Re: [PATCH v2 05/13] ARM: dts: db600c: add pmic regulator supplies

[Srinivas Kandagatla]

On 19/04/16 20:10, Stephen Boyd wrote:
> On 04/12/2016 02:33 AM, Srinivas Kandagatla wrote:
> > This patch adds pmic regulator supplies connected on the board.
> > Rest of the invidual regulators would be added as and when required by
> > the devices.
> >
> > Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
> > Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> > ---
> >   arch/arm/boot/dts/qcom-apq8064-arrow-db600c.dts | 62 +++++++++++++++++++++++++
> >   1 file changed, 62 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/qcom-apq8064-arrow-db600c.dts b/arch/arm/boot/dts/qcom-apq8064-arrow-db600c.dts
> > index 57d4500..6695b00 100644
> > --- a/arch/arm/boot/dts/qcom-apq8064-arrow-db600c.dts
> > +++ b/arch/arm/boot/dts/qcom-apq8064-arrow-db600c.dts
> > @@ -9,7 +9,69 @@
> >   		serial1 = &gsbi1_serial;
> >   	};
> >
> > +	regulators {
> > +		compatible = "simple-bus";
> > +		vph: regulator-fixed@1 {
> > +			compatible = "regulator-fixed";
> > +			regulator-min-microvolt = <4500000>;
> > +			regulator-max-microvolt = <4500000>;
> > +			regulator-name = "VPH";
> > +			regulator-type = "voltage";
> > +			regulator-boot-on;
> > +		};
> > +	};
>
> Just curious why we added the vph supply? Is that for some framework
> requirement? We haven't done this on other boards, although we probably
> should if there's a good reason for it.

This is an on board 12V TO 4.5V @5.5A DC/DC convertor for PMIC VPH 
power. Yep we should do something similar on the other boards too. 
Without this probably you would notice some error messages from 
rpm_regulators about missing supply nodes.


thanks,
srini



>