linux-kernel - Re: [PATCH 09/11] arm64: dts: qcom: sc8280xp-x13s: Add PM8280

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Date:   Sat, 29 Oct 2022 10:18:31 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     andersson@...nel.org, konrad.dybcio@...ainline.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        johan+linaro@...nel.org, quic_jprakash@...cinc.com,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/11] arm64: dts: qcom: sc8280xp-x13s: Add PM8280_{1/2}
 VADC channels

On Thu, Oct 27, 2022 at 10:09:21AM -0400, Krzysztof Kozlowski wrote:
> On 27/10/2022 02:30, Manivannan Sadhasivam wrote:
> > Add VADC channels of PM8280_{1/2} PMICs for measuring the on-chip die
> > temperature and external thermistors connected to the AMUX pins.
> > 
> > The measurements are collected by the primary PMIC PMK8280 from the
> > slave PMICs PM8280_{1/2} and exposed them over the PMK8280's VADC
> 
> secondary PMICs
> 
> Drop "them"
> 
> 
> > channels.
> > 
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > ---
> >  .../qcom/sc8280xp-lenovo-thinkpad-x13s.dts    | 61 +++++++++++++++++++
> >  1 file changed, 61 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> > index 9ac5d5c22832..d300d217fdc6 100644
> > --- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> > +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> > @@ -7,6 +7,7 @@
> >  /dts-v1/;
> >  
> >  #include <dt-bindings/gpio/gpio.h>
> > +#include <dt-bindings/iio/qcom,spmi-adc7-pm8350.h>
> >  #include <dt-bindings/iio/qcom,spmi-adc7-pmk8350.h>
> >  #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> >  
> > @@ -189,6 +190,66 @@ pmk8280-xo-therm@44 {
> >  		qcom,ratiometric;
> >  		qcom,hw-settle-time = <200>;
> >  	};
> > +
> > +	pm8280-1-die-temp@103 {
> 
> pmic-die-temp? What pm8280 stands here?
> 

As agreed, will use "pmic-die-temp"

> 
> > +		reg = <PM8350_ADC7_DIE_TEMP(1)>;
> > +		label = "pm8280_1_die_temp";
> > +		qcom,pre-scaling = <1 1>;
> > +	};
> > +
> > +	sys-therm1@144 {
> 
> I would say sys-therm@... why do we need the "1" suffix in node name?
> 

Suffix represents the index of the thermistor as per the schematics but I guess
it can be dropped.

Thanks,
Mani

> > +		reg = <PM8350_ADC7_AMUX_THM1_100K_PU(1)>;
> > +		qcom,ratiometric;
> > +		qcom,hw-settle-time = <200>;
> > +	};
> 
> Best regards,
> Krzysztof
> 

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