linux-kernel - RE: [PATCH] arm64: dts: ls1088a: add one more thermal zone node

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Date:   Mon, 4 Mar 2019 02:47:49 +0000
From:   Andy Tang <andy.tang@....com>
To:     Shawn Guo <shawnguo@...nel.org>
CC:     Leo Li <leoyang.li@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        "rui.zhang@...el.com" <rui.zhang@...el.com>,
        "edubezval@...il.com" <edubezval@...il.com>
Subject: RE: [PATCH] arm64: dts: ls1088a: add one more thermal zone node



> -----Original Message-----
> From: Shawn Guo <shawnguo@...nel.org>
> Sent: 2019年3月1日 21:38
> To: Andy Tang <andy.tang@....com>
> Cc: Leo Li <leoyang.li@....com>; robh+dt@...nel.org; mark.rutland@....com;
> linux-arm-kernel@...ts.infradead.org; devicetree@...r.kernel.org;
> linux-kernel@...r.kernel.org; linux-pm@...r.kernel.org;
> daniel.lezcano@...aro.org; rui.zhang@...el.com; edubezval@...il.com
> Subject: Re: [PATCH] arm64: dts: ls1088a: add one more thermal zone node
> 
> On Mon, Feb 25, 2019 at 11:00:49AM +0800, Yuantian Tang wrote:
> > Ls1088a has 2 thermal sensors. This patch adds the second node to dts
> > to enable it.
> 
> Can you elaborate on these 2 thermal sensors/zones, ccu and plt?
> 
OK, thanks.

BR,
Andy  

> Shawn
> 
> >
> > Signed-off-by: Yuantian Tang <andy.tang@....com>
> > ---
> >  arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi |   43
> +++++++++++++++++++++--
> >  1 files changed, 39 insertions(+), 4 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> > b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> > index 661137f..9f52bc9 100644
> > --- a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> > @@ -129,19 +129,19 @@
> >  	};
> >
> >  	thermal-zones {
> > -		cpu_thermal: cpu-thermal {
> > +		ccu {
> >  			polling-delay-passive = <1000>;
> >  			polling-delay = <5000>;
> >  			thermal-sensors = <&tmu 0>;
> >
> >  			trips {
> > -				cpu_alert: cpu-alert {
> > +				ccu_alert: ccu-alert {
> >  					temperature = <85000>;
> >  					hysteresis = <2000>;
> >  					type = "passive";
> >  				};
> >
> > -				cpu_crit: cpu-crit {
> > +				ccu_crit: ccu-crit {
> >  					temperature = <95000>;
> >  					hysteresis = <2000>;
> >  					type = "critical";
> > @@ -150,7 +150,42 @@
> >
> >  			cooling-maps {
> >  				map0 {
> > -					trip = <&cpu_alert>;
> > +					trip = <&ccu_alert>;
> > +					cooling-device =
> > +						<&cpu0 THERMAL_NO_LIMIT
> THERMAL_NO_LIMIT>,
> > +						<&cpu1 THERMAL_NO_LIMIT
> THERMAL_NO_LIMIT>,
> > +						<&cpu2 THERMAL_NO_LIMIT
> THERMAL_NO_LIMIT>,
> > +						<&cpu3 THERMAL_NO_LIMIT
> THERMAL_NO_LIMIT>,
> > +						<&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>;
> > +				};
> > +			};
> > +		};
> > +
> > +		plt {
> > +			polling-delay-passive = <1000>;
> > +			polling-delay = <5000>;
> > +			thermal-sensors = <&tmu 1>;
> > +
> > +			trips {
> > +				plt_alert: plt-alert {
> > +					temperature = <85000>;
> > +					hysteresis = <2000>;
> > +					type = "passive";
> > +				};
> > +
> > +				plt_crit: plt-crit {
> > +					temperature = <95000>;
> > +					hysteresis = <2000>;
> > +					type = "critical";
> > +				};
> > +			};
> > +
> > +			cooling-maps {
> > +				map0 {
> > +					trip = <&plt_alert>;
> >  					cooling-device =
> >  						<&cpu0 THERMAL_NO_LIMIT
> THERMAL_NO_LIMIT>,
> >  						<&cpu1 THERMAL_NO_LIMIT
> THERMAL_NO_LIMIT>,
> > --
> > 1.7.1
> >