netdev - Re: C45 support and mdiobus

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Date:   Thu, 9 Aug 2018 17:25:02 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Jose Abreu <Jose.Abreu@...opsys.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: C45 support and mdiobus_scan

> > The PCIe core will look in the device tree and when it creates the
> > platform device for the i210 on the pcie bus, it points
> > pdev->dev.of_node at this node. So long as you are using a platform
> > with DT, you can do this. I hope you are not using x86..
> 
> Yes I am :( Any possible solution for this?

Well, DT can be used with x86. I think Edison did that. But i assume
your PCIe host is in ACPI, not DT. So getting this linking working
will not be easy.

There has been some work to add an ACPI binding for PHYs. I don't know
if it actually got far enough that you can hack your DSDT to add a
PHY. But i'm sure it did not get far enough that you can describe an
MDIO bus in DSDT, so it probably is not going to help you.

> I guess in ultimate case I will have to switch to ARM based setup.

Yes, or MIPS.

     Andrew