linux-kernel - Re: [PATCH 1/3] arm64: dts: qcom: sdm845: Add thermal-zones node

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Message-ID: <20180629183018.GU129942@google.com>
Date:   Fri, 29 Jun 2018 11:30:18 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Doug Anderson <dianders@...omium.org>
Cc:     Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-soc@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        David Collins <collinsd@...eaurora.org>,
        Stephen Boyd <sboyd@...nel.org>
Subject: Re: [PATCH 1/3] arm64: dts: qcom: sdm845: Add thermal-zones node

On Thu, Jun 28, 2018 at 03:52:57PM -0700, Doug Anderson wrote:
> Hi,
> 
> On Thu, Jun 28, 2018 at 2:09 PM, Matthias Kaehlcke <mka@...omium.org> wrote:
> > The node is empty for now. It is needed to allow other DT snippets
> > to add thermal zone entries.
> >
> > Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
> > ---
> > Sorry if you received this twice, lists were missing in cc in the first attempt ...
> >
> >  arch/arm64/boot/dts/qcom/sdm845.dtsi | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> > index 00722b533a92..968390fb0933 100644
> > --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> > @@ -9,6 +9,7 @@
> >  #include <dt-bindings/clock/qcom,rpmh.h>
> >  #include <dt-bindings/interrupt-controller/arm-gic.h>
> >  #include <dt-bindings/soc/qcom,rpmh-rsc.h>
> > +#include <dt-bindings/thermal/thermal.h>
> >
> >  / {
> >         interrupt-parent = <&intc>;
> > @@ -1087,4 +1088,7 @@
> >                         };
> >                 };
> >         };
> > +
> > +       thermal_zones: thermal-zones {
> > +       };
> 
> Others can feel free to disagree, but IMO ${SUBJECT} patch is not
> needed.  Instead patch #3 in your series should just define a
> "thermal-zones" node at the root level.  The "thermal-zones" node is a
> well-defined node with a well-defined node name and location (see the
> "thermal.txt" binding).  If the SoC has a "thermal-zones" node and so
> does the PMIC then they'll just be merged.

Just defining it here makes perfect sense, thanks!