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Date:   Thu, 18 Aug 2022 09:33:44 +0800
From:   Shawn Guo <shawnguo@kernel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc:     Wei Fang <wei.fang@nxp.com>, davem@davemloft.net,
        edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
        robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        s.hauer@pengutronix.de, netdev@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
        peng.fan@nxp.com, ping.bai@nxp.com, sudeep.holla@arm.com,
        linux-arm-kernel@lists.infradead.org, aisheng.dong@nxp.com
Subject: Re: [PATCH 1/3] dt-bings: net: fsl,fec: update compatible item
Message-ID: <20220818013344.GE149610@dragon>
References: <20220704101056.24821-1-wei.fang@nxp.com>
 <20220704101056.24821-2-wei.fang@nxp.com>
 <ef7e501a-b351-77f9-c4f7-74ab10283ed6@linaro.org>
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On Mon, Jul 04, 2022 at 11:12:09AM +0200, Krzysztof Kozlowski wrote:
> > diff --git a/Documentation/devicetree/bindings/net/fsl,fec.yaml b/Documentation/devicetree/bindings/net/fsl,fec.yaml
> > index daa2f79a294f..6642c246951b 100644
> > --- a/Documentation/devicetree/bindings/net/fsl,fec.yaml
> > +++ b/Documentation/devicetree/bindings/net/fsl,fec.yaml
> > @@ -40,6 +40,10 @@ properties:
> >            - enum:
> >                - fsl,imx7d-fec
> >            - const: fsl,imx6sx-fec
> > +      - items:
> > +          - enum:
> > +              - fsl,imx8ulp-fec
> > +          - const: fsl,imx6ul-fec
> 
> This is wrong.  fsl,imx6ul-fec has to be followed by fsl,imx6q-fec. I
> think someone made similar mistakes earlier so this is a mess.

Hmm, not sure I follow this.  Supposing we want to have the following
compatible for i.MX8ULP FEC, why do we have to have "fsl,imx6q-fec"
here?

	fec: ethernet@29950000 {
		compatible = "fsl,imx8ulp-fec", "fsl,imx6ul-fec";
		...
	};

Shawn

> 
> >        - items:
> >            - const: fsl,imx8mq-fec
> >            - const: fsl,imx6sx-fec