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Fri, 28 Aug 2026 06:41:15 -0700 (PDT) X-Received: by 2002:ac5:c89a:0:b0:5bd:7446:e3ff with SMTP id 71dfb90a1353d-5c680ea208emr903882e0c.0.1787924475167; Fri, 28 Aug 2026 06:41:15 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3a30559cfccsm3004681fa.40.2026.08.28.06.41.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 28 Aug 2026 06:41:14 -0700 (PDT) Message-ID: Date: Fri, 28 Aug 2026 15:41:06 +0200 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 v8 8/9] arm64: dts: qcom: monaco: Enable CDSP cooling To: Gaurav Kohli , Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Daniel Lezcano , Amit Kucheria , Konrad Dybcio , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Manivannan Sadhasivam , Kees Cook , "Gustavo A. R. Silva" , cros-qcom-dts-watchers@chromium.org Cc: linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-hardening@vger.kernel.org, manaf.pallikunhi@oss.qualcomm.com, Dmitry Baryshkov References: <20260809-b4-qmi-tmd-v8-0-b15d47adc379@oss.qualcomm.com> <20260809-b4-qmi-tmd-v8-8-b15d47adc379@oss.qualcomm.com> <01cd0d90-2908-42cb-9ae8-29828d4c03a0@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: vMT6ep9U_ZIkvJ2LIFtyT4dplzj6rafV X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI4MDExOCBTYWx0ZWRfXxRtGa3IGYn3f p2NQ8seaFJCRz9t7V+nwXWL0m9MDFNvJepyIr/B/YhzNKkNUf/vvzhH4BP0AxMoc8Ay86Fhp7jt MSkdaocfTV2Sz/w3S9JfAgn1GmRwk4D7rwfR0otAXK81k8Lpmd3bFHoFlpqKma6WQ5MLQt7mnMB gLmox1qpCzY70P+vgsLRGKKcRX6Db4poFbRA0gkTQzd3bafGek+XLW6UCw4RLc84vcXXY14mFzR DcHrDYfXq366abMvDC+Ck/S5yda7QR6KCssO5SMnCIcBQpBYq3IUG3IqnvAukM5GiCYm73bZXfb uA/noZ4RGUdI0s+xEGCICUfg3yjEd6+wjdiwz3Vu10IWK9AgNNNGtv/FQMgFxnoejG8mpvcfHq6 AMbgJRdJQK42dvNgZ/q20TjNCpGrsLUFCXN+A/D5iqgBx6WzCxw4uJEBKFmSB6QHX+SM040AfeG SVFmvkbQc/3Mfpl6m/g== X-Proofpoint-ORIG-GUID: vMT6ep9U_ZIkvJ2LIFtyT4dplzj6rafV X-Proofpoint-Spam-Info: AW1haW4tMjYwODI4MDExOCBTYWx0ZWRfX+EDuOY5clSLf +lrEB/iVcyNFho+B9MCabwGredc+qdRiC1XxDeJNtbIDRxXWHc7mJqN2PioFO2ucz89C+2gO50v ntwHZP/Fjhc1d8X2R1M7QWYeVtW1HyY= X-Authority-Analysis: v=2.4 cv=RoP16imK c=1 sm=1 tr=0 ts=6a918ffc cx=c_pps a=wuOIiItHwq1biOnFUQQHKA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=aKGLMg70GXf6WMUK1bUA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=XD7yVLdPMpWraOa8Un9W:22 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=2026-08-28_04,2026-08-27_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 phishscore=0 suspectscore=0 impostorscore=0 malwarescore=0 spamscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608280118 On 8/25/26 2:25 PM, Gaurav Kohli wrote: > > > On 8/24/2026 7:49 PM, Konrad Dybcio wrote: >> On 8/9/26 2:29 PM, Gaurav Kohli wrote: >>> Unlike the CPU, the CDSP does not throttle its speed automatically >>> when it reaches high temperatures in monaco. >> >> [...] >> >>>           nsp-0-0-0-thermal { >>> +            polling-delay-passive = <200>; >> >> ..and here it's 200 - I really think there should be a single value >> that makes sense, this seems no less than random > > Thanks for the review, Konrad. > > All targets added in this series use polling-delay-passive = <200> except Lemans, where the DTS already has polling-delay-passive = <10>. This series only adds the cooling maps there. > > As per internal profiling, 200 ms was chosen for remoteproc/QMI-based cooling. I can send a separate follow-up patch to normalize Lemans to 200 ms as well. I'm fine with a profiled value that's different between platforms if it's really beneficial, but it should be made explicit that it's right. If you believe the current settings can be improved, I'm all for it. Konrad