2019-09-17 09:49:13

by Biwen Li

[permalink] [raw]
Subject: RE: [EXT] Re: [PATCH] devicetree: property-units: Add kohms unit

>
> Caution: EXT Email
>
> Hi Biwen,
>
> On Tue, Sep 17, 2019 at 10:09 AM Biwen Li <[email protected]> wrote:
> > The patch adds kohms unit
> >
> > Signed-off-by: Biwen Li <[email protected]>
>
> Thanks for your patch!
>
> > --- a/Documentation/devicetree/bindings/property-units.txt
> > +++ b/Documentation/devicetree/bindings/property-units.txt
> > @@ -27,6 +27,7 @@ Electricity
> > -microamp : microampere
> > -microamp-hours : microampere hour
> > -ohms : ohm
> > +-kohms : kiloohm
> > -micro-ohms : microohm
> > -microwatt-hours: microwatt hour
> > -microvolt : microvolt
>
> What's your rationale for adding "kohms"?
> Do you need to specify resistance values that do not fit in 32-bit, and thus
32-bit is enough, I have three values, 60 kohm, 100 kohm and 500 kohm
> cannot be specified using "ohms"?
If replace with ohms, the value is as follows:
60000 ohm, 100000 ohm, 500000 ohm.
It's so long for everyone.

>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 --
> [email protected]
>
> In personal conversations with technical people, I call myself a hacker. But when
> I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds


2019-09-30 22:51:24

by Rob Herring

[permalink] [raw]
Subject: Re: [EXT] Re: [PATCH] devicetree: property-units: Add kohms unit

On Tue, Sep 17, 2019 at 08:25:55AM +0000, Biwen Li wrote:
> >
> > Caution: EXT Email
> >
> > Hi Biwen,
> >
> > On Tue, Sep 17, 2019 at 10:09 AM Biwen Li <[email protected]> wrote:
> > > The patch adds kohms unit
> > >
> > > Signed-off-by: Biwen Li <[email protected]>
> >
> > Thanks for your patch!
> >
> > > --- a/Documentation/devicetree/bindings/property-units.txt
> > > +++ b/Documentation/devicetree/bindings/property-units.txt
> > > @@ -27,6 +27,7 @@ Electricity
> > > -microamp : microampere
> > > -microamp-hours : microampere hour
> > > -ohms : ohm
> > > +-kohms : kiloohm
> > > -micro-ohms : microohm
> > > -microwatt-hours: microwatt hour
> > > -microvolt : microvolt
> >
> > What's your rationale for adding "kohms"?
> > Do you need to specify resistance values that do not fit in 32-bit, and thus
> 32-bit is enough, I have three values, 60 kohm, 100 kohm and 500 kohm
> > cannot be specified using "ohms"?
> If replace with ohms, the value is as follows:
> 60000 ohm, 100000 ohm, 500000 ohm.
> It's so long for everyone.

It's not any longer, it's still 32-bits.

Please stick with '-ohms'.

Rob