linux-kernel - Re: [PATCH net-next 8/9] dt-bindings: net: pse-pd: Add bindings for PD692x0 PSE controller

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Message-ID: <2332a2e2-740f-49a6-8bef-d90ed010a434@lunn.ch>
Date:   Sat, 18 Nov 2023 18:47:50 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Kory Maincent <kory.maincent@...tlin.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Russ Weight <russ.weight@...ux.dev>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH net-next 8/9] dt-bindings: net: pse-pd: Add bindings for
 PD692x0 PSE controller

> > +  ports-matrix:
> > +    description: Port conversion matrix configuration
> 
> I do not see such property defined anywhere. Your description should
> explain what the purpose is and what it is exactly. Currently you just
> repeat property name, so quite pointless.

I have to agree. You appear to have a device which can supply power to
48 RJ-45 connectors on the front panel? Which probably maps to 48
ports of a Ethernet switch. How do i use these properties described
here to say that eth42 connects to port 42 of the PSE?

> > +    $ref: /schemas/types.yaml#/definitions/uint32-matrix
> > +    minItems: 1
> > +    maxItems: 48
> > +    items:
> > +      items:
> > +        - description: Logical port number
> > +          minimum: 0
> > +          maximum: 47
> > +        - description: Physical port number A (0xff for undefined)
> > +          oneOf:
> > +            - minimum: 0
> > +              maximum: 95
> > +            - const: 0xff
> > +        - description: Physical port number B (0xff for undefined)

It would be good to explain what Port A and B are. It might be obvious
to somebody who knows PSE, but i have no idea...

   Andrew