[RFC PATCH] phylib: mdio: handle register/unregister/register sequence

[Florian Fainelli]

Hello Boris,

2013/8/22 Boris BREZILLON <b.brezillon at overkiz.com>:
> Hello,
>
> This patch is a proposal to support the register/unregister/register
> sequence on a given mdio bus.
>
> I use the register/unregister/register sequence to add a fallback when the
> of_mdiobus_register (this function calls mdiobus_register with phy_mask
> set to ~0) does not register any phy device (because the device tree does
> not define any phy).
> In this case I call mdiobus_unregister and then call mdiobus_register with
> a phy_mask set to 0 to trigger a full mdio bus scan.
>
> I'm not sure this is the right way to do it (this is why I added RFC in the
> subject).
>
> Could someone help me figuring out what I should use to implement my fallback ?
>
> 1) use the register/unregister/register sequence
> 2) reimplement the "for (i = 0; i < PHY_MAX_ADDR; i++)" mdiobus_scan loop

I think solution 2 is nicer, in that case, would it be enough in your
case to export a function called mdiobus_scan()? You could call at a
time you know PHY devices have a chance of having been probed?
-- 
Florian