netdev - Re: [PATCH] net: dsa: microchip: look for phy-mode in port nodes

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Message-ID: <20200714222716.GP1078057@lunn.ch>
Date:   Wed, 15 Jul 2020 00:27:16 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Helmut Grohne <helmut.grohne@...enta.de>
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Woojung Huh <woojung.huh@...rochip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH] net: dsa: microchip: look for phy-mode in port nodes

On Tue, Jul 14, 2020 at 02:08:28PM +0200, Helmut Grohne wrote:
> Documentation/devicetree/bindings/net/dsa/dsa.txt says that the phy-mode
> property should be specified on port nodes. However, the microchip
> drivers read it from the switch node.
> 
> Let the driver use the per-port property and fall back to the old
> location with a warning.
> 
> Fix in-tree users.

Hi Helmut

I think this change is more complex than it needs to be. Only the CPU
port supports different interface modes. So i don't see the need to
handle both dev->interface and p->interface. Just first search
ksz_switch_register() first look in the cpu port node, and if not
found go back to the old location. The rest of the code can stay the
same.

	Andrew