linux-kernel - Re: [PATCH 1/1] dt-bindings: net: snps,dwmac: Document queue config subnodes

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Message-ID: <20221024185312.GA2037160-robh@kernel.org>
Date:   Mon, 24 Oct 2022 13:53:12 -0500
From:   Rob Herring <robh@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Sebastian Reichel <sebastian.reichel@...labora.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Jose Abreu <joabreu@...opsys.com>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com
Subject: Re: [PATCH 1/1] dt-bindings: net: snps,dwmac: Document queue config
 subnodes

On Sat, Oct 22, 2022 at 12:05:15PM -0400, Krzysztof Kozlowski wrote:
> On 21/10/2022 13:10, Sebastian Reichel wrote:
> > The queue configuration is referenced by snps,mtl-rx-config and
> > snps,mtl-tx-config. Most in-tree DTs put the referenced object
> > as child node of the dwmac node.
> > 
> > This adds proper description for this setup, which has the
> > advantage of properly making sure only known properties are
> > used.
> > 
> > Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> > ---
> >  .../devicetree/bindings/net/snps,dwmac.yaml   | 154 ++++++++++++------
> >  1 file changed, 108 insertions(+), 46 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > index 13b984076af5..0bf6112cec2f 100644
> > --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > @@ -167,56 +167,118 @@ properties:
> >    snps,mtl-rx-config:
> >      $ref: /schemas/types.yaml#/definitions/phandle
> >      description:
> > -      Multiple RX Queues parameters. Phandle to a node that can
> > -      contain the following properties
> > -        * snps,rx-queues-to-use, number of RX queues to be used in the
> > -          driver
> > -        * Choose one of these RX scheduling algorithms
> > -          * snps,rx-sched-sp, Strict priority
> > -          * snps,rx-sched-wsp, Weighted Strict priority
> > -        * For each RX queue
> > -          * Choose one of these modes
> > -            * snps,dcb-algorithm, Queue to be enabled as DCB
> > -            * snps,avb-algorithm, Queue to be enabled as AVB
> > -          * snps,map-to-dma-channel, Channel to map
> > -          * Specifiy specific packet routing
> > -            * snps,route-avcp, AV Untagged Control packets
> > -            * snps,route-ptp, PTP Packets
> > -            * snps,route-dcbcp, DCB Control Packets
> > -            * snps,route-up, Untagged Packets
> > -            * snps,route-multi-broad, Multicast & Broadcast Packets
> > -          * snps,priority, bitmask of the tagged frames priorities assigned to
> > -            the queue
> > +      Multiple RX Queues parameters. Phandle to a node that
> > +      implements the 'rx-queues-config' object described in
> > +      this binding.
> > +
> > +  rx-queues-config:
> 
> If this field is specific to this device, then you need vendor prefix:
> snps,rq-queues-config

Not for a node name...

Rob