> -----Original Message-----
> From: Florian Fainelli [mailto:[email protected]]
> Sent: Tuesday, February 21, 2017 6:31 AM
> To: YUAN Linyu; David S . Miller; Andrew Lunn
> Cc: [email protected]; [email protected]
> Subject: Re: create drivers/net/mdio and move mdio drivers into it
>
>
>
> On 02/19/2017 10:29 PM, YUAN Linyu wrote:
> >
> >
> >> -----Original Message-----
> >> From: Florian Fainelli [mailto:[email protected]]
> >> Sent: Monday, February 20, 2017 1:42 PM
> >> To: YUAN Linyu; David S . Miller; Andrew Lunn
> >> Cc: [email protected]; [email protected]
> >> Subject: Re: create drivers/net/mdio and move mdio drivers into it
> >>> 4. support mdio auto probe phy device.
> >>
> >> That's already the case, even in a Device Tree enabled system if you
> >> omit to provide a "reg" property for child nodes, the bus is
> >> automatically scanned.
> >>
> > I check of_mdiobus_registe() which not do auto scan.
> > Which function should I refer?
>
> of_mdiobus_register() does this:
>
> /* Loop over the child nodes and register a phy_device for each
> phy */
> for_each_available_child_of_node(np, child) {
> addr = of_mdio_parse_addr(&mdio->dev, child);
> if (addr < 0) {
> scanphys = true;
> continue;
> }
>
> if (of_mdiobus_child_is_phy(child))
> of_mdiobus_register_phy(mdio, child, addr);
> else
> of_mdiobus_register_device(mdio, child, addr);
> }
>
> if (!scanphys)
> return 0;
>
> It does continue with scanning the PHY child nodes which don't have a
> correct "reg" property set here.
>From this code, it parse sub-node of mdio node.
mdio@fc000 {
rgmii_phy1: ethernet-phy@1 {
};
};
But I think we can auto detect the phy even if there is no sub-node of mdio
node.
mdio@fc000 {
};
> --
> Florian
