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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Date:   Wed, 20 Apr 2022 12:28:24 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     konrad.dybcio@...ainline.org, 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'

Hi Bjorn,

On Wed, 20 Apr 2022 at 08:11, Bjorn Andersson
<bjorn.andersson@...aro.org> wrote:
>
> 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.

Sure, this wording seems better to me. Will fix this in v3.

> > 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.

Right. @Konrad Dybcio , @Marijn Suijten - Any comments on this fix?
Please share your thoughts.

Thanks,
Bhupesh

> > 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
> >