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Message-ID: <YbOh4hZfc+QKA/hO@robh.at.kernel.org>
Date:   Fri, 10 Dec 2021 12:52:18 -0600
From:   Rob Herring <robh@...nel.org>
To:     Biao Huang <biao.huang@...iatek.com>
Cc:     davem@...emloft.net, Jakub Kicinski <kuba@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com,
        srv_heupstream@...iatek.com, macpaul.lin@...iatek.com,
        angelogioacchino.delregno@...labora.com, dkirjanov@...e.de
Subject: Re: [PATCH net-next v8 6/6] net: dt-bindings: dwmac: add support for
 mt8195

On Fri, Dec 10, 2021 at 09:31:29AM +0800, Biao Huang wrote:
> Add binding document for the ethernet on mt8195.
> 
> Signed-off-by: Biao Huang <biao.huang@...iatek.com>
> ---
>  .../bindings/net/mediatek-dwmac.yaml          | 86 +++++++++++++++----
>  1 file changed, 70 insertions(+), 16 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml b/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> index 9207266a6e69..fb04166404d8 100644
> --- a/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> @@ -19,11 +19,67 @@ select:
>        contains:
>          enum:
>            - mediatek,mt2712-gmac
> +          - mediatek,mt8195-gmac
>    required:
>      - compatible
>  
>  allOf:
>    - $ref: "snps,dwmac.yaml#"
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - mediatek,mt2712-gmac
> +
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 5
> +          items:
> +            - description: AXI clock
> +            - description: APB clock
> +            - description: MAC Main clock
> +            - description: PTP clock
> +            - description: RMII reference clock provided by MAC
> +
> +        clock-names:
> +          minItems: 5
> +          items:
> +            - const: axi
> +            - const: apb
> +            - const: mac_main
> +            - const: ptp_ref
> +            - const: rmii_internal
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - mediatek,mt8195-gmac
> +
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 6
> +          items:
> +            - description: AXI clock
> +            - description: APB clock
> +            - description: MAC clock gate

Add new clocks on to the end of existing clocks. That will simplify the 
binding as here you will just need 'minItems: 6'.

> +            - description: MAC Main clock
> +            - description: PTP clock
> +            - description: RMII reference clock provided by MAC
> +
> +        clock-names:
> +          minItems: 6
> +          items:
> +            - const: axi
> +            - const: apb
> +            - const: mac_cg
> +            - const: mac_main
> +            - const: ptp_ref
> +            - const: rmii_internal
>  
>  properties:
>    compatible:
> @@ -32,22 +88,10 @@ properties:
>            - enum:
>                - mediatek,mt2712-gmac
>            - const: snps,dwmac-4.20a
> -
> -  clocks:
> -    items:
> -      - description: AXI clock
> -      - description: APB clock
> -      - description: MAC Main clock
> -      - description: PTP clock
> -      - description: RMII reference clock provided by MAC
> -
> -  clock-names:
> -    items:
> -      - const: axi
> -      - const: apb
> -      - const: mac_main
> -      - const: ptp_ref
> -      - const: rmii_internal
> +      - items:
> +          - enum:
> +              - mediatek,mt8195-gmac
> +          - const: snps,dwmac-5.10a
>  
>    mediatek,pericfg:
>      $ref: /schemas/types.yaml#/definitions/phandle
> @@ -62,6 +106,8 @@ properties:
>        or will round down. Range 0~31*170.
>        For MT2712 RMII/MII interface, Allowed value need to be a multiple of 550,
>        or will round down. Range 0~31*550.
> +      For MT8195 RGMII/RMII/MII interface, Allowed value need to be a multiple of 290,
> +      or will round down. Range 0~31*290.
>  
>    mediatek,rx-delay-ps:
>      description:
> @@ -70,6 +116,8 @@ properties:
>        or will round down. Range 0~31*170.
>        For MT2712 RMII/MII interface, Allowed value need to be a multiple of 550,
>        or will round down. Range 0~31*550.
> +      For MT8195 RGMII/RMII/MII interface, Allowed value need to be a multiple
> +      of 290, or will round down. Range 0~31*290.
>  
>    mediatek,rmii-rxc:
>      type: boolean
> @@ -103,6 +151,12 @@ properties:
>        3. the inside clock, which be sent to MAC, will be inversed in RMII case when
>           the reference clock is from MAC.
>  
> +  mediatek,mac-wol:
> +    type: boolean
> +    description:
> +      If present, indicates that MAC supports WOL(Wake-On-LAN), and MAC WOL will be enabled.
> +      Otherwise, PHY WOL is perferred.
> +
>  required:
>    - compatible
>    - reg
> -- 
> 2.25.1
> 
> 

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