netdev - Re: [PATCH net-next v3 1/5] dt-bindings: net: Add Motorcomm yt8xxx ethernet phy

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Date:   Tue, 31 Jan 2023 11:19:33 +0800
From:   "Frank.Sae" <Frank.Sae@...or-comm.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Peter Geis <pgwipeout@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        yanhong.wang@...rfivetech.com, xiaogang.fan@...or-comm.com,
        fei.zhang@...or-comm.com, hua.sun@...or-comm.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH net-next v3 1/5] dt-bindings: net: Add Motorcomm yt8xxx
 ethernet phy

Hi Rob,

On 2023/1/31 06:41, Rob Herring wrote:
> On Mon, Jan 30, 2023 at 02:35:35PM +0800, Frank Sae wrote:
>>  Add a YAML binding document for the Motorcom yt8xxx Ethernet phy driver.
> 
> Bindings are for h/w devices, not drivers.
> 
>>  
>> Signed-off-by: Frank Sae <Frank.Sae@...or-comm.com>
>> ---
>>  .../bindings/net/motorcomm,yt8xxx.yaml        | 102 ++++++++++++++++++
>>  .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
>>  MAINTAINERS                                   |   1 +
>>  3 files changed, 105 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
>> new file mode 100644
>> index 000000000000..8527576c15b3
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
>> @@ -0,0 +1,102 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/net/motorcomm,yt8xxx.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: MotorComm yt8xxx Ethernet PHY
>> +
>> +maintainers:
>> +  - frank sae <frank.sae@...or-comm.com>
>> +
>> +allOf:
>> +  - $ref: ethernet-phy.yaml#
> 
> This schema doesn't work because there is no way to determine whether to 
> apply it or not. You need a compatible for your phy.
> 

 I don't understand how to add a compatible for my phy.

compatible:
    oneOf:
      - enum:
          - fsl,imx25-fec
          - fsl,imx27-fec

compatible usually like this, but it is usually for mac or mdio.


phy id list:
YT8511	0x0000010a
YT8521	0x0000011A
YT8531  0x4f51e91b

motorcomm,yt8xxx.yaml

    mdio0 {
        ...
        ethernet-phy@5 {
            compatible = "ethernet-phy-id0000.010a",
                         "ethernet-phy-id0000.011a",
                         "ethernet-phy-id4f51.e91b",
                         "ethernet-phy-ieee802.3-c22";
            reg = <5>;
            ...
        };
    };

 Should i add compatible like this ? 
 If above is error, please give me an example, thanks!

> Rob