Re: [PATCH v2 2/3] netdev/of/phy: Add MDIO bus multiplexer support.

[David Daney]

On 09/28/2011 12:25 AM, MichaÅ MirosÅaw wrote:
> 2011/9/28 David Daney<david.daney@xxxxxxxxxx>:
> [...]
> > +Example :
> > +
> > +       /* The parent MDIO bus. */
> > +       smi1: mdio@1180000001900 {
> > +               compatible = "cavium,octeon-3860-mdio";
> > +               #address-cells =<1>;
> > +               #size-cells =<0>;
> > +               reg =<0x11800 0x00001900 0x0 0x40>;
> > +       };
> > +
> > +       /*
> > +          An NXP sn74cbtlv3253 dual 1-of-4 switch controlled by a
> > +          pair of GPIO lines.  Child busses 2 and 3 populated with 4
> > +          PHYs each.
> > +        */
> > +       mdio-mux {
> > +               compatible = "cavium,mdio-mux-sn74cbtlv3253", "cavium,mdio-mux";
> > +               gpios =<&gpio1 3 0>,<&gpio1 4 0>;
> > +               mdio-parent-bus =<&smi1>;
> > +               #address-cells =<1>;
> > +               #size-cells =<0>;
>
> This should probably have 'compatible = "nxp,sn74cbtlv3253";' here.

No, the sn74cbtlv3253 is a general purpose part that could be used to 
multiplex anything (I2C, SPI, random analog signals, etc.).  Only when 
it is in the "cavium,mdio-mux-sn74cbtlv3253" configuration is it an MDIO 
bus multiplexer.

David Daney.
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