[1/1] arm64: dts: qcom: sm8350-sagami: UFS phy - add 'vdda-pll-supply' & 'vdda-phy-supply'

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 UFS PHY.

For pdx215 to have a functional UFS, these two supplies seem mandatory.
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.

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@88e9000: 'vdda-phy-supply' is a required property

arch/arm64/boot/dts/qcom/sm8350-sony-xperia-sagami-pdx215.dt.yaml:
 phy-wrapper@88e9000: 'vdda-pll-supply' is a required property

[1]. https://lore.kernel.org/lkml/20220228123019.382037-9-bhupesh.sharma@linaro.org/

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: konrad.dybcio@somainline.org
Cc: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 .../dts/qcom/sm8350-sony-xperia-sagami.dtsi   | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

On Thu, 14 Apr 2022 at 19:41, Marijn Suijten
<marijn.suijten@somainline.org> wrote:
>
> On 2022-04-14 17:59:28, Bhupesh Sharma wrote:
> > 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 UFS PHY.
> >
> > For pdx215 to have a functional UFS [..] safe to assume [..]
>
> By "functional" you are referring to sending a certain UFS command that
> accidentally wipes the bootloader [1] [2], turning the device into a
> _very_ expensive (+$1000) paperweight?
>
> [1]: https://lore.kernel.org/lkml/20211111184630.605035-1-konrad.dybcio@somainline.org/
> [2]: https://github.com/kholk/kernel/commit/2e7a9ee1c91a016baa0b826a7752ec45663a0561
>
> > 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@88e9000: 'vdda-phy-supply' is a required property
> >
> > arch/arm64/boot/dts/qcom/sm8350-sony-xperia-sagami-pdx215.dt.yaml:
> >  phy-wrapper@88e9000: 'vdda-pll-supply' is a required property
> >
> > [1]. https://lore.kernel.org/lkml/20220228123019.382037-9-bhupesh.sharma@linaro.org/
> >
> > Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> > Cc: konrad.dybcio@somainline.org
> > Cc: Vinod Koul <vkoul@kernel.org>
> > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> > ---
> >  .../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@somainline.org>
> >   */
> >
> > +#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> >  #include "sm8350.dtsi"
> >  #include "pm8350.dtsi"
> >  #include "pm8350b.dtsi"
> > @@ -75,6 +76,27 @@ ramoops@ffc00000 {
> >       };
> >  };
> >
> > +&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>;
>
> I'm probably understanding your patch wrong, but this is the USB phy,
> not the UFS phy?  The warning from dtbs_check on `phy-wrapper@88e9000`
> is also the `qmp-usb3-phy`, not the `qmp-ufs-phy` - seems this patch has
> little to do with UFS after all?

Indeed, it should be the qmp USB3 phy, instead.. my bad.. I will fix it in v2.

Do you see any issues with enabling these two regulators in the
'sm8350-sony-xperia-sagami-pdx215' dts?

Thanks,
Bhupesh

> >  };
> > --
> > 2.35.1
> >