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Date: Wed, 20 Feb 2019 14:48:31 +0530
From: Amit Kucheria <amit.kucheria@...aro.org>
To: Eduardo Valentin <edubezval@...il.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-arm-msm <linux-arm-msm@...r.kernel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Andy Gross <andy.gross@...aro.org>,
David Brown <david.brown@...aro.org>,
DTML <devicetree@...r.kernel.org>
Subject: Re: [PATCH v1 04/12] arm64: dts: msm8996: thermal: Add temperature
sensors near major peripherals
On Wed, Feb 20, 2019 at 6:55 AM Eduardo Valentin <edubezval@...il.com> wrote:
>
> On Mon, Feb 18, 2019 at 06:05:18PM +0530, Amit Kucheria wrote:
> > msm8996 has a total of 21 temperature sensors. Populate DT with
> > information about them.
> >
> > There are 2 sensors on each of the cpus - one on the top, the other
> > below (we only expose one on the top in DT for now). For the GPU, we
> > expose both, the one on the top and the one below.
> >
> > Depending on the version of the silicon, sensor 2 is either placed near
> > the L3 cache or the venus video decoder. It would've been nice to be
> > able to be version-specific but we don't have DTs that differentiate the
> > two versions of silicon yet.
> >
> > Signed-off-by: Amit Kucheria <amit.kucheria@...aro.org>
> > ---
> > arch/arm64/boot/dts/qcom/msm8996.dtsi | 98 +++++++++++++++++++++++++++
> > 1 file changed, 98 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
> > index ae6e9f0778f0..8e36a39e1386 100644
> > --- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
> > @@ -237,6 +237,104 @@
> > };
> > };
> > };
> > +
> > + gpu-thermal-top {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens1 6>;
> > +
> > + trips {
> > + gpu1_alert0: trip-point@0 {
> > + temperature = <75000>;
> > + hysteresis = <2000>;
> > + type = "passive";
>
> What is the cooling map for this?
I'm working on it. Will send out an update.
> > + };
> > +
> > + gpu1_crit: gpu_crit {
> > + temperature = <95000>;
> > + hysteresis = <2000>;
> > + type = "critical";
> > + };
> > + };
> > + };
> > +
> > + gpu-thermal-bottom {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens1 7>;
> > +
> > + trips {
> > + gpu2_alert0: trip-point@0 {
> > + temperature = <75000>;
> > + hysteresis = <2000>;
> > + type = "passive";
> > + };
> > +
> > + gpu2_crit: gpu_crit {
> > + temperature = <95000>;
> > + hysteresis = <2000>;
> > + type = "critical";
> > + };
> > + };
> > + };
> > +
> > + m4m-thermal {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens0 1>;
> > + };
> > +
> > + l3_or_venus-thermal {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens0 2>;
> > + };
> > +
> > + cluster0-l2-thermal {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens0 7>;
> > + };
> > +
> > + cluster1-l2-thermal {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens0 12>;
> > + };
> > +
> > + camera-thermal {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens1 1>;
> > + };
> > +
> > + q6-dsp-thermal {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens1 2>;
> > + };
> > +
> > + mem-thermal {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens1 3>;
> > + };
> > +
> > + modemtx-thermal {
> > + polling-delay-passive = <250>;
> > + polling-delay = <1000>;
> > +
> > + thermal-sensors = <&tsens1 4>;
> > + };
> > };
> >
> > timer {
> > --
> > 2.17.1
> >
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