On Sun, Feb 16, 2014 at 03:48:53PM +0800, Shawn Guo wrote:
> Copy more DT folks and lists, as I want to make sure everyone agrees on
> how the fixed regulators should organized in the device tree sources,
> before I apply the patch.
> 
> On Sun, Jan 26, 2014 at 01:39:31PM +0800, Fugang Duan wrote:
> > vf610 has two ADC controllers, and vf610-twr board ADC0_SE5 pin connect
> > to sliding rheostat for ADC test, other ADC pins connect to connectors for
> > future use.
> > 
> > Add support for ADC0_SE5.
> > 
> > CC: Shawn Guo <[email protected]>
> > CC: Jonathan Cameron <[email protected]>
> > CC: Mark Rutland <[email protected]>
> > CC: Otavio Salvador <[email protected]>
> > CC: Peter Meerwald <[email protected]>
> > CC: Lars-Peter Clausen <[email protected]>
> > Signed-off-by: Fugang Duan <[email protected]>
> > ---
> >  arch/arm/boot/dts/vf610-twr.dts |   21 +++++++++++++++++++++
> >  arch/arm/boot/dts/vf610.dtsi    |   26 ++++++++++++++++++++++++++
> >  2 files changed, 47 insertions(+), 0 deletions(-)
> > 
> > diff --git a/arch/arm/boot/dts/vf610-twr.dts 
> > b/arch/arm/boot/dts/vf610-twr.dts
> > index c8047ca..d867be3 100644
> > --- a/arch/arm/boot/dts/vf610-twr.dts
> > +++ b/arch/arm/boot/dts/vf610-twr.dts
> > @@ -34,6 +34,27 @@
> >             };
> >     };
> >  
> > +   regulators {
> > +           compatible = "simple-bus";
> > +           #address-cells = <1>;
> > +           #size-cells = <0>;
> > +
> > +           reg_vcc_3v3_mcu: regulator@0 {
> > +                   compatible = "regulator-fixed";
> > +                   reg = <0>;
> > +                   regulator-name = "vcc_3v3_mcu";
> > +                   regulator-min-microvolt = <3300000>;
> > +                   regulator-max-microvolt = <3300000>;
> > +           };
> > +   };
> 
> Per discussion [1], Mark Rutland suggests that instead of organizing
> the fixed regulator nodes in a simple-bus container, it should be put
> under root node directly like below.
> 
> / {
>       reg_vcc_3v3_mcu: regulator_0 {
>               compatible = "regulator-fixed";
>               regulator-name = "vcc_3v3_mcu";
>               regulator-min-microvolt = <3300000>;
>               regulator-max-microvolt = <3300000>;
>       };
> };
> 
> Is this what all DT folks agree on?  At least the node name should be
> 'regulator-0' since it's more idiomatic to use '-' than '_' in node
> name?

It looks that Mark is giving up [1].  And we're fine with the original
code then.

Shawn

[1] http://thread.gmane.org/gmane.linux.drivers.devicetree/61894/focus=62405

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