linux-kernel - Re: [PATCH 02/14] dt-bindings: opp: Increase maxItems for opp-hz property

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Date:   Mon, 17 Jul 2023 12:30:56 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Rob Herring <robh@...nel.org>
Cc:     vireshk@...nel.org, nm@...com, sboyd@...nel.org,
        myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
        cw00.choi@...sung.com, andersson@...nel.org,
        konrad.dybcio@...aro.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, quic_asutoshd@...cinc.com,
        quic_cang@...cinc.com, quic_nitirawa@...cinc.com,
        quic_narepall@...cinc.com, quic_bhaskarv@...cinc.com,
        quic_richardp@...cinc.com, quic_nguyenb@...cinc.com,
        quic_ziqichen@...cinc.com, bmasney@...hat.com,
        krzysztof.kozlowski@...aro.org
Subject: Re: [PATCH 02/14] dt-bindings: opp: Increase maxItems for opp-hz
 property

On Fri, Jul 14, 2023 at 10:17:33AM -0600, Rob Herring wrote:
> On Wed, Jul 12, 2023 at 04:01:57PM +0530, Manivannan Sadhasivam wrote:
> > Current limit of 16 will be exhausted by platforms specifying the frequency
> > for 9 clocks using opp-hz, like Qcom SDM845 SoC: 9 * 2 (64 bits) = 18
> 
> Are you sure about that? opp-hz is defined as uint64-matrix, so 16 
> 64-bit entries should already be allowed. It doesn't matter how the .dts 
> is encoded (it used to though).
> 

Yes, 16 64bit entries are allowed, but SDM845 will add 18 entries (due to 9
clocks) and hence this patch.

Did I miss anything?

- Mani

> > 
> > So let's increase the limit to 32 which should be enough for most platforms
> > (hopefully).
> > 
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > ---
> >  Documentation/devicetree/bindings/opp/opp-v2-base.yaml | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/opp/opp-v2-base.yaml b/Documentation/devicetree/bindings/opp/opp-v2-base.yaml
> > index 47e6f36b7637..e2f8f7af3cf4 100644
> > --- a/Documentation/devicetree/bindings/opp/opp-v2-base.yaml
> > +++ b/Documentation/devicetree/bindings/opp/opp-v2-base.yaml
> > @@ -56,7 +56,7 @@ patternProperties:
> >            need to be configured and that is left for the implementation
> >            specific binding.
> >          minItems: 1
> > -        maxItems: 16
> > +        maxItems: 32
> >          items:
> >            maxItems: 1
> >  
> > -- 
> > 2.25.1
> > 

-- 
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