linux-kernel - RE: [PATCH v3 2/3] dt-bindings: remoteproc: qcom: Add SC7280 WPSS support

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Message-ID: <000b01d7af6f$2be09c50$83a1d4f0$@codeaurora.org>
Date:   Wed, 22 Sep 2021 10:33:17 +0530
From:   <pillair@...eaurora.org>
To:     "'Bjorn Andersson'" <bjorn.andersson@...aro.org>,
        "'Stephen Boyd'" <swboyd@...omium.org>
Cc:     <agross@...nel.org>, <mathieu.poirier@...aro.org>,
        <ohad@...ery.com>, <p.zabel@...gutronix.de>, <robh+dt@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <sibis@...eaurora.org>,
        <mpubbise@...eaurora.org>, <kuabhs@...omium.org>
Subject: RE: [PATCH v3 2/3] dt-bindings: remoteproc: qcom: Add SC7280 WPSS support



> -----Original Message-----
> From: Bjorn Andersson <bjorn.andersson@...aro.org>
> Sent: Wednesday, September 22, 2021 5:08 AM
> To: Stephen Boyd <swboyd@...omium.org>
> Cc: Rakesh Pillai <pillair@...eaurora.org>; agross@...nel.org;
> mathieu.poirier@...aro.org; ohad@...ery.com; p.zabel@...gutronix.de;
> robh+dt@...nel.org; linux-arm-msm@...r.kernel.org;
> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org;
> sibis@...eaurora.org; mpubbise@...eaurora.org; kuabhs@...omium.org
> Subject: Re: [PATCH v3 2/3] dt-bindings: remoteproc: qcom: Add SC7280
> WPSS support
> 
> On Thu 16 Sep 23:25 PDT 2021, Stephen Boyd wrote:
> 
> > Quoting Rakesh Pillai (2021-09-16 09:55:52)
> > > @@ -78,6 +84,10 @@ properties:
> > >        Phandle reference to a syscon representing TCSR followed by the
> > >        three offsets within syscon for q6, modem and nc halt
registers.
> > >
> > > +  qcom,qmp:
> > > +    $ref: /schemas/types.yaml#/definitions/phandle
> > > +    description: Reference to the AOSS side-channel message RAM.
> > > +
> > >    qcom,smem-states:
> > >      $ref: /schemas/types.yaml#/definitions/phandle-array
> > >      description: States used by the AP to signal the Hexagon core
> > > @@ -117,6 +127,33 @@ allOf:
> > >          compatible:
> > >            contains:
> > >              enum:
> > > +              - qcom,sc7280-wpss-pil
> > > +    then:
> >
> > Honestly I find this if/else to be a huge tangle. Why not split the
> > binding so that each compatible is a different file? Then it is easier
> > to read and see what properties to set.
> >
> 
> Further more, the way we express the non-PAS properties in the PAS node
> in the dtsi and then switch the compatible in the non-PAS devices means
that
> we're causing validation errors.
> 
> So we should explode this binding to get rid of the conditionals and to
> describe the "superset" of the PAS and non-PAS compatibles, for platforms
> where this is applicable.
> 
> Regards,
> Bjorn

Hi Bjorn,

I have posted v4 for this patchseries with wpss dt-bindings added as a
separate file.
Can you please check v4 ?

Thanks,
Rakesh Pillai.


> 
> > > +      properties:
> > > +        interrupts-extended:
> > > +          maxItems: 6
> > > +          items:
> > > +            - description: Watchdog interrupt
> > > +            - description: Fatal interrupt
> > > +            - description: Ready interrupt