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Tue, 20 Oct 2026 01:11:18 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c40919c0402sm461340166b.61.2026.10.20.01.11.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 20 Oct 2026 01:11:17 -0700 (PDT) Message-ID: <40ca2a9c-55c0-43bb-bfa2-f6f94f35dbac@oss.qualcomm.com> Date: Tue, 20 Oct 2026 10:11:15 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/3] arm64: dts: qcom: hamoa-crd: Add thermal control To: Bjorn Andersson , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Abel Vesa References: <20260905-hamoa-sys-therm-v2-0-1cb8c958c981@oss.qualcomm.com> <20260905-hamoa-sys-therm-v2-2-1cb8c958c981@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260905-hamoa-sys-therm-v2-2-1cb8c958c981@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=a7WlZkSF c=1 sm=1 tr=0 ts=6ad72227 cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=EUspDBNiAAAA:8 a=4__AJpt3kqbA7IiQeHIA:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-ORIG-GUID: boSBbxCwsZEUnWOXsl_-p5ReFpm9G30w X-Proofpoint-GUID: boSBbxCwsZEUnWOXsl_-p5ReFpm9G30w X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIwMDAzMiBTYWx0ZWRfX/AM2+u0Gr6fu es4IHXS1YtFENSWcUE6PWExb/JOaojwXVT9yh5VEzmzDe4nlYqjhiWpwRwGrnh6/lCGcWbxTr6y jotfp2kYVJqH2/a+3ltbEo3OBTIVA05Wbwx6wSx8LyT17TLG1ij4bpecbLEz4Rh3JVtv0FezTty q8qRtKi2c6RI+xTtaZ2kvSvENHhBDV+qQDuwNZtPuTvbO95PGfmlv29tkEkNuWKNXzIfPPnkYwO 2sVHvXEX/mgvofFJ0T1oZzCo4X0RTe4JhVathJEFDcvWiXPIU7YKNzqA6z8bQABRD+HzI/nw3RL l+W64LuYlMmzbHr1laeBge6J0JNf4PqAi+ypF4BSWY1sTGSfK/FtRoa7eF6BNUZ8Td/xdR/kLoY eQP+EfspffT4gx2LqU306aCB5ii2gHgXGv4uBt/336PST92O9heTFFVAF4PbyDXVXIjkw4WeAwf fCvu4Y8ZVC+UdOvkh/Q== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIwMDAzMiBTYWx0ZWRfX9n8LesLHXxFP G8+VUUxJ8e7NVvz7pqTEJzpkha4xcsIGJOQzWxXsTtYRkfmtPtYyWvoqodc+BQzu5jFZgmvFdIV JybbHQDbz4lo3y/bSLEJBIbOBi9pt/w= 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=2026-10-20_01,2026-10-19_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 phishscore=0 lowpriorityscore=0 bulkscore=0 clxscore=1015 malwarescore=0 priorityscore=1501 adultscore=0 suspectscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610200032 On 9/5/26 5:05 AM, Bjorn Andersson wrote: > The "limits" hardware performs rapid thermal management of the CPU > cores, but during prolonged CPU usage the system's overall temperature > need to be further managed by software. > > The reference design provides seven "system thermistors", connected to > the PMK8550 VADC. Particularly interesting is the "keyboard hotspot > thermistor", which is wired up to sys_therm1. > > Use this to throttle the CPUs, in the same way that we're throttling > previous generation laptops based on "skin-temp". The trips are chosen > from those existing examples, but are comparable with the ACPI thermal > policy. > > While not used for cooling/throttling, also add the other thermal zones > for temperature reporting purposes. > > Enable thermal-monitor mode for all 7 channels in the ADC. > > Reviewed-by: Abel Vesa > Signed-off-by: Bjorn Andersson > --- A good start! Reviewed-by: Konrad Dybcio Konrad