trace from
the ATB sources within its subsystem (TPDMs and other ATB masters) and
forwards the combined stream to the system-level Aggregator TNOC. It
carries no ATID of its own, because the Aggregator TNOC downstream in the
path already owns the ATID.
Switch the node to "qcom,coresight-tnoc" so it is described as the
Aggregator TNOC it is and is assigned a system trace ID. Rename the node
to "tn" and use the "apb_pclk" clock name as required by the Aggregator
TNOC binding.
Fixes: 1f7d0c42a08d ("arm64: dts: qcom: glymur: add coresight nodes")
Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/glymur.dtsi | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/glymur.dtsi b/arch/arm64/boot/dts/qcom/glymur.dtsi
index 20b49af7298e..0c04dca5e557 100644
--- a/arch/arm64/boot/dts/qcom/glymur.dtsi
+++ b/arch/arm64/boot/dts/qcom/glymur.dtsi
@@ -6038,12 +6038,12 @@ qm_tpdm_out: endpoint {
};
};
- itnoc@11200000 {
- compatible = "qcom,coresight-itnoc";
+ tn@11200000 {
+ compatible = "qcom,coresight-tnoc";
reg = <0x0 0x11200000 0x0 0x3c00>;
clocks = <&aoss_qmp>;
- clock-names = "apb";
+ clock-names = "apb_pclk";
in-ports {
#address-cells = <1>;
--
2.34.1
next prev parent reply other threads:[~2026-07-10 2:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-10 2:38 [PATCH v6 0/5] Fix traceNoC probe issue on multiple QCOM platforms Jie Gan
2026-07-10 2:39 ` [PATCH v6 1/5] dt-bindings: arm: coresight-tnoc: Bind on platform bus instead of AMBA Jie Gan
2026-07-10 7:03 ` Krzysztof Kozlowski
2026-07-10 2:39 ` [PATCH v6 2/5] coresight: tnoc: Bind Aggregator TNOC on the platform bus Jie Gan
2026-07-10 8:40 ` Leo Yan
2026-07-10 2:39 ` [PATCH v6 3/5] arm64: dts: qcom: kaanapali: bind traceNoC " Jie Gan
2026-07-10 9:49 ` Konrad Dybcio
2026-07-10 2:39 ` [PATCH v6 4/5] arm64: dts: qcom: sm8750: " Jie Gan
2026-07-10 9:49 ` Konrad Dybcio
2026-07-10 2:39 ` Jie Gan [this message]
2026-07-10 9:50 ` [PATCH v6 5/5] arm64: dts: qcom: glymur: use Aggregator TNOC compatible Konrad Dybcio
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