Re: [net-next PATCH v3 4/5] net: phy: Introduce fwnode_get_phy_id()

Calvin Johnson
2020-05-11T15:00:19Z

On Mon, May 11, 2020 at 03:04:57PM +0200, Andrew Lunn wrote:
> > NXP's LX2160ARDB platform currently has the following MDIO-PHY connection.
> >
> > MDIO-1 ==> one 40G PHY, two 1G PHYs(C45), two 10G PHYs(C22)
> > MDIO-2 ==> one 25G PHY
>
> It has been suggested that ACPI only support a one to one
> mapping. Each MAC has one MDIO bus, with one PHY on it. KISS.
>
> This clearly does not work for your hardware. So not only do we need
> to solve how PHY properties are described, we also need an equivalent
> of phy-handle, so a MAC can indicate which PHY it is connected to.
>

Right. I had introduced fwnode_get_phy_node() to take care of phy-handle.

> So in effect, you seem to be heading towards a pretty full
> reproduction of the DT binding. Before you go too much further and
> waste too much of your time, you might want confirmation from the ACPI
> people this is not too advanced for what ACPI can do and they tell you
> to forget ACPI for this hardware and stick with DT.

I've copied the patchset to Rafael and acpi ML.
Waiting for their response.

Thanks
Calvin