[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <5761bdc3-7224-4de6-b0f5-bedc066c09f6@lunn.ch>
Date: Wed, 23 Oct 2024 19:08:57 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [net-next RFC PATCH v2 1/3] dt-bindings: net: dsa: Add Airoha
AN8855 Gigabit Switch documentation
> + airoha,base_smi_address:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description:
> + Configure and change the base switch PHY address to a new address on
> + the bus.
> + On reset, the switch PHY address is ALWAYS 1.
> + default: 1
> + maximum: 31
Given that this is a 5 port switch, what happens if i pick a value
greater than 31 - 5 ?
Do you have a real use case for this? A board which requires the PHYs
get shifted from the default of 1? Vendors have all sorts of bells and
whistles which we never use. If its not needed, i would not add it,
until it is actually needed, if ever.
> + mdio:
> + $ref: /schemas/net/mdio.yaml#
> + unevaluatedProperties: false
> + description:
> + Define the relative address of the internal PHY for each port.
> +
> + Each reg for the PHY is relative to the switch base PHY address.
Which is not the usual meaning of reg.
> + mdio {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + internal_phy0: phy@0 {
> + reg = <0>;
So given that airoha,base_smi_address defaults to 1, this is actually
address 1 on the MDIO bus?
Andrew
Powered by blists - more mailing lists