linux-kernel - Re: [PATCH v2 09/12] arm64: dts: qcom: sc8280xp-x13s: Add PM8280

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Date:   Sat, 29 Oct 2022 16:20:05 +0200
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        andersson@...nel.org
Cc:     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, steev@...i.org
Subject: Re: [PATCH v2 09/12] arm64: dts: qcom: sc8280xp-x13s: Add
 PM8280_{1/2} VADC channels



On 29.10.2022 07:14, 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
> secondary PMICs PM8280_{1/2} and exposed over the PMK8280's VADC 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 18315743313b..250e1489f029 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 @@ xo-therm@44 {
>  		qcom,ratiometric;
>  		qcom,hw-settle-time = <200>;
>  	};
> +
> +	pmic-die-temp@103 {
> +		reg = <PM8350_ADC7_DIE_TEMP(1)>;
> +		label = "pm8280_1_die_temp";
> +		qcom,pre-scaling = <1 1>;
> +	};
> +
> +	sys-therm@144 {
> +		reg = <PM8350_ADC7_AMUX_THM1_100K_PU(1)>;
> +		qcom,ratiometric;
> +		qcom,hw-settle-time = <200>;
As I mentioned in the previous patch, maybe swapping the order of these two properties
would make it look better, but of course that doesn't affect functionality.

Reviewed-by: Konrad Dybcio <konrad.dybcio@...ainline.org>

Konrad
> +	};
> +
> +	sys-therm@145 {
> +		reg = <PM8350_ADC7_AMUX_THM2_100K_PU(1)>;
> +		qcom,ratiometric;
> +		qcom,hw-settle-time = <200>;
> +	};
> +
> +	sys-therm@146 {
> +		reg = <PM8350_ADC7_AMUX_THM3_100K_PU(1)>;
> +		qcom,ratiometric;
> +		qcom,hw-settle-time = <200>;
> +	};
> +
> +	sys-therm@147 {
> +		reg = <PM8350_ADC7_AMUX_THM4_100K_PU(1)>;
> +		qcom,ratiometric;
> +		qcom,hw-settle-time = <200>;
> +	};
> +
> +	pmic-die-temp@303 {
> +		reg = <PM8350_ADC7_DIE_TEMP(3)>;
> +		label = "pm8250_2_die_temp";
> +		qcom,pre-scaling = <1 1>;
> +	};
> +
> +	sys-therm@344 {
> +		reg = <PM8350_ADC7_AMUX_THM1_100K_PU(3)>;
> +		qcom,ratiometric;
> +		qcom,hw-settle-time = <200>;
> +	};
> +
> +	sys-therm@345 {
> +		reg = <PM8350_ADC7_AMUX_THM2_100K_PU(3)>;
> +		qcom,ratiometric;
> +		qcom,hw-settle-time = <200>;
> +	};
> +
> +	sys-therm@346 {
> +		reg = <PM8350_ADC7_AMUX_THM3_100K_PU(3)>;
> +		qcom,ratiometric;
> +		qcom,hw-settle-time = <200>;
> +	};
> +
> +	sys-therm@347 {
> +		reg = <PM8350_ADC7_AMUX_THM4_100K_PU(3)>;
> +		qcom,ratiometric;
> +		qcom,hw-settle-time = <200>;
> +	};
>  };
>  
>  &qup0 {