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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b983398d82dsm490430066b.62.2026.03.23.06.02.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 23 Mar 2026 06:02:31 -0700 (PDT) Message-ID: Date: Mon, 23 Mar 2026 14:02:29 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] arm64: dts: qcom: glymur: add coresight nodes To: Jie Gan , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tingwei Zhang Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260318-add-coresight-dt-nodes-for-glymur-v2-1-d76e08f21fa5@oss.qualcomm.com> <7972211e-d735-4401-ada9-b83c7b96b612@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <7972211e-d735-4401-ada9-b83c7b96b612@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=CYYFJbrl c=1 sm=1 tr=0 ts=69c139ea cx=c_pps a=R6oCqFB+Yf/t2GF8e0/dFg==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=M4mPnNHhtMrhvY3s-vwA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=TD8TdBvy0hsOASGTdmB-:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzIzMDEwMCBTYWx0ZWRfXzKqUw32JGXyz ISpI7Zyci5hJescY7cwBDhy0GnoiuzfmJPWKooWlCYjMGsxOu1RG3Y+UNMzUdZn0/643/e70kAW MBMCN83hufnJ/v+hZG9rBvU3mPnc2FqB9zJREzikTneAxg8fyshNWT432wEDGH0EmqEhcToMJ6M 9cMwZOpJqaURTeV0w5XiYpg2r97dPnu3Gn1s2bRQmjmnno94J8b113Ppm1WcUlX+ZNDFnGOtf9v 9/hq6Ft61ulG+7YbBh7q9SKDuMNqzjxTeRbaK5zbJicfMMaCOupX4gC8Gw9DBBu6X/IrmIFqrFU AOG3uk5mkTWuJC5JSclJUCh5KleDW4oBD4qUUb5uEz0fJNPKVaACeXLNQ5WH4L9/rdza/9DvUp5 UsvMaip+du+NPcCLnYSB+R6EMUh36iLPaEnd7F1coyk+CuhxX0Ep1BkSsSKim9o8eJM/xKGcKQQ GTmB5dzJbM8wc32JHjA== X-Proofpoint-GUID: E7UkcsHpkmj7x3vuxK6BMurOnR_03FKR X-Proofpoint-ORIG-GUID: E7UkcsHpkmj7x3vuxK6BMurOnR_03FKR X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-23_03,2026-03-20_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 spamscore=0 phishscore=0 lowpriorityscore=0 adultscore=0 malwarescore=0 bulkscore=0 impostorscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603230100 On 3/23/26 1:30 PM, Jie Gan wrote: > > > On 3/23/2026 7:05 PM, Konrad Dybcio wrote: >> On 3/18/26 12:42 PM, Jie Gan wrote: >>> Add CoreSight nodes to enable trace paths like TPDM->ETF/STM->ETF. >>> These devices are part of the AOSS, CDSP, QDSS, PCIe5, TraceNoc and >>> some small subsystems, such as GCC, IPCC, PMU and so on. >>> >>> Signed-off-by: Jie Gan >>> --- >>> Changes in V2: >>> 1. removed two cti devices due to GFX block is down >> >> i.e. "because GPU is not yet enabled"? > > Yeah, these CTI devices have clock issue for enabling due to the GPU block is not yet enabled. Do they need the GPU to be online, or a clock from GPU_CC, or maybe something else? >>>     - cti@11c42000 >>>     - cti@11c4b000 >>> 2. changes two TPDM devices to static: >>>     - tpdm-cdsp-cmsr >>>     - tpdm-cdsp-cmsr2 >> >> They were TPDM instances in v1. What's the reason for the change? > > These TPDMs havent clock source for accessing registers. We only need enable its ports to output trace data. So I have changed them to static-TPDM compatible. The registers are clearly physically there. Are you saying that we (currently?) can't enable the clock required to access them? Or is there a design defect that's preventing us from doing so? Konrad