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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-ca5af6df87fsm4517611a12.5.2026.07.09.19.40.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Jul 2026 19:40:12 -0700 (PDT) From: Jie Gan Date: Fri, 10 Jul 2026 10:39:02 +0800 Subject: [PATCH v6 3/5] arm64: dts: qcom: kaanapali: bind traceNoC on the platform bus 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: <20260710-fix-tracenoc-probe-issue-v6-3-41eb36fef8d9@oss.qualcomm.com> References: <20260710-fix-tracenoc-probe-issue-v6-0-41eb36fef8d9@oss.qualcomm.com> In-Reply-To: <20260710-fix-tracenoc-probe-issue-v6-0-41eb36fef8d9@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=1783651186; l=1634; i=jie.gan@oss.qualcomm.com; s=20250909; h=from:subject:message-id; bh=4MVQmgwxUQUw39D/a4v3zOkEzV18aEDsQ8FTgHlTgXk=; b=9id1mYjoy80wRtGxcFyPA7kI5SvnAWvY6ixcWCAoVlNUvjuYNtKp78orzdxBYjBm3CXiuwuyC YYkFpe+JU/eBbIMC4Qiu2TzEhjOIALL95aS8NE6B/Vnki47ITGNGYJF X-Developer-Key: i=jie.gan@oss.qualcomm.com; a=ed25519; pk=3LxxUZRPCNkvPDlWOvXfJNqNO4SfGdy3eghMb8puHuk= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzEwMDAyMyBTYWx0ZWRfXy0pL1vxQ5al4 teRkr/unmmUia0MPTy9umYSsfHiOwApX8R9al9i84xu2/gWkGWlxmkTdX/zkDn+cJpclhuDF6mv M3seBjOmo77VBV0do32xkayqymTuG0UKOeqmfGl753DXJZ52D6Mcrn/VdXIBT4ljKyyDFnw3Esq CJSHwlkTNg55JuT4ar5ltIa+N1vEAFpYgVy6MOgxTjewg4HH/i38GH7D7zALFL1shZpLrsKArmd Dy4p9JMxrE8AMXb8UrFg2txAC2HPPj6qGFlC2cLZYwEyUOgTn/fgWPyZ0CC6kXUeOow+BU0jRvG AStydi0ZOI9YpcVl/lTyQhxHPWImHLAXvRZFc0CsZgTNfhdfHEqhZmxJ2PQ+DOTHrjUM+y5et6m LiouT6mwhyfez0dYeM3V8J+2TW1Pna1gCrieve9gB8bzDU/WLJR6/2LCNRk8IY8lIaBIyzyFNcQ ekvqg9d8j8jrUeN3/eg== X-Authority-Analysis: v=2.4 cv=ZcMt8MVA c=1 sm=1 tr=0 ts=6a505b8e cx=c_pps a=rEQLjTOiSrHUhVqRoksmgQ==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=7Rut49xxg77_icr6qwgA:9 a=QEXdDO2ut3YA:10 a=2VI0MkxyNR6bbpdq8BZq:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzEwMDAyMyBTYWx0ZWRfX2A0D0J91AZ5T 50S4wG7ve/wKGhoGX/cxPiBGysGw3KcU5AUw/RRtnDQXSk3f1N6y2JRZygUHWtc+uBBmkFwCc8R jNWub5A/M45ss96DXR8HpzV7MB1jyqE= X-Proofpoint-GUID: sLgarM2jfN5hkhjAiHQlyPJfwWS8TOUK X-Proofpoint-ORIG-GUID: sLgarM2jfN5hkhjAiHQlyPJfwWS8TOUK X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-09_04,2026-07-09_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 lowpriorityscore=0 malwarescore=0 bulkscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 phishscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607100023 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") 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..5d0e7e8c2e58 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-tnoc"; reg = <0x0 0x111b8000 0x0 0x4200>; clocks = <&aoss_qmp>; -- 2.34.1