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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2edb6e0d5c0sm3148065ad.71.2026.11.09.17.21.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2026 17:21:55 -0800 (PST) From: Jie Gan Date: Tue, 10 Nov 2026 09:21:16 +0800 Subject: [PATCH v7 3/5] arm64: dts: qcom: kaanapali: bind traceNoC on the platform bus X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261110-fix-trace-noc-probe-issue-v7-3-2f06905c77fe@oss.qualcomm.com> References: <20261110-fix-trace-noc-probe-issue-v7-0-2f06905c77fe@oss.qualcomm.com> In-Reply-To: <20261110-fix-trace-noc-probe-issue-v7-0-2f06905c77fe@oss.qualcomm.com> To: Suzuki K Poulose , Mike Leach , James Clark , Leo Yan , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tingwei Zhang , Yuanfang Zhang , Alexander Shishkin , Bjorn Andersson , Konrad Dybcio , Abel Vesa , Jingyi Wang Cc: Jie Gan , linux-arm-msm@vger.kernel.org, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1794273690; l=1695; i=jie.gan@oss.qualcomm.com; s=20250909; h=from:subject:message-id; bh=e/VC4qEgu082rNQ9Rv5+87S6VUZB333iuAfgirzakG8=; b=sm+yNpYvjBZ286lnnvRQiD3nOrJzYp7GbSRJ7p4Rm2cr7rwt/kNMtAoD0o37S0+cCRxGJ9+S8 SI2iKn7wv/iAsCnbhvHT4fUeGESSmnxyk2yAjomX7n7GjuQHatL/B4b X-Developer-Key: i=jie.gan@oss.qualcomm.com; a=ed25519; pk=3LxxUZRPCNkvPDlWOvXfJNqNO4SfGdy3eghMb8puHuk= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTEwMDAwNSBTYWx0ZWRfXwoVznPvXZym0 rhv1YbWyavohgNKlBYTDRAxXWu4Vajw2ebpPOydFVX4nm5uue1Xnlxa9pKGa6jhKjumqOA93UDz A0IMzfO5leX48av/mdLECSEq7W8mlPPy+TrFo1gmsq6vuykZaYPSWovd8yvh1hnwBVoaGjaWBrP UHMzuCtzIt5PYHBb2uNf9kGOT1B6d4RPs+UgkPZy32fnJD/YtQf5/j//teY4hKYsZZH6EzFyDkl 5Ih8//z6FZjSQcInZ+D6dTK4W01QH26yXhTulobh1RFvced8AYPvnWNye3bMmoXiaWBIX/Trnfo DmNNUza6RRPk4Cai4ZSPHReuouu90MAKxbbVm2ZlmxgDONEAgqlkf3y8bFdO9C0IPfRpCLEm1zt WkxNZw4aHwXB64X5lx+Vo4MHm5tFl3vGJuJ0DcZxNvc2bJ9fbSwM3dF+tsSVCPr7hcDXTzNQQSI aZ6plVBEwatGrXp2J6A== X-Authority-Analysis: v=2.4 cv=DZuCOftW c=1 sm=1 tr=0 ts=6af271b4 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=7Rut49xxg77_icr6qwgA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-GUID: Bjl0pPJxpeamqTV-AxTHs09ZnQ_v_PSm X-Proofpoint-ORIG-GUID: Bjl0pPJxpeamqTV-AxTHs09ZnQ_v_PSm X-Proofpoint-Spam-Info: AW1haW4tMjYxMTEwMDAwNSBTYWx0ZWRfX7vcUwD11kfAw luNck/PEUzKGbmM2l55IFt6VK3TiwTTGp/gOvq7zRO3Pve3EKmOCOBsZOMuetF3/wdEa90rm6Li Chi9b7UHX/sITGkZJoqUmcR8ae0jOS8= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-10_01,2026-11-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 phishscore=0 malwarescore=0 adultscore=0 impostorscore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611100005 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 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. The traceNoC exposes the CID registers, but the Component ID value returned by the hardware is 0x00000000 instead of a valid AMBA Component ID, so the match never succeeds, the AMBA probe fails, and the device is left stuck in deferred probe indefinitely. Drop the "arm,primecell" entry and use the standalone "qcom,coresight-tnoc" compatible, which binds via the platform driver by compatible string and does not rely on the component ID register at all. This lets the device probe on hardware that does not return a valid CID, while remaining an Aggregator TNOC that retains ATID functionality. Fixes: f73959d86c15 ("arm64: dts: qcom: kaanapali: add coresight nodes") Reviewed-by: Konrad Dybcio 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 e48a179d0722..de135eee0aed 100644 --- a/arch/arm64/boot/dts/qcom/kaanapali.dtsi +++ b/arch/arm64/boot/dts/qcom/kaanapali.dtsi @@ -5414,7 +5414,7 @@ tpdm_pcie_rscc_out: endpoint { }; tn@111b8000 { - compatible = "qcom,coresight-tnoc", "arm,primecell"; + compatible = "qcom,coresight-tnoc"; reg = <0x0 0x111b8000 0x0 0x4200>; clocks = <&aoss_qmp>; -- 2.34.1