linux-kernel - Re: [PATCH v4 1/3] dt-bindings: thermal: Add binding document for SR thermal

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Date:   Thu, 27 Sep 2018 13:59:43 -0500
From:   Rob Herring <robh@...nel.org>
To:     Scott Branden <scott.branden@...adcom.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Srinath Mannam <srinath.mannam@...adcom.com>,
        daniel.lezcano@...aro.org, Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        Pramod Kumar <pramod.kumar@...adcom.com>
Subject: Re: [PATCH v4 1/3] dt-bindings: thermal: Add binding document for SR
 thermal

On Thu, Sep 27, 2018 at 11:00:33AM -0700, Scott Branden wrote:
> 
> 
> On 18-09-27 10:31 AM, Florian Fainelli wrote:
> > On 09/27/2018 10:27 AM, Rob Herring wrote:
> > > On Thu, Sep 27, 2018 at 09:06:41PM +0530, Srinath Mannam wrote:
> > > > From: Pramod Kumar <pramod.kumar@...adcom.com>
> > > > 
> > > > Add binding document for supported thermal implementation
> > > > in Stingray.
> > > > 
> > > > Signed-off-by: Pramod Kumar <pramod.kumar@...adcom.com>
> > > > Signed-off-by: Srinath Mannam <srinath.mannam@...adcom.com>
> > > > Reviewed-by: Ray Jui <ray.jui@...adcom.com>
> > > > Reviewed-by: Scott Branden <scott.branden@...adcom.com>
> > > > ---
> > > >   .../bindings/thermal/brcm,sr-thermal.txt           | 25 ++++++++++++++++++++++
> > > >   1 file changed, 25 insertions(+)
> > > >   create mode 100644 Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
> > > > 
> > > > diff --git a/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt b/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
> > > > new file mode 100644
> > > > index 0000000..717617b
> > > > --- /dev/null
> > > > +++ b/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
> > > > @@ -0,0 +1,25 @@
> > > > +* Broadcom Stingray Thermal
> > > > +
> > > > +This binding describes thermal sensors that is part of Stingray SoCs.
> > > > +
> > > > +Required properties:
> > > > +- compatible : Must be "brcm,sr-thermal"
> > > > +- reg : memory where tmon data will be available.
> > > > +- brcm,tmon-mask: A one cell bit mask of valid TMON sources.
> > > > +                  Each bit represents single TMON source.
> > > > +- brcm,max-crit-temp: Maximum supported critical temperature.
> > > We already have a defined binding for setting trip points.
> > Indeed, and if you have multiple TMONs, they would in premise possibly
> > each have a different critical trip point.
> Which may be a good reason to go back to our original bindings which were
> generic and had each sensor in its own node?

Perhaps. I wouldn't call it going back to your original, but rather 
defining a complete binding. Of course, if you don't need different trip 
points, then again that is just unnecessary bloat. But I can't argue 
whether you do or don't.

Rob