linux-kernel - Re: [PATCH v2 1/2] arm64: dts: qcom: pm8998: Add spmi-temp-alarm node

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Date:   Mon, 2 Jul 2018 13:51:46 -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 v2 1/2] arm64: dts: qcom: pm8998: Add spmi-temp-alarm node

On Mon, Jul 02, 2018 at 01:12:01PM -0700, Doug Anderson wrote:
> Hi,
> 
> On Mon, Jul 2, 2018 at 11:10 AM, Matthias Kaehlcke <mka@...omium.org> wrote:
> > This adds the spmi-temp-alarm node to pm8998 based on the examples in the
> > bindings.
> >
> > Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
> > ---
> > Changes in v2:
> > - none
> >
> >  arch/arm64/boot/dts/qcom/pm8998.dtsi | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/pm8998.dtsi b/arch/arm64/boot/dts/qcom/pm8998.dtsi
> > index 92bed1e7d4bb..2f4989e7ef68 100644
> > --- a/arch/arm64/boot/dts/qcom/pm8998.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/pm8998.dtsi
> > @@ -11,6 +11,13 @@
> >                 #address-cells = <1>;
> >                 #size-cells = <0>;
> >
> > +               pm8998_temp: qcom,temp-alarm@...0 {
> 
> Remove "qcom," from the node name (AKA please change to
> "temp-alarm@...0").  Someone internal in Qualcomm seems to have
> started this trend so you see it on all downstream kernels, but
> upstream device tree isn't supposed to have it.

Ok, thanks

> > +                       compatible = "qcom,spmi-temp-alarm";
> > +                       reg = <0x2400 0x100>;
> 
> Why are there two numbers for the "reg"?  Should just be 0x2400.

>From /Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt:

Required properties:
...
- reg:             Specifies the SPMI address and length of the controller's
                   registers.