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Thu, 30 Jul 2026 23:01:30 -0700 (PDT) X-Received: by 2002:a05:6a00:12cb:b0:848:80ec:5d2 with SMTP id d2e1a72fcca58-84ed6f02d49mr605895b3a.51.1785477689968; Thu, 30 Jul 2026 23:01:29 -0700 (PDT) Received: from [10.217.199.117] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84ed5deb8ebsm311596b3a.40.2026.07.30.23.01.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 30 Jul 2026 23:01:29 -0700 (PDT) Message-ID: <548b30dd-915f-42ae-896d-3ab8c955b0f2@oss.qualcomm.com> Date: Fri, 31 Jul 2026 11:31:21 +0530 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 v6 9/9] arm64: dts: qcom: hamoa: Enable CDSP cooling To: Daniel Lezcano , Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Conor Dooley , 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, Dipa Ramesh Mantre , Dmitry Baryshkov References: <20260727-b4-qmi-tmd-v6-0-973cd3a226af@oss.qualcomm.com> <20260727-b4-qmi-tmd-v6-9-973cd3a226af@oss.qualcomm.com> <0f56d22d-437d-409a-852f-9fbf4e303284@oss.qualcomm.com> Content-Language: en-US From: Gaurav Kohli In-Reply-To: <0f56d22d-437d-409a-852f-9fbf4e303284@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYwNzMxMDAzOSBTYWx0ZWRfXzYUchxUhFc2I TBXmJP5KO7EM7ROKgQEaWMeifVq8igggk9tjmTzjuhaG/R0HWnvx+hblbRHS5FFWfAjNy0DWNDl IAMko2/KKCgPiH/jKP5/JU9ZdVxnFBA= X-Proofpoint-GUID: 4410Zjkh8ufuBJomrsS_3rENdFsJtR0R X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzMxMDAzOSBTYWx0ZWRfX589qALoFQMvJ xvFQJEo6XvZiOY669/e0SOyAnQPGNUnXEPvzVc8LUzMrhC49Ea2+FTghLPFAcPJBrqr9Tx0OMOC YPwAnhpQkH6xyuZZEOwu9msxEgmYT+ZAMC8x+to3uVglXauxmWtCyNtKdRsVSnGIqnljiskoEzL hBuWThySzI+th2LSOR1vAX7zxmZOOx3SAUIkH1bqtCcCMqYQFlD68H0czp53OK69zlqCze5pKyS v4jxn5/0cCOTG0jCMKxueVOkyAPt90aLBYPETvByJ+l88JeMt0bH2S+T7YnJ4N934Vo/uihxsmW auTO723a7zzTh5d0fXeglEYJz4ztEPdbPlTRAL8dx4/SSUngEduhivEkX/eLkU47jFH7CXM7kAY YuqrUFUTJXsMH2oK2LOekxigJ/x/pK0T/xS3CFZkWUgXbrRDbG5t+zlG/4H8FPRqP9gaD2nj/4F Uli1pUVD1AN+5w8U/PQ== X-Authority-Analysis: v=2.4 cv=DtFmPm/+ c=1 sm=1 tr=0 ts=6a6c3a3b cx=c_pps a=WW5sKcV1LcKqjgzy2JUPuA==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=couP0MF0vw6ipDBTzhAA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=OpyuDcXvxspvyRM73sMx:22 X-Proofpoint-ORIG-GUID: 4410Zjkh8ufuBJomrsS_3rENdFsJtR0R X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-31_02,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 priorityscore=1501 suspectscore=0 lowpriorityscore=0 clxscore=1015 malwarescore=0 adultscore=0 phishscore=0 bulkscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607310039 On 7/30/2026 10:40 PM, Daniel Lezcano wrote: > On 7/27/26 16:22, Gaurav Kohli wrote: >> From: Dipa Ramesh Mantre >> >> Unlike the CPU, the CDSP does not throttle its speed automatically >> when it reaches high temperatures in hamoa. >> >> Set up CDSP cooling for both instances by throttling the cdsp, when >> it reaches 95°C. >> >> Add polling-delay-passive so the governor periodically evaluates >> the zone during passive cooling and steps up cooling levels when >> temperature stabilizes below the next trip. >> >> Signed-off-by: Dipa Ramesh Mantre >> Reviewed-by: Dmitry Baryshkov >> Signed-off-by: Gaurav Kohli >> --- >>   arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 32 +++++++++++++++ >>   arch/arm64/boot/dts/qcom/hamoa.dtsi        | 63 ++++++++++++++++++++ >> ++++++++++ >>   2 files changed, 95 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts b/arch/arm64/ >> boot/dts/qcom/hamoa-iot-evk.dts >> index 9fa86bb6438e..a146be1cb5fb 100644 >> --- a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts >> +++ b/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts >> @@ -1684,4 +1684,36 @@ trip-point0 { >>               }; >>           }; >>       }; >> + >> +    nsp0-thermal { >> +        trips { >> +            trip-point1 { >> +                temperature = <105000>; >> +            }; >> +        }; >> +    }; >> + >> +    nsp1-thermal { >> +        trips { >> +            trip-point1 { >> +                temperature = <105000>; >> +            }; >> +        }; >> +    }; >> + >> +    nsp2-thermal { >> +        trips { >> +            trip-point1 { >> +                temperature = <105000>; >> +            }; >> +        }; >> +    }; >> + >> +    nsp3-thermal { >> +        trips { >> +            trip-point1 { >> +                temperature = <105000>; >> +            }; >> +        }; >> +    }; > > From thermal-zones.yaml: thanks for review, actually this is overwriting temperature with 105, so other properties are coming from hamoa.dtsi. > >     ... > >     required: >       - temperature >       - hysteresis >       - type > >     ... > > >