linux-kernel - Re: [PATCH v10 8/9] arm64: dts: qcom: ipq9574: Add LDO regulator node

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Message-ID: <CAA8EJpqEk=dQkChFh3HaTuTpO3wsebS8_p4RH-1_JrWoS_HbeQ@mail.gmail.com>
Date:   Sat, 6 May 2023 14:07:56 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     Varadarajan Narayanan <quic_varada@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, vkoul@...nel.org, kishon@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        gregkh@...uxfoundation.org, mturquette@...libre.com,
        sboyd@...nel.org, quic_wcheng@...cinc.com,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH v10 8/9] arm64: dts: qcom: ipq9574: Add LDO regulator node

On Fri, 5 May 2023 at 22:26, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>
>
>
> On 5.05.2023 11:29, Dmitry Baryshkov wrote:
> > On Fri, 5 May 2023 at 11:23, Varadarajan Narayanan
> > <quic_varada@...cinc.com> wrote:
> >>
> >> Add LDO regulator node
> >
> > As this LDO is provided by the PMIC, it would be nice to know why it
> > is modelled as an always-on regulator instead of the proper PMIC
> > regulator. Up to now we were doing this only for the outstanding power
> > rails like CX/MX or EBI.
> (which we then stopped registering as regulators and started
> to manage through rpm(h)pd drivers and the genpd framework)

I mean having regulator-fixed s4a on sm8250 in addition to the CX
genpd, because some of the parts really expect to have a regulator.
But anyway, we are getting away from the subj. Let's wait for the
answer from Varadarajan.

>
> Konrad
> >
> >>
> >> Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> >> ---
> >>  Changes in v10:
> >>         - Add LDO regulator node
> >> ---
> >>  arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts | 7 +++++++
> >>  1 file changed, 7 insertions(+)
> >>
> >> diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> >> index bdc1434..1f5d14f 100644
> >> --- a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> >> +++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> >> @@ -60,6 +60,13 @@
> >>                         regulator-min-microvolt = <725000>;
> >>                         regulator-max-microvolt = <1075000>;
> >>                 };
> >> +
> >> +               mp5496_l2: l2 {
> >> +                       regulator-min-microvolt = <1800000>;
> >> +                       regulator-max-microvolt = <1800000>;
> >> +                       regulator-boot-on;
> >> +                       regulator-always-on;
> >> +               };
> >>         };
> >>  };

-- 
With best wishes
Dmitry