linux-kernel - Re: [PATCH v2 1/1] arm64: dts: qcom: sm8350-sagami: usb qmp phy node - add 'vdda-pll-supply' & 'vdda-phy-supply'

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Message-ID: <Yl9y668H/N+bcrP4@builder.lan>
Date:   Tue, 19 Apr 2022 21:41:47 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Bhupesh Sharma <bhupesh.sharma@...aro.org>,
        konrad.dybcio@...ainline.org
Cc:     linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        bhupesh.linux@...il.com, linux-kernel@...r.kernel.org,
        vkoul@...nel.org, Marijn Suijten <marijn.suijten@...ainline.org>
Subject: Re: [PATCH v2 1/1] arm64: dts: qcom: sm8350-sagami: usb qmp phy node
 - add 'vdda-pll-supply' & 'vdda-phy-supply'

On Tue 19 Apr 15:58 CDT 2022, Bhupesh Sharma wrote:

How about making the subject:

"arm64: dts: qcom: sm8350-sagami: add supplies to USB phy node"

It still says the same thing, but in much less characters.

> As suggested by Bjorn during review of [1], the 'vdda-pll-supply' &
> 'vdda-phy-supply' supplies denote the power for the bus and the
> clock of the usb qmp phy and are used by the qcom qmp phy driver.
> 
> So, its safe to assume that the two regulators are the same as on
> the MTP. So let's wire them up in the same way as the MTP.
> 

I'm not sure it's "safe to assume", so I would like to get Konrad's
input before merging this.

> In absence of the same 'make dtbs_check' leads to following warnings:
> 
> arch/arm64/boot/dts/qcom/sm8350-sony-xperia-sagami-pdx215.dt.yaml:
>  phy-wrapper@...9000: 'vdda-phy-supply' is a required property
> 
> arch/arm64/boot/dts/qcom/sm8350-sony-xperia-sagami-pdx215.dt.yaml:
>  phy-wrapper@...9000: 'vdda-pll-supply' is a required property
> 

This is good!

Thanks for the patch Bhupesh,
Bjorn

> [1]. https://lore.kernel.org/lkml/20220228123019.382037-9-bhupesh.sharma@linaro.org/
> 
> Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
> Cc: konrad.dybcio@...ainline.org
> Cc: Vinod Koul <vkoul@...nel.org>
> Cc: Marijn Suijten <marijn.suijten@...ainline.org>
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
> ---
> Changes since v1:
> -----------------
> - v1 can be found here: https://www.spinics.net/lists/linux-arm-msm/msg108467.html
> - Fixed the commit message to read usb qmp phy instead of ufs phy (which
>   was introduced erroraneously in the commit log).
> 
>  .../dts/qcom/sm8350-sony-xperia-sagami.dtsi   | 25 +++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8350-sony-xperia-sagami.dtsi b/arch/arm64/boot/dts/qcom/sm8350-sony-xperia-sagami.dtsi
> index 90b13cbe2fa6..238ac9380ca2 100644
> --- a/arch/arm64/boot/dts/qcom/sm8350-sony-xperia-sagami.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8350-sony-xperia-sagami.dtsi
> @@ -3,6 +3,7 @@
>   * Copyright (c) 2021, Konrad Dybcio <konrad.dybcio@...ainline.org>
>   */
>  
> +#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
>  #include "sm8350.dtsi"
>  #include "pm8350.dtsi"
>  #include "pm8350b.dtsi"
> @@ -75,6 +76,27 @@ ramoops@...00000 {
>  	};
>  };
>  
> +&apps_rsc {
> +	pm8350-rpmh-regulators {
> +		compatible = "qcom,pm8350-rpmh-regulators";
> +		qcom,pmic-id = "b";
> +
> +		vreg_l1b_0p88: ldo1 {
> +			regulator-name = "vreg_l1b_0p88";
> +			regulator-min-microvolt = <912000>;
> +			regulator-max-microvolt = <920000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +
> +		vreg_l6b_1p2: ldo6 {
> +			regulator-name = "vreg_l6b_1p2";
> +			regulator-min-microvolt = <1200000>;
> +			regulator-max-microvolt = <1208000>;
> +			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> +		};
> +	};
> +};
> +
>  &adsp {
>  	status = "okay";
>  	firmware-name = "qcom/adsp.mbn";
> @@ -256,4 +278,7 @@ &usb_1_hsphy {
>  
>  &usb_1_qmpphy {
>  	status = "okay";
> +
> +	vdda-phy-supply = <&vreg_l6b_1p2>;
> +	vdda-pll-supply = <&vreg_l1b_0p88>;
>  };
> -- 
> 2.35.1
>