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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ca37a7102esm23040315ad.6.2026.06.30.18.54.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jun 2026 18:54:33 -0700 (PDT) From: Jie Gan Date: Wed, 01 Jul 2026 09:53:43 +0800 Subject: [PATCH v4 3/5] arm64: dts: qcom: kaanapali: fix traceNoC probe issue Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260701-fix-tracenoc-probe-issue-v4-3-aefab449a470@oss.qualcomm.com> References: <20260701-fix-tracenoc-probe-issue-v4-0-aefab449a470@oss.qualcomm.com> In-Reply-To: <20260701-fix-tracenoc-probe-issue-v4-0-aefab449a470@oss.qualcomm.com> To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tingwei Zhang , Jingyi Wang , Jie Gan , Abel Vesa , Suzuki K Poulose , Mike Leach , James Clark , Leo Yan , Yuanfang Zhang , Abel Vesa , Alexander Shishkin Cc: 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 X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1782870847; l=1646; i=jie.gan@oss.qualcomm.com; s=20250909; h=from:subject:message-id; bh=UN1+XndgFoWu6KIBACkmLA4ik7BBH53rNgnE7Gg8Qy8=; b=sbrpn5D0WoIXPJr3xlIlgYYxZwy4hg09s34OElU6B/9iYKSPMpySzLDXd/hCsG1HtB0ZU+xsM Ni6Zc0tQ2r2AZ8fDB6S0i8TwGjUtr8JQhL/FuQGBVatYsLakUbb5bd/ X-Developer-Key: i=jie.gan@oss.qualcomm.com; a=ed25519; pk=3LxxUZRPCNkvPDlWOvXfJNqNO4SfGdy3eghMb8puHuk= X-Authority-Analysis: v=2.4 cv=Co2PtH4D c=1 sm=1 tr=0 ts=6a44735a cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=5VkFZXXe0QlYWD9W4eUA:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-ORIG-GUID: O2EaN7tVkoAlzCKPthLp9EITl60q_Z6W X-Proofpoint-Spam-Info: AW1haW4tMjYwNzAxMDAxOCBTYWx0ZWRfX3TWrZ1jDCh9r DLyGZL1fP/X83VvnUKdysRF9LvFs8P0VeKy1q+8sq0H4VyuFZHTQkwANqBwt7taOrzP7zCf26+c 9TWL3u/rQyCSerK1WUlCMvdIBhbW0iM= X-Proofpoint-GUID: O2EaN7tVkoAlzCKPthLp9EITl60q_Z6W X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzAxMDAxOCBTYWx0ZWRfXzKD0k2cJc5d1 t1h2hEl6CHT491XSeP83KxxnMTihBAz2BrXN/hKhR1hJWq4RikzdpJQ09WXi8YdWIwD9Wt3oRk1 9+TPXrdgTeA2eZTPbQUWfLOETd0rOGxtgA1dWdeVyI+otiBJ6/5CB3ckxyjZeQdbaT+I/RwLscm 4DShP6rwxNFMzQHva0Qyi/XUjOpZwV6uFbOSpDnA6xOJF2G5A1HJZrKEBV/o9pn7GZdFzPjscDv T7HUjGAnU/YDT+G1zruzAKW+gSKYJ074xn6pMh1hQb6mXt3SD1U+cE38S4pSm2MJG4hmdaCIpEb JiWLI9KCmKJomfpM35RLjOQv5Pa4N5DtJbbQJjgizyP4W7EMCuGOn2GKsN9nTz7LCY4PuU6aRbJ PXyMW+p0SHgSim6N1tdZXCSPOBuIuZ8Zgz2AEwQlQ6hulZgHkJtuZRSXXjQ9n88JdZWFu6W+s2t bSL4gFexpVtS1D0hUvg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-30_06,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 bulkscore=0 suspectscore=0 phishscore=0 spamscore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607010018 The traceNoC node used the "qcom,coresight-tnoc", "arm,primecell" compatible, which places the device on the AMBA bus. To bind an AMBA device, the bus first reads the peripheral and component ID registers (PID/CID) at the top of the device's register block and matches them against the primecell ID. On this platform the traceNoC does not expose a valid CID in that register, so the read never yields the expected primecell value, the AMBA match fails, and the device is left stuck in deferred probe indefinitely. The Aggregator TNOC is fully described by the "qcom,coresight-agtnoc" compatible, which binds via the platform driver by compatible string and does not rely on reading the primecell ID register at all. Switch the node to that standalone compatible so the device probes on hardware that does not expose a readable CID, while remaining an Aggregator TNOC that retains ATID functionality. Fixes: f73959d86c15 ("arm64: dts: qcom: kaanapali: add coresight nodes") Signed-off-by: Jie Gan --- arch/arm64/boot/dts/qcom/kaanapali.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/kaanapali.dtsi b/arch/arm64/boot/dts/qcom/kaanapali.dtsi index 7aa9653bd456..e98f4aa4b141 100644 --- a/arch/arm64/boot/dts/qcom/kaanapali.dtsi +++ b/arch/arm64/boot/dts/qcom/kaanapali.dtsi @@ -5004,7 +5004,7 @@ tpdm_pcie_rscc_out: endpoint { }; tn@111b8000 { - compatible = "qcom,coresight-tnoc", "arm,primecell"; + compatible = "qcom,coresight-agtnoc"; reg = <0x0 0x111b8000 0x0 0x4200>; clocks = <&aoss_qmp>; -- 2.34.1