Re: [PATCH 3/3] arm: dts: thermal: add thermal/auxadc node.

[Matthias Brugger]

On 15/08/16 09:14, dawei chien wrote:
> Hi Matthias,
>
> On Thu, 2016-08-11 at 17:51 +0200, Matthias Brugger wrote:
> > On 07/07/16 11:06, Dawei Chien wrote:
> > > This adds the thermal controller and auxadc nodes
> > > to the Mediatek MT2701 dtsi file.
> > >
> > > Signed-off-by: Dawei Chien <dawei.chien@xxxxxxxxxxxx>
> > > ---
> > > This patch depned on:
> > > https://patchwork.kernel.org/patch/9213545/
> > > ---
> > >  arch/arm/boot/dts/mt2701.dtsi |   43 +++++++++++++++++++++++++++++++++++++++++
> > >  1 file changed, 43 insertions(+)
> > >
> > > diff --git a/arch/arm/boot/dts/mt2701.dtsi b/arch/arm/boot/dts/mt2701.dtsi
> > > index 2ac8b50..0834a23 100644
> > > --- a/arch/arm/boot/dts/mt2701.dtsi
> > > +++ b/arch/arm/boot/dts/mt2701.dtsi
> > > @@ -77,6 +77,36 @@
> > >  		#clock-cells = <0>;
> > >  	};
> > >
> > > +	thermal-zones {
> > > +		cpu_thermal: cpu_thermal {
> > > +			polling-delay-passive = <1000>; /* milliseconds */
> > > +			polling-delay = <1000>; /* milliseconds */
> > > +
> > > +			thermal-sensors = <&thermal 0>;
> > > +			sustainable-power = <1000>;
> > > +
> > > +			trips {
> > > +				threshold: trip-point@0 {
> > > +					temperature = <68000>;
> > > +					hysteresis = <2000>;
> > > +					type = "passive";
> > > +				};
> > > +
> > > +				target: trip-point@1 {
> > > +					temperature = <85000>;
> > > +					hysteresis = <2000>;
> > > +					type = "passive";
> > > +				};
> > > +
> > > +				cpu_crit: cpu_crit@0 {
> > > +					temperature = <115000>;
> > > +					hysteresis = <2000>;
> > > +					type = "critical";
> > > +				};
> > > +			};
> > > +		};
> > > +	};
> > > +
> > >  	timer {
> > >  		compatible = "arm,armv7-timer";
> > >  		interrupt-parent = <&gic>;
> > > @@ -183,4 +213,17 @@
> > >  		clocks = <&uart_clk>;
> > >  		status = "disabled";
> > >  	};
> > > +
> > > +	thermal: thermal@1100b000 {
> > > +		#thermal-sensor-cells = <0>;
> > > +		compatible = "mediatek,mt2701-thermal";
> > > +		reg = <0 0x1100b000 0 0x1000>;
> > > +		interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_LOW>;
> > > +		clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>;
> > > +		clock-names = "therm", "auxadc";
> > > +		resets = <&pericfg 0x10>;
> > > +		reset-names = "therm";
> > > +		mediatek,auxadc = <&auxadc>;
> > > +		mediatek,apmixedsys = <&apmixedsys>;
> > > +	};
> > >  };
> >
> > what about:
> > status = "disabled"; ?
>
> Since thermal driver would protect our platform by shutdown method once
> SoC temperature over critical point, I prefer keep this rather than
> disabling, how do you think, thank you.

Sounds reasonable. Thanks