linux-kernel - Re: [RESEND PATCH V4 2/8] arm64: dts: qcom: sc7280: Add thermal-zones node

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Date:   Tue, 18 May 2021 09:27:31 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     satya priya <skakit@...eaurora.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, kgunda@...eaurora.org
Subject: Re: [RESEND PATCH V4 2/8] arm64: dts: qcom: sc7280: Add
 thermal-zones node

On Tue, May 18, 2021 at 05:14:03PM +0530, Vinod Koul wrote:
> On 18-05-21, 11:50, satya priya wrote:
> > Add thermal-zones node for SC7280 SoC.
> > 
> > Signed-off-by: satya priya <skakit@...eaurora.org>
> > Reviewed-by: Matthias Kaehlcke <mka@...omium.org>
> > ---
> > Changes in RESEND V4:
> >  - No Changes.
> > 
> >  arch/arm64/boot/dts/qcom/sc7280.dtsi | 3 +++
> >  1 file changed, 3 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> > index 2cc4785..2a7d488 100644
> > --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> > @@ -1125,4 +1125,7 @@
> >  			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
> >  			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
> >  	};
> > +
> > +	thermal_zones: thermal-zones {
> > +	};
> 
> Empty node..? what am i missing here...

The 'thermal-zones' node with the SoC thermal zones is usually created
in the <soc>.dtsi, however it doesn't exist yet. The 'Add DT bindings
and device tree nodes for TSENS in SC7280' series
(https://patchwork.kernel.org/project/linux-arm-msm/list/?series=478225)
is creating it, but the series hasn't landed yet.

The node is needed by other patches in this series that add non-SoC
thermal zones. Hence either an empty node needs to be added (for now)
or this series should 'officially' depend on the TSENS series mentioned
above.