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Re: [PATCH 1/3] Documentation: dtb: xgene: Add hwmon dts binding documentation

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  Re: [PATCH 1/3] Documentation: dtb: xgene: Add hwmon dts binding documentation Hoan Tran <hotran@apm.com> - 2016-06-07 18:40 +0200

#1416404 — Re: [PATCH 1/3] Documentation: dtb: xgene: Add hwmon dts binding documentation

Hi Rob,

On Wed, May 25, 2016 at 10:09 AM, Rob Herring <robh@kernel.org> wrote:
>
> On Mon, May 23, 2016 at 06:01:14PM -0700, Hoan Tran wrote:
> > Hi Rob,
> >
> > Thanks for your review !
> >
> > On Mon, May 23, 2016 at 1:30 PM, Rob Herring <robh@kernel.org> wrote:
> > >
> > > On Mon, May 16, 2016 at 09:17:25AM -0700, Hoan Tran wrote:
> > > > This patch adds the APM X-Gene hwmon device tree node documentation.
> > > >
> > > > Signed-off-by: Hoan Tran <hotran@apm.com>
> > > > ---
> > > >  .../devicetree/bindings/hwmon/apm-xgene-hwmon.txt          | 14 ++++++++++++++
> > > >  1 file changed, 14 insertions(+)
> > > >  create mode 100644 Documentation/devicetree/bindings/hwmon/apm-xgene-hwmon.txt
> > > >
> > > > diff --git a/Documentation/devicetree/bindings/hwmon/apm-xgene-hwmon.txt b/Documentation/devicetree/bindings/hwmon/apm-xgene-hwmon.txt
> > > > new file mode 100644
> > > > index 0000000..49a482e
> > > > --- /dev/null
> > > > +++ b/Documentation/devicetree/bindings/hwmon/apm-xgene-hwmon.txt
> > > > @@ -0,0 +1,14 @@
> > > > +APM X-Gene hwmon driver
> > > > +
> > > > +Hwmon driver accesses sensors over the "SLIMpro" mailbox.
> > >
> > > DT bindings describe h/w, not driver data.
> > How about this description: "APM X-Gene SOC sensors are accessed over
> > the "SLIMpro" mailbox" ?
> > > I'm not sure this belongs in
> > > DT and perhaps the devices for the mailbox should be created by the
> > > mailbox driver.
> > I don't think the current mailbox supports it.
>
> Then add it. The mailbox binding is really only needed when other h/w
> blocks use a mailbox. As this is purely a firmware interface then the
> mailbox driver can create any devices it needs. The devices don't have
> to be in DT to be created.

Yes, I'll create a function inside mailbox. It allows client request a
channel by mailbox name and index without DT node.

Thanks
Hoan


>
>
> Rob

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