linux-kernel - Re: [PATCH 4/4] arm64: dts: qcom: sm6375-pdx225: Add USBPHY regulators

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Date:   Wed, 27 Sep 2023 12:01:04 +0100
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] arm64: dts: qcom: sm6375-pdx225: Add USBPHY
 regulators

On 27/09/2023 10:21, Konrad Dybcio wrote:
> To make dtbs_check happy and the software more aware of what's going
> on, describe the HSUSB PHY's regulators and tighten up VDDA_PLL to match.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts | 7 +++++--
>   1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts b/arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts
> index bbec7aee60be..0ce4fa8de8b0 100644
> --- a/arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts
> +++ b/arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts
> @@ -243,8 +243,8 @@ pm6125_l6: l6 {
>   		};
>   
>   		pm6125_l7: l7 {
> -			regulator-min-microvolt = <720000>;
> -			regulator-max-microvolt = <1050000>;
> +			regulator-min-microvolt = <880000>;
> +			regulator-max-microvolt = <880000>;

Where did the old values come from and why are the new values better ?

Consider enumerating that in the commit log.

>   		};
>   
>   		pm6125_l8: l8 {
> @@ -430,6 +430,9 @@ &usb_1_dwc3 {
>   };
>   
>   &usb_1_hsphy {
> +	vdda-pll-supply = <&pm6125_l7>;
> +	vdda18-supply = <&pm6125_l10>;
> +	vdda33-supply = <&pmr735a_l7>;
>   	status = "okay";
>   };

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>