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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-pm@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: RNrGd5j5gH_5lDgKPHqnzAK_1L_2Smu3 X-Proofpoint-Spam-Info: AW1haW4tMjYwODI4MDExOCBTYWx0ZWRfX8gL9lIB40UAn igenv4preEJV183npjpObhhGm9Q22BzS8njQ28Fm2vbZcltb7gJshkwn4HWDf8i90U18Rp5wq0r wRgDD9pXnaWD6N6SgIEq7LxDErr60Bk= X-Authority-Analysis: v=2.4 cv=KPpqylFo c=1 sm=1 tr=0 ts=6a918ffc cx=c_pps a=1Os3MKEOqt8YzSjcPV0cFA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=aKGLMg70GXf6WMUK1bUA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=hhpmQAJR8DioWGSBphRh:22 X-Proofpoint-ORIG-GUID: RNrGd5j5gH_5lDgKPHqnzAK_1L_2Smu3 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI4MDExOCBTYWx0ZWRfX2yKBK12mmDKL mwO5wxQF90eIsiQBaspnMDQeSxweuPQLepaawMpML7jn0QBMdErd2WQv//a4GTuw2LIRVmBnLAo WleenOFPmbKr1CKFe5QO6L0s30CcUDoMNNiGkIEeZ3wHwKfD2kyPN+7k7fDqMOjapoNWW/SrsvZ /JttONneV8ajrJ9KYGXyaZIE9hhHWZwO8x7Uy+jHDTVM+l7vzOw147xgJq33zcHmtNcFSYe2jlz O5unmseM1sFIfaPT6gxhJqjAJTQfkREYv4MDhh9TMPjg98Wv2Ss+hqTmeQ6stweor95erPM5wb5 IAEEZ9Pe+jaHo3V5nf7jboq+eSadbXxJhdW1aUpTsH8ycvQVEHzpUMhgTswndZATWfQ6UJSeBEA NiZ1qjuTjjBj9o2pvK0hsY+iH5fh7mdGXbMqw5NSVxbioXs4bx/nx7lM3Xw3YefrjWuMbHV5d94 QjcF7AciN+lLiAomKdg== 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 malwarescore=0 priorityscore=1501 suspectscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 spamscore=0 adultscore=0 bulkscore=0 phishscore=0 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