linux-kernel - Re: [PATCH v3 1/2] dt-bindings: arm: cpus: Document 'qcom,freq-domain' property

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Message-ID: <20201021095916.GA3334@Mani-XPS-13-9360>
Date:   Wed, 21 Oct 2020 15:29:16 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Hector Yuan <hector.yuan@...iatek.com>
Cc:     rjw@...ysocki.net, viresh.kumar@...aro.org, robh+dt@...nel.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, bjorn.andersson@...aro.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v3 1/2] dt-bindings: arm: cpus: Document
 'qcom,freq-domain' property

Hi,

On Wed, Oct 21, 2020 at 10:36:43AM +0800, Hector Yuan wrote:
> Hi, Manivannan
> 
> On Tue, 2020-10-20 at 21:09 +0530, Manivannan Sadhasivam wrote:
> > Add devicetree documentation for 'qcom,freq-domain' property specific
> > to Qualcomm CPUs. This property is used to reference the CPUFREQ node
> > along with Domain ID (0/1).
> > 
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > ---
> >  Documentation/devicetree/bindings/arm/cpus.yaml | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml
> > index 1222bf1831fa..f40564bf004f 100644
> > --- a/Documentation/devicetree/bindings/arm/cpus.yaml
> > +++ b/Documentation/devicetree/bindings/arm/cpus.yaml
> > @@ -290,6 +290,12 @@ properties:
> >  
> >        * arm/msm/qcom,kpss-acc.txt
> >  
> > +  qcom,freq-domain:
> Do you mind to change "qcom, freq-domain" to common naming? or drop the
> prefix. So that we can use this CPU node and map it to each freq-domain.
> Thanks a lot. 

I can do that but did the domain value match for other platforms as well?

Thanks,
Mani

> 
> > +    $ref: '/schemas/types.yaml#/definitions/phandle-array'
> > +    description: |
> > +      CPUs supporting freq-domain must set their "qcom,freq-domain" property
> > +      with phandle to a cpufreq_hw node followed by the Domain ID(0/1).
> > +
> >    rockchip,pmu:
> >      $ref: '/schemas/types.yaml#/definitions/phandle'
> >      description: |
>