Re: [PATCH] net: mv643xx_eth: Add missing phy_addr_set in DT mode

From: Sebastian Hesselbarth
Date: Tue Nov 05 2013 - 17:17:47 EST


On 11/05/2013 11:12 PM, Arnaud Ebalard wrote:
Hi Jason,

Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx> writes:

Commit cc9d4598 'net: mv643xx_eth: use of_phy_connect if phy_node
present' made the call to phy_scan optional, if the DT has a link to
the phy node.

However phy_scan has the side effect of calling phy_addr_set, which
writes the phy MDIO address to the ethernet controller. If phy_addr_set
is not called, and the bootloader has not set the correct address then
the driver will fail to function.

Thanks *a lot* for fixing this one! I had the issue on my ReadyNAS 102
(Armada 370 based) which I had put on a todo list and temporarily

Erm, just to make sure: Armada 370 isn't using mv643xx_eth but mvneta,
are you sure it is (was) related to Jason's fix?

Sebastian

workarounded by including a 'ping whatever' call in my u-boot env in
order to force it to do the init. Without it, I was unable to properly
use the interface. With your fix, after multiple reboots to test it,
everything works as expected. So, FWIW:

Tested-by: Arnaud Ebalard <arno@xxxxxxxxxxxx>

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/