[help] PHY driver : Unable to find a PHY (unknown ID?)

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Fri Jan 4 05:18:42 EST 2013

Dear Mylene Josserand,

Good to see some developers from Toulouse using Barebox! I'm close, in

On Fri, 4 Jan 2013 10:09:05 +0100, Mylene Josserand wrote:

> I am using the master branch (maybe I need to checkout a tag ?). The 
> ethernet of my board is a SMSC LAN8700 and the microchip is iMX27.
> I have configured the new source of barebox to use the Phylib and MII 
> drivers. When my barebox starts, I have an error about the PHY driver :

Which board are you targeting?

> The SMSC LAN8700 is here but I can not make it work !
> I have added some prints on the phy.c and the problem is in the fonction 
> "mdiobus_scan" :
> if (!edev->phydev) {
> 	if (addr >= 0) {
> 		dev = mdiobus_scan(bus, addr);
> 		if (!dev) {                     << Failed here
> 			ret = -EIO;
> 			goto fail;
> 		}
> Did I miss something ?

Do you have a correct PHY address in the fec_platform_data structure in
your board file?

Best regards,

Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.

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