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Mon, 02 Nov 2026 03:11:34 -0800 (PST) Received: from [192.168.226.248] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c4cd291a96csm140778066b.13.2026.11.02.03.11.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Nov 2026 03:11:33 -0800 (PST) Message-ID: Date: Mon, 2 Nov 2026 12:11:30 +0100 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 3/3] arm64: dts: qcom: glymur: Add EC thermal zones To: Manaf Meethalavalappu Pallikunhi , Anvesh Jain P , Sibi Sankar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Hans de Goede , =?UTF-8?Q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org References: <20260928-ec_thermistor_support-v1-0-d9c1bae4cd0d@oss.qualcomm.com> <20260928-ec_thermistor_support-v1-3-d9c1bae4cd0d@oss.qualcomm.com> <5d84ee1b-a765-4d6c-ab01-ca1a06a0e3d0@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; 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>>>> +        thermal-sensors = <&ec 2>; >>>> + >>>> +        trips { >>>> +            trip-point0 { >>>> +                temperature = <90000>; >>> This is *really* hot! >>> >> >> The 90°C trip value was suggested by thermal team(Manaf Meethalavalappu >> Pallikunhi ). We are open to using a >> lower value if this is too high for the keyboard and back-cover sensors. > > These sensors are intended to be controlled primarily from userspace by the thermal governor in thermald, through the powercap sysfs interface [1]. We do not plan to add cooling bindings for these thermal zones. > > Based on discussions with the tuning team, we agreed on a hot-trip threshold of 90°C for these sensors. > > [1] https://github.com/intel/thermal_daemon/pull/614/commits/7f3dd62353e039957e52eeb40c67ec388d543ebe If you never reach the userspace (e.g. because you're stuck in initfs) or if the distro doesn't ship thermald, you risk physically harming the user by explicitly allowing the (metal) back cover to go to 90C. Konrad