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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-hardening@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: sH4GaEYuLtQGWEr1OKHIxkB1gwEX5G3j X-Proofpoint-Spam-Info: AW1haW4tMjYwODI4MDExOCBTYWx0ZWRfX0r1zcCvyXEMD +wJ5hefENfYJBoaXSN8/D8s7Edj2yOT9X2udQ6SrVVpZeFPfceeuE4Tn22VgvvafMHuqd36ARZ6 4wAC9Namc8BWxR12KSOo04xLoFJSUZs= X-Authority-Analysis: v=2.4 cv=IPoyzAvG c=1 sm=1 tr=0 ts=6a918ffc cx=c_pps a=+D9SDfe9YZWTjADjLiQY5g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=aKGLMg70GXf6WMUK1bUA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=vmgOmaN-Xu0dpDh8OwbV:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI4MDExOCBTYWx0ZWRfX0pRcXKlTKiE/ C7PXgD7/YR734pz+tHQBJgZ78kMypfW7qtt1CLDCvUzBXA+z+JdpwvfUp/dwGUwCLR3vGID0NZQ +TcJAyT7drU1or6lHb3V+kbTefZD0+zaxAr2i0lU7lJ0yj/bkASPkIEdSGVeuegQDjaUJWZkQib /1JeygMepFO4Fsa4EA6dFXDzLvFMxzEmZN3mUJpNDz9sUOkY/rIfnoRKgVWCmjEQ9Foe6JYImz9 3meo/aYCNeLAEDZvgLUfuiyeXYCJzYxvPmFsCnZweiOxFFnPPgDXskEwky2do7vV86pRiSHXEy7 QWw5Ah7Is7kA8Wndan5vurgTdPsbjYmq6vXqDU6uU9vFvd+iXMpOytZxe16vrqWZhAPOO6NDGc9 g4/Q+TheMC/Utgbg4dbJwUKc64zqAgQg8Zly5MvGL9pTpeE84lPTTS8iAYYPOCE169CQjhzaoSF irEXZrgkyaq/wbfv+SQ== X-Proofpoint-ORIG-GUID: sH4GaEYuLtQGWEr1OKHIxkB1gwEX5G3j 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 priorityscore=1501 malwarescore=0 bulkscore=0 phishscore=0 impostorscore=0 lowpriorityscore=0 suspectscore=0 clxscore=1015 adultscore=0 spamscore=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