netdev - Re: [RFC PATCH net-next 0/2] DT MDIO bus of fixed phys

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Date:	Sat, 12 Mar 2016 01:12:24 +0100
From:	Andrew Lunn <andrew@...n.ch>
To:	Florian Fainelli <f.fainelli@...il.com>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: [RFC PATCH net-next 0/2] DT MDIO bus of fixed phys

> >> Humm, if that's the problem we want to solve, we could introduce a
> >> helper function which tries to locate the phy using a 'phy-handle'
> >> property
> > 
> > I don't follow you. Where do you get a phandle from to use with
> > phy-handle?
> 
> >From the caller of the function: the consumer of that phy-handle and/or
> fixed-link property which is either an Ethernet MAC driver or a DSA's
> switch port node.

I still don't get it. Lets take a real example. I currently have this
in one of my dts files:

&fec1 {
       phy-mode = "rmii";
       pinctrl-names = "default";
       pinctrl-0 = <&pinctrl_fec1>;
       status = "okay";

       fixed-link {
                  speed = <100>;
                  full-duplex;
       };
};

and we now want to use a phy-handle:

&fec1 {
       phy-mode = "rmii";
       pinctrl-names = "default";
       pinctrl-0 = <&pinctrl_fec1>;
       status = "okay";

       phy-handle = <XZY>;
};

What do i use as XZY, so that it somehow resolves to a fixed-phy?

Thanks
	Andrew