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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ac678d2229sm616463a91.3.2026.10.13.18.23.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Oct 2026 18:23:56 -0700 (PDT) Message-ID: Date: Wed, 14 Oct 2026 09:23:52 +0800 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 3/4] arm64: dts: qcom: kaanapali: Add CoreSight nodes for APSS debug block To: Konrad Dybcio , Bjorn Andersson , Konrad Dybcio , Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jingyi Wang Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260922-add-etm-devices-for-multiple-qcom-platforms-v1-0-c2a8c3225a2e@oss.qualcomm.com> <20260922-add-etm-devices-for-multiple-qcom-platforms-v1-3-c2a8c3225a2e@oss.qualcomm.com> Content-Language: en-US From: Jie Gan In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE0MDAwNSBTYWx0ZWRfX0q1TkpYNw8cm CRfCXGplaH9kiuC/afkkmPhaRhclKWsALd1S0H/6mZcvkd6F0Fx+DK/g3hnb0UXFqyDIxEVbMLL t5J/9X0pUTvCayP2SYxHHBuXfIdPtJQZLkQRy5UzrscjiGfUMFojHF8bvzu6zayBKH2ywwpYeC2 /sQd5UDxZNSJQg/SbEywUVkzY51BPAm+25gU/7FcyS4A1JhYgA/ISdBcXzCUjVvHwoKWd9lCXwN p6hwd1sbFFaDNjz64yZE/uhVE5jLoh8cRBZfFVmncEAZFJ78o6AqQWgz2usjsMTVJsbISAG1n/l HPdrEymDUw+bMmpDaMB7cDjjEeyKuQgMtgc5IR0w54CBy2zREmJ8reppyi6TB2QpRzvfkTgDrIp ZB2V6dNMT2MzEFrfzqLprg1J5EvmwDxKTjc6KL9cvld3Jhwxg6v5ujuS14gyiEZrgc4q0Zvb2Zg vkYk5lDRZfJTX1jz1UQ== X-Authority-Analysis: v=2.4 cv=LPPz05W9 c=1 sm=1 tr=0 ts=6aced9af cx=c_pps a=vVfyC5vLCtgYJKYeQD43oA==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=EUspDBNiAAAA:8 a=ay6wXbw5ScRiw2kLOwEA:9 a=QEXdDO2ut3YA:10 a=rl5im9kqc5Lf4LNbBjHf:22 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE0MDAwNSBTYWx0ZWRfX4oP577xxGwV0 THfB9RMd9WUARqYA5I0JW/IKqww7uZGWGiUdXDFZ+xGA8ES/wYugnP6DFcdnJjxdPc3jYH0zdMo Dy+X5D5LmN2RE7J/lfuiJmBNx/WwBh8= X-Proofpoint-ORIG-GUID: FbBTR8VpIIq7S5xg_P2uqnfP5WZM3PXq X-Proofpoint-GUID: FbBTR8VpIIq7S5xg_P2uqnfP5WZM3PXq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-13_01,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 clxscore=1015 adultscore=0 malwarescore=0 phishscore=0 lowpriorityscore=0 spamscore=0 suspectscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610140005 On 10/13/2026 8:49 PM, Konrad Dybcio wrote: > On 9/22/26 12:35 PM, Jie Gan wrote: >> The APSS debug block is built with CoreSight devices like ETE, >> replicator, funnel and TMC ETF. Add dt nodes for these devices to enable >> ETM trace. >> >> The replicator, funnel and TMC ETF nodes in this block are physically >> powered by the CPU cluster power rail rather than by a dedicated always-on >> rail. Add a power-domains property referencing the cluster_pd domain to >> each of these nodes, so their power state is tied to the CPU cluster >> domain and the runtime PM core can power the domain on before the >> devices are accessed and let it be powered off otherwise. >> >> Signed-off-by: Jie Gan >> --- >> arch/arm64/boot/dts/qcom/kaanapali.dtsi | 567 ++++++++++++++++++++++++++++++++ >> 1 file changed, 567 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/qcom/kaanapali.dtsi b/arch/arm64/boot/dts/qcom/kaanapali.dtsi >> index 131fd2a16c54..d9313de53ee5 100644 >> --- a/arch/arm64/boot/dts/qcom/kaanapali.dtsi >> +++ b/arch/arm64/boot/dts/qcom/kaanapali.dtsi >> @@ -218,6 +218,110 @@ domain_ss3: domain-sleep-0 { >> }; >> }; >> >> + ete-0 { >> + compatible = "arm,embedded-trace-extension"; > > No power-domains for these too? ETM/ETE device is the debug device of the CPU, no power-domain property attached to the device and the power management operations relies on the CPU itself. I missed qcom,skip-power-up; for those nodes, ETE device should not check the power state of the device. Will send new version to address it. > > [...] > >> + tmc@1d029000 { >> + compatible = "arm,coresight-tmc", "arm,primecell"; >> + reg = <0x0 0x1d029000 0x0 0x1000>; >> + >> + clocks = <&aoss_qmp>; >> + clock-names = "apb_pclk"; >> + power-domains = <&cluster_pd>; > > Is there only being a single cluster_pd a mistake on kaanapali? > From psci map, KNP only has one cluster_pd shared among all CPUs. Hi Jingyi, Can you please help to comment this part? Thanks, Jie > The CPUs have a different Aff1 value in the MPIDR register, so one > would think there's 2 (also according to the cpu-map) > > Konrad