linux-kernel - Re: [PATCH 6/6] dt-bindings: cpufreq: enhance Mediatek cpufreq dt-binding document

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Message-ID: <1494226711.9662.22.camel@mtkswgap22>
Date:   Mon, 8 May 2017 14:58:31 +0800
From:   Sean Wang <sean.wang@...iatek.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
CC:     <rjw@...ysocki.net>, <robh+dt@...nel.org>,
        <matthias.bgg@...il.com>, <mark.rutland@....com>,
        <mturquette@...libre.com>, <jamesjj.liao@...iatek.com>,
        <p.zabel@...gutronix.de>, <shunli.wang@...iatek.com>,
        <erin.lo@...iatek.com>, <jdelvare@...e.de>,
        <devicetree@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <linux-pm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/6] dt-bindings: cpufreq: enhance Mediatek cpufreq
 dt-binding document

On Mon, 2017-05-08 at 09:50 +0530, Viresh Kumar wrote:
> On 05-05-17, 23:26, sean.wang@...iatek.com wrote:
> > From: Sean Wang <sean.wang@...iatek.com>
> > 
> > Update binding document to reflect the lastest driver logic and
> 
> The bindings don't follow the drivers but its the other way around. Don't
> mention anything about the drivers in the bindings patches.


Okay. I made a mistake: DT bindings shouldn't reference drivers and they
are OS-agnostic. I will correct them with the principle. 

Thanks for your patience and guidance 


> > add more examples guiding people how to use Mediatek cpufreq driver.
> > 
> > Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> > ---
> >  .../bindings/cpufreq/cpufreq-mediatek.txt          | 170 ++++++++++++++++++++-
> >  1 file changed, 167 insertions(+), 3 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt
> > index 52b457c..0703927 100644
> > --- a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt
> > +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt
> > @@ -1,4 +1,5 @@
> > -Device Tree Clock bindins for CPU DVFS of Mediatek MT8173 SoC
> > +Binding for Mediatek's CPUFreq driver
> > +=====================================
> >  
> >  Required properties:
> >  - clocks: A list of phandle + clock-specifier pairs for the clocks listed in clock names.
> > @@ -9,6 +10,8 @@ Required properties:
> >  			  transition and not stable yet.
> >  	Please refer to Documentation/devicetree/bindings/clk/clock-bindings.txt for
> >  	generic clock consumer properties.
> > +- operating-points-v2: Pleaser refer to Documentation/devicetree/bindings/opp/opp.txt
> > +	for detail.
> >  - proc-supply: Regulator for Vproc of CPU cluster.
> >  
> >  Optional properties:
> > @@ -17,9 +20,166 @@ Optional properties:
> >  	       Vsram to fit SoC specific needs. When absent, the voltage scaling
> >  	       flow is handled by hardware, hence no software "voltage tracking" is
> >  	       needed.
> > +- #cooling-cells:
> > +- cooling-min-level:
> > +- cooling-max-level:
> > +	Please refer to Documentation/devicetree/bindings/thermal/thermal.txt
> > +	for detail.
> > +
> > +Example 1 (MT7623 SoC):
> > +
> > +	cpu_opp_table: opp_table {
> > +		compatible = "operating-points-v2";
> > +		opp-shared;
> > +
> > +		opp@...000000 {
> 
> s/opp@...p-/

I have referred to other dt-binding as examples where they also use opp@
as the prefix word.  e.g bindings/cpufreq/ti-cpufreq.txt did it.

Or I misunderstand something you pointed out here ?












>