linux-kernel - Re: [RFC PATCH net-next 1/4] dt-bindings: net: Add tx and rx internal delays

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Date:   Thu, 21 May 2020 11:06:23 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Dan Murphy <dmurphy@...com>, andrew@...n.ch, hkallweit1@...il.com,
        davem@...emloft.net, robh@...nel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [RFC PATCH net-next 1/4] dt-bindings: net: Add tx and rx internal
 delays



On 5/21/2020 10:48 AM, Dan Murphy wrote:
> tx-internal-delays and rx-internal-delays are a common setting for RGMII
> capable devices.
> 
> These properties are used when the phy-mode or phy-controller is set to
> rgmii-id, rgmii-rxid or rgmii-txid.  These modes indicate to the
> controller that the PHY will add the internal delay for the connection.
> 
> Signed-off-by: Dan Murphy <dmurphy@...com>
> ---
>  .../bindings/net/ethernet-controller.yaml          | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/ethernet-controller.yaml b/Documentation/devicetree/bindings/net/ethernet-controller.yaml
> index ac471b60ed6a..3f25066c339c 100644
> --- a/Documentation/devicetree/bindings/net/ethernet-controller.yaml
> +++ b/Documentation/devicetree/bindings/net/ethernet-controller.yaml
> @@ -143,6 +143,20 @@ properties:
>        Specifies the PHY management type. If auto is set and fixed-link
>        is not specified, it uses MDIO for management.
>  
> +  rx-internal-delay:

Please name this 'rx-internal-delay-ps'

> +    $ref: /schemas/types.yaml#definitions/uint32
> +    description: |
> +      RGMII Receive PHY Clock Delay defined in pico seconds.  This is used for
> +      PHY's that have configurable RX internal delays.  This property is only
> +      used when the phy-mode or phy-connection-type is rgmii-id or rgmii-rxid.
> +
> +  tx-internal-delay:

Likewise

> +    $ref: /schemas/types.yaml#definitions/uint32
> +    description: |
> +      RGMII Transmit PHY Clock Delay defined in pico seconds.  This is used for
> +      PHY's that have configurable TX internal delays.  This property is only
> +      used when the phy-mode or phy-connection-type is rgmii-id or rgmii-txid.
> +
>    fixed-link:
>      allOf:
>        - if:
> 

-- 
Florian