netdev - Re: [RFC PATCH net-next 13/13] dt-bindings: net: dsa: Add documentation for NXP SJA1105 driver

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Message-ID: <cb78c8b7-8ea1-de40-da5f-f9e9259f72de@gmail.com>
Date:   Mon, 25 Mar 2019 19:24:51 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>, davem@...emloft.net,
        netdev@...r.kernel.org
Cc:     andrew@...n.ch, vivien.didelot@...il.com, linus.walleij@...aro.org
Subject: Re: [RFC PATCH net-next 13/13] dt-bindings: net: dsa: Add
 documentation for NXP SJA1105 driver



On 3/23/2019 8:23 PM, Vladimir Oltean wrote:
> Signed-off-by: Vladimir Oltean <olteanv@...il.com>
> ---
>  .../devicetree/bindings/net/dsa/sja1105.txt   | 123 ++++++++++++++++++
>  1 file changed, 123 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/dsa/sja1105.txt
> 
> diff --git a/Documentation/devicetree/bindings/net/dsa/sja1105.txt b/Documentation/devicetree/bindings/net/dsa/sja1105.txt
> new file mode 100644
> index 000000000000..2c82b6fc37e3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/dsa/sja1105.txt
> @@ -0,0 +1,123 @@
> +NXP SJA1105 switch driver
> +=========================
> +
> +Required properties:
> +
> +- compatible: Must be "nxp,sja1105". Device ID identification (one of
> +  E/T/P/Q/R/S) is performed by driver at probe time. Swapping pin-compatible
> +  parts is possible with no DTS change.
> +
> +Optional properties:
> +
> +- sja1105,mac-mode, sja1105,phy-mode: Boolean properties that can be assigned
> +  under each port node that is MII or RMII (has no effect for RGMII).  By
> +  default (unless otherwise specified) a port is configured as MAC if it is
> +  driving a PHY (phy-handle is present) or as PHY if it is PHY-less (fixed-link
> +  specified, presumably because it is connected to a MAC).  These properties
> +  are required in the case where SJA1105 ports are at both ends of an MII/RMII
> +  PHY-less setup. One end would need to have sja1105,mac-mode, while the other
> +  sja1105,phy-mode.

Typically we would be using a fixed-link with an appropriate 'phy-mode'
property to describe a MAC to MAC connection, this may be seen as a
re-purposing PHY-oriented properties though, so I am fine with that binding:

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian