linux-kernel - Re: [PATCH net-next v6 14/17] dt-bindings: net: pse-pd: Add bindings for PD692x0 PSE controller

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Date: Tue, 9 Apr 2024 15:43:45 +0200
From: Kory Maincent <kory.maincent@...tlin.com>
To: Rob Herring <robh@...nel.org>
Cc: "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>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>,
 Oleksij Rempel <o.rempel@...gutronix.de>, Mark Brown <broonie@...nel.org>,
 Frank Rowand <frowand.list@...il.com>, Andrew Lunn <andrew@...n.ch>, Heiner
 Kallweit <hkallweit1@...il.com>, Russell King <linux@...linux.org.uk>,
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
 devicetree@...r.kernel.org, Dent Project <dentproject@...uxfoundation.org>
Subject: Re: [PATCH net-next v6 14/17] dt-bindings: net: pse-pd: Add
 bindings for PD692x0 PSE controller

On Tue, 2 Apr 2024 08:28:34 -0500
Rob Herring <robh@...nel.org> wrote:

> > +    patternProperties:
> > +      "^manager@0[0-9]|1[0-2]$":  
> 
> Unit-addresses are typically in hex.
> 
> Is 'manager' something specific to this device or should be common?

Specific to this device.

> > +        $ref: /schemas/graph.yaml#/properties/ports  
> 
> This is not using the graph binding. Furthermore, I don't want to see 
> new cases of 'port' node names which are not graph nodes. We have it 
> already with ethernet switches, but 'ethernet-port' is preferred over 
> 'port'.

Ok I will remove the ref then.

> Why is this one 'managers' and the other device binding 'channels'?

Here each manager can have up to 8 ports.
The ports in tps23881 are called channels in the datasheet but I can use the
port naming for both if you prefer.

> > +        description:
> > +          PD69208T4/PD69204T4/PD69208M PSE manager exposing 4 or 8 physical
> > +          ports.
> > +
> > +        properties:
> > +          reg:
> > +            description:
> > +              Incremental index of the PSE manager starting from 0, ranging
> > +              from lowest to highest chip select, up to 12.
> > +            maxItems: 1
> > +
> > +        patternProperties:
> > +          '^port@[0-7]$':
> > +            type: object
> > +            required:
> > +              - reg  
> 
> Any property you want is allowed in this node. You are missing 
> 'additionalProperties'.

Indeed.

Regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com