On Sat, May 06, 2023 at 02:33:11PM +0300, Dmitry Baryshkov wrote: > On Sat, 6 May 2023 at 14:09, Varadarajan Narayanan > <quic_varada@xxxxxxxxxxx> wrote: > > > > On Fri, May 05, 2023 at 12:29:54PM +0300, Dmitry Baryshkov wrote: > > > On Fri, 5 May 2023 at 11:23, Varadarajan Narayanan > > > <quic_varada@xxxxxxxxxxx> 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. > > > > These are always ON because USB phy doesn't support power > > collapse, and there is a chance that other IP blocks might be > > sharing the rail. > > You are describing the software side here. From the hardware point of > view, it is an I2C regulator, which is probably also exported as an > SMD_RPM regulator. Unless you have a good reason not to do so, there > should be a node under rpm-requests, which describes mp5496 regulators > exported via RPM. then USB should refer to those regulators. Yes. It is a part of rpm-requests. That is why have mentioned V10 is dependent on https://lore.kernel.org/lkml/20230407155727.20615-1-quic_devipriy@xxxxxxxxxxx/T/. The 4th patch of the above series (https://lore.kernel.org/lkml/20230407155727.20615-1-quic_devipriy@xxxxxxxxxxx/T/#mea3f0ea37c53cf5e39e10cd6cf3bed5243cec629) adds the rpm_requests node and this regulator definition is added to it. Hope that is ok. Thanks Varada > > > > Signed-off-by: Varadarajan Narayanan <quic_varada@xxxxxxxxxxx> > > > > --- > > > > 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; > > > > + }; > > > > }; > > > > }; > > > > > > > > -- > > > > 2.7.4 > > > > > > > > > > > > > -- > > > With best wishes > > > Dmitry > > > > -- > With best wishes > Dmitry
