From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: Konrad Dybcio <konrad.dybcio@somainline.org>
Cc: andersson@kernel.org, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, johan+linaro@kernel.org,
quic_jprakash@quicinc.com, linux-arm-msm@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
steev@kali.org
Subject: Re: [PATCH v2 12/12] arm64: dts: qcom: sc8280xp-x13s: Add thermal zone support
Date: Thu, 3 Nov 2022 17:42:28 +0530 [thread overview]
Message-ID: <20221103121228.GB8434@thinkpad> (raw)
In-Reply-To: <e46c817b-1a3b-d20c-22e7-a67b7684f17b@somainline.org>
On Thu, Nov 03, 2022 at 11:02:30AM +0100, Konrad Dybcio wrote:
>
> On 03/11/2022 06:50, Manivannan Sadhasivam wrote:
> > On Sat, Oct 29, 2022 at 04:29:05PM +0200, Konrad Dybcio wrote:
> > >
> > > On 29.10.2022 07:14, Manivannan Sadhasivam wrote:
> > > > Add thermal zone support by making use of the thermistor SYS_THERM6.
> > > > Based on experiments, this thermistor seems to reflect the actual
> > > > surface temperature of the laptop.
> > > >
> > > > For the cooling device, all BIG CPU cores are throttle down to keep the
> > > s/throttle/throttled
> > >
> > > Is it okay to let the 4xA78C run at full throttle in thermal emergencies though?
> > I don't get it. Can you elaborate?
>
> 8280xp has 4xA78C and 4xX1C. You only added the latter ones to the cooling
> map.
>
Right, that's because the first 4 cores doesn't contribute to thermal much and
thottling them doesn't yield any thermal gain.
Thanks,
Mani
>
> >
> > > > temperature at a sane level.
> > > >
> > > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > > > ---
> > > > .../qcom/sc8280xp-lenovo-thinkpad-x13s.dts | 46 +++++++++++++++++++
> > > > 1 file changed, 46 insertions(+)
> > > >
> > > > diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> > > > index ca77c19c6d0d..96e2fa72f782 100644
> > > > --- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> > > > +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> > > > @@ -29,6 +29,52 @@ backlight {
> > > > pinctrl-0 = <&edp_bl_en>, <&edp_bl_pwm>;
> > > > };
> > > > + thermal-zones {
> > > > + skin-temp-thermal {
> > > > + polling-delay-passive = <250>;
> > > > + polling-delay = <0>;
> > > > + thermal-sensors = <&pmk8280_adc_tm 5>;
> > > > +
> > > > + trips {
> > > > + skin_temp_alert0: trip-point0 {
> > > > + temperature = <55000>;
> > > > + hysteresis = <1000>;
> > > > + type = "passive";
> > > > + };
> > > > +
> > > > + skin_temp_alert1: trip-point1 {
> > > > + temperature = <58000>;
> > > > + hysteresis = <1000>;
> > > > + type = "passive";
> > > > + };
> > > > +
> > > > + skin-temp-crit {
> > > > + temperature = <73000>;
> > > Ouch, I didn't know we were serving burnt fingers at the cafeteria today :D
> > >
> > > Or maybe this just looks scary.. The laptop looks plastic, so maybe it won't cause instant
> > > burns?
> > >
> > 73c is what the reasonable number I came up with after some experiments. At
> > this point the temperature won't burn your finger but crossing this surely
> > would (that's what happening without this series).
>
> Ok, then I suppose it's fine. Thanks!
>
>
> Konrad
>
> >
> > Thanks,
> > Mani
> >
> > > Konrad
> > > > + hysteresis = <1000>;
> > > > + type = "critical";
> > > > + };
> > > > + };
> > > > +
> > > > + cooling-maps {
> > > > + map0 {
> > > > + trip = <&skin_temp_alert0>;
> > > > + cooling-device = <&CPU4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> > > > + <&CPU5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> > > > + <&CPU6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> > > > + <&CPU7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> > > > + };
> > > > +
> > > > + map1 {
> > > > + trip = <&skin_temp_alert1>;
> > > > + cooling-device = <&CPU4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> > > > + <&CPU5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> > > > + <&CPU6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> > > > + <&CPU7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> > > > + };
> > > > + };
> > > > + };
> > > > + };
> > > > +
> > > > vreg_edp_bl: regulator-edp-bl {
> > > > compatible = "regulator-fixed";
--
மணிவண்ணன் சதாசிவம்
next prev parent reply other threads:[~2022-11-03 12:12 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-29 5:14 [PATCH v2 00/12] sc8280xp-pmic updates and X13s thermal zone support Manivannan Sadhasivam
2022-10-29 5:14 ` [PATCH v2 01/12] dt-bindings: iio: qcom: adc7-pm8350: Allow specifying SID for channels Manivannan Sadhasivam
2022-10-29 22:07 ` Dmitry Baryshkov
2022-10-31 21:33 ` Rob Herring
2022-11-02 20:06 ` Krzysztof Kozlowski
2022-10-29 5:14 ` [PATCH v2 02/12] arm64: dts: qcom: sc8280xp-pmics: Add temp alarm for PM8280_{1/2} PMICs Manivannan Sadhasivam
2022-10-29 14:13 ` Konrad Dybcio
2022-10-29 5:14 ` [PATCH v2 03/12] arm64: dts: qcom: sc8280xp-pmics: Add thermal zones " Manivannan Sadhasivam
2022-10-29 14:13 ` Konrad Dybcio
2022-10-29 5:14 ` [PATCH v2 04/12] arm64: dts: qcom: sc8280xp-pmics: Add support for PMK8280 RESIN input Manivannan Sadhasivam
2022-10-29 14:15 ` Konrad Dybcio
2022-10-29 5:14 ` [PATCH v2 05/12] arm64: dts: qcom: sc8280xp-pmics: Add PMK8280 ADC7 block Manivannan Sadhasivam
2022-10-29 14:15 ` Konrad Dybcio
2022-10-29 14:17 ` Konrad Dybcio
2022-11-02 20:07 ` Krzysztof Kozlowski
2022-10-29 5:14 ` [PATCH v2 06/12] arm64: dts: qcom: sc8280xp-pmics: Add support for TM5 block in PMK8280 Manivannan Sadhasivam
2022-10-29 14:16 ` Konrad Dybcio
2022-10-29 5:14 ` [PATCH v2 07/12] arm64: dts: qcom: sc8280xp-x13s: Enable PMK8280 RESIN input Manivannan Sadhasivam
2022-10-29 14:16 ` Konrad Dybcio
2022-10-29 5:14 ` [PATCH v2 08/12] arm64: dts: qcom: sc8280xp-x13s: Add PMK8280 VADC channels Manivannan Sadhasivam
2022-10-29 14:18 ` Konrad Dybcio
2022-11-02 20:07 ` Krzysztof Kozlowski
2022-10-29 5:14 ` [PATCH v2 09/12] arm64: dts: qcom: sc8280xp-x13s: Add PM8280_{1/2} " Manivannan Sadhasivam
2022-10-29 14:20 ` Konrad Dybcio
2022-11-02 20:08 ` Krzysztof Kozlowski
2022-10-29 5:14 ` [PATCH v2 10/12] arm64: dts: qcom: sc8280xp-x13s: Add PMR735A VADC channel Manivannan Sadhasivam
2022-10-29 14:20 ` Konrad Dybcio
2022-11-02 20:08 ` Krzysztof Kozlowski
2022-10-29 5:14 ` [PATCH v2 11/12] arm64: dts: qcom: sc8280xp-x13s: Add PM8280_{1/2} ADC_TM5 channels Manivannan Sadhasivam
2022-10-29 14:21 ` Konrad Dybcio
2022-11-02 20:08 ` Krzysztof Kozlowski
2022-10-29 5:14 ` [PATCH v2 12/12] arm64: dts: qcom: sc8280xp-x13s: Add thermal zone support Manivannan Sadhasivam
2022-10-29 14:29 ` Konrad Dybcio
2022-10-29 19:07 ` Steev Klimaszewski
2022-11-03 5:50 ` Manivannan Sadhasivam
2022-11-03 10:02 ` Konrad Dybcio
2022-11-03 12:12 ` Manivannan Sadhasivam [this message]
2022-10-29 19:26 ` [PATCH v2 00/12] sc8280xp-pmic updates and X13s " Steev Klimaszewski
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